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Re: P0325 Knock Sensor Diagnosis - EricTheCarGuy
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- Опубликовано: 6 май 2012
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Some great points were brought up in the comments of the original video including that I was not using my meter to check the resistance of the circuit correctly when I did the resistance check on the knock sensor therefore I HAD to make this video covering that mistake along with video of doing the test properly and how to set the multimeter. I also take the opportunity to show the different settings on a DVOM and how to use them so I think this video stands on it's own just for that purpose.
Here's a link to the original video.
• P0325 Knock Sensor Dia...
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Your videos are great. You don't skip your mistakes and at the same time show your viewers how to find and fix them. I'm grateful for the content you make. As someone who wants to learn, I look for these kinds of videos. Thank you for your honesty.
i went into a mechanic shop and i over heard these guys talking about eric the car guy.so i jumped in and said yeah i've seen all his vids.so we all were talking about you man.everyone loves your vid dude.your gonna be a celeb.keep it up.
This old electronic tech watched the previous one and caught that you were using the continuity range, rather than a higher range to test for high resistance. Glad you caught that and did this video. But another thing: the sensors are supposed to put out a certain voltage, in the millivolt range, depending on the frequency of the knock. It's often proportional to the frequency, unless you're using a flat-response sensor, like a Delphi. Their info on that is here: www.delphi.com/manufacturers/auto/sensors/engine-and-transmission/diesel-and-gasoline/flat-response-knock - and you'll see that it's pretty flat, putting out (spec.) about 27mV at mid-range of 9kHz. What you could've done with the old sensor is put your DVOM on a low AC volts scale, clip your leads as before (one to the ground, other to the sensor connector) and then tap on the block with a wrench to see if it put out any voltage. A DVOM with a peak hold feature makes it easier to see what the peak voltage was. If you're not getting something, hopefully close to what the Delphi sensor spec is, then you know it's the sensor - and not the wiring, as is sometimes the case. IF you DO get a few millivolts - even something low - then you'd want to go downstream of the sensor with the connector back on it, all the way to the ECU if necessary, and do the same to see if the wiring is bad. In the "olden days" we'd check the entire circuit, then divide the circuit in half, check again, then in half again until we found the section that was bad if there was one (or more) connectors in between the component being measured and where the signal was supposed to be coming out.
Eric, one of the first two things I learned about selectable range multimeters is always test with the highest range possible first, and dial down from there. The second was never change ranges while under load.
Great follow-up on this issue, Eric. I find your hands-on practical videos very helpful. Keep producing them!
good for you Eric. Isn't it nice to have a few thousand people checking your work.
Hey thanks for all your videos! Quick little useless correction: piezo crystals produce electricity from pressure, not vibration.
Technically, the voltage results from deformation of the crystal, regardless of whether it's from pressure or vibration etc.
Awesome. Even Eric learns new things every day.
Yo man so I had a knock sensor CEL on and replaced the sensor 3 times thinking they were bad sensors. but not knowing I was accidentally connecting the power steering plug into the knock sensor and the knock sensor plug into the power steering plug. Once I found out I switched the plugs but the cel was still on and I drove it about 200 miles now and still on. Could I have broken all the sensors I bought by plugging the power steering plug into it? I have also checked continuity it beeps every time so I know the harness is good. Should I just buy another plug and try it again? I have a 2000 civic with a d16y8 engine
Eric, I'm really enjoying these response videos, that was a great idea on your part. Thanks for taking the viewers' feedback.
you have come a long way, i love your way of doing things now.
Thanks for the info watch your voltage drop test , and that worked for me . On a Volvo knock sensor voltage started out at 4.8 at harness then then dropped to .01 on old , new dropped to 2.4 on new , the ohms did also only read on 20 m and they both read the same .
Helllo EricTheCarGuy, I really like these RE: videos! You are making an obvious effort to communicate with the comments posted in your videos in mass, that should be commended. But I have to say that the concept is brilliant! I enjoy these videos because they follow up on already great videos.
@Desterado in this video. ERIC said the "auto range" feature wasn't good enough because it did not go high enough.
Example: you have bricks on a pully. Put the rope is only long enough to pull the bricks up to the window of the house. You need them on top of the house. Though this may be easier, it is not a good option.
Hello Eric!
Have being Long Time Subscriber and i really enjoy your educating Videos!
I am trying to Help Out a friend with His European CL9 Accord K24A3, he is getting the P0325 Code, We have tried so far to test the voltage of the sensor as you showed on the video, we had somewhere arround 11.94 Volt on it, we have also the Honda diagnostic system HDS HIM (not the original one) and we even tried to troubleshoot the problem with the instructions given from the service manual, which include testing if there is a short circuit etc... Everything was ok, of course we raplaced the sensor as well, 2 times, the 2nd one is a very expensive original from Honda, the problem still occurs, (we even changed the knock sensor wire) with the HDS we even tried to test the VTC and we get everytime failed test and the lamp goes on, (the VTC Test is about testing the values of what is supposed to be with the current values and we also tested the camshaft sensors from vtc and were ok) as we were driving arround with the HDS connected and as i was seeing live data by it, i found out that whenever the Check engine light comes on that the voltage of the knock sensor goes from regularly 0.04 - 0.06 -8 to 0....
If you have any idea of a possible troubleshoot would be very much appreciated and will get you some more subs just for the sake of helping!
Friendly regards and much love From Europe Sir!
Might want to search his videos (seemed like he addressed this issue), I believe he said you can replace the fluid or try putting some belt spray meant for the type of belt you have, just depends on the type of squealing you are hearing to know what to do.
Your dedication.and honesty, top notch Eric.
The auto ranging function is for continuity tests for things like fuses. Which means that if there is close to no resistance, it beeps. Which is great for testing fuses, because close to no resistance=good fuse, lost of resistance=dead fuse because there is no connection from one side to the other. In other words, your test was correct the first time. If it beeped, there was no break in the circuit, since it didn't beep, it meant the resistance was too high and the knock sensor was broken.
Good Morning @Eric i have a subaru forester 1999 , since yesterday i have a probleme its like my car is rumning on 3 cylinders, when i check the plug i dont see spark coming out of it .
question 1 in the plug are all of them have the same resistam omhs (negative) or the same voltage (positive)
because i track it to the ECU and dont seem cut or dammage .ppls saying i should change my Ecu .
Help please .
Thanks for the help that wire is where the short is, either the solenoid itself or in the wire, thanks for responding and your info.
great video, its nice to see someone revise their how to's when they know more about the way to do it.
Hi, Eric good explanation.
So the knock sensor is fine ?
On the car ( I believe is the new one on the car right!
So should have the knock sensors under 700 hms ?
400 to 700!
Because I got the P0325 code sensor 1 bank 1 says there circuit bank one, and I don't know how to test it.
My car is toyota 4runner 1999 3rd generation.
I just got 2 days ago this code.
Thank you again Eric....for you video.
If you can help me, thanks thoms up.👍
Excellent as usual. I also like voltage drops, especially where connection integrity is in question. You should consider doing a video on how and why you do drop tests.
Very good! Thanks for the video.
Like you said it yourself in an older video, the one about manuals and the "errors" you thought you found in them and later prooved to be something you did not do correctly. "make sure you do it correctly before you blame the manual" :)
Keep up the good work, thanks again for the video
Hello Eric,-question -I had the "knock sensor" replaced on a 2003 KIA Rio- the engine appears to function properly-however the car "SHAKES" I also had the timing checked at the same time-can you install a knock sensor incorrectly and if so would this be the cause of the car,s shaking- there are "NO CODES" appearing on the OBD SCAN??- ANY IDEAS GREATLY APPRECIATED; long time viewer PJP
If you cross the prongs, you'll either see a resistance reading or you'll find continuity. If the bolt goes through the center of the sensor, like this one did, then put the ground prong there, or on the negative battery post.
My element 2006 engine light was checked with code p0325 few months @t said "knock sensor, and battery voltage low." I replaced new knock sensor. Then engine light disappeared. then the battery was tested still good. But battery power run out. I replace a brand new battery. So far it is OK. Lately, when I turn on the ignition. It is hard to turn on, second time, I can turn on the ignition. I went to ask the mechanic, one store mechanic said it is not the fuel pump, It is starter. Second store mechanic said fifty-fifty starter issue. When the gasoline is in low tank, it is hard to turn the ignition. After I fill full tank of gasoline. Turn on the ignition has no problem. Yesterday, my engine light on again. I have O'reily check the engine code again. It said P0325 knock sensor, and battery voltage low.
I have already replace brand new knock sensor and brand new battery three months ago. So, what is the really issue of code P0325 to my element? Be advise. Thanks,
Same problem i got in accord cl9 k24a3
Great one , i appreciate you taking time to explain things for the benefits of viewers.
great video! Im just gonna add some point, The beep function is not really an auto range, that function is really just dedicated to continuity test and depending to a meter that beep function will not work or give you infinite resistance if the resistance is greater than 20k ohms or depending to the specs of your meter. thats why i never use that beep function even doing continuity check, because it my give you a false indication.
I have a question I have a 98 accord v6 3.0 the green key immobilizer is on car starts and drives but won't go past 3000 rpms. everything I read says that the car shouldn't start with the green key on. what could it be
Resistance checks can be tricky as the device you are checking can change resistance depending on how much current is passed through it.
So some older meters will pass more current than newer digitals so unless you know you are testing a resistor or peice of wire the results can be foggy.
some meters send the current the wrong way so semiconductor devices may not appear to work.
Smashing recap eric :-)
The starter solenoid (small wire) typically receives a current when you turn the key to crank the engine. When this happens, two events occur: the pin that engages with the flywheel to start the engine moves forward, and an attached mechanism slides to make contact with the big connector to the starter motor itself. Thus it rotates until you release the key from crank. The pin is spring loaded and goes back into the starter when the engine fires. I assume you have a no start no crank situation?
hey got a question for you i got 1990 blazer 5.7 tbi had engine rebuild about month ago got a few up grades bigger cam so i had to get my computer chip tune to raise fuel and timing on the chip i change pressure regulator and adjust that the cam i have in there is xe 262 h comp. cam the block was 30 over.and i still have the factory swirl port heads i should had put some vortec heads on there...but for some reason cant get it to run right just dont have no power and im getting a ping sound from engine and #6 had oil on spark plug threads only the rest of plugs are fine i dont no where im getting the ping sound dont no if the oil on the spark plug have anything to do with it or something with the fuel and timing is not right..
thanks for your video eric .. question,...I got the P0324 code powertrain (knock control system error) , ran the car on idle for 20 minutes while i connected the OBD 2 scan with torque app and the error clear with not intervention when i lookup in the internet . Could you please let me know where is the knock sensor in the chevy cruze, ? Do you know any link where i can see it , replacement I searched and they recommend,.
SU13919 for chevy cruze lt 2012 turbo,. any recommendation. This error appear when i was driving for 40 km, and arrived parked the car and look for obd scan and tested next day and clear,.
Good point, I should have added that to my response. I think ericthecarguy has a forum, but I do watch many videos on vehicles, so I could be wrong.
My engine hesitates at Idle but if I disconnect Idle Air Control sensor, it seems to work fine . I got P0328. Are Knock sensor and IAC Sensor related to somewhere?
You are so thorough. Thats why I learn so much from you Eric. Awesome!!!
Marc
A knock sensor can be faulty and still pass an ohm test. I had a P0325 code and the knock sensor was within range when checked with a meter. I bought a new one for $12 on Amazon. The ohm readings were the same on both sensors, but the new one put the check engine light out and the Subaru runs like new...👍
What brand sensor did you purchase?
Would this a bad knock cause engine surge and low idle...I have an 07 Subaru Impreza outback sport and it’s driving me crazy
Erik, I have a 99 Dodge Durango 5.2 it spark knocks a lot unless I run premium in it and that's killin me. There is no knock sensor, EGR and can't turn the timing back. I have a scanner and my long term and short term fuel trims are -1.5, ignition advance runs 3-4 degrees at idle. It has single platinum autolite plugs in it, temp runs about 192. I've done an overnight soak with sea foam, it runs great but can't get rid of the detonation, please help.
Possibly too late but plenum gaskets tend to suck oil into the intake on those engines and can cause detonation
My 2001 2.5GX did the same thing, intermittent codes popping up.
There where two culprits:
1. O2 sensor, when i installed a spacer on it the CEL still came on, but not as frequent.
2. Knock sensor, replaced it, and i haven't seen the CEL light up for a week now.
depends on what broke, the pulley ore the little axle where it sat on, if it whas the pulley you can replace that ( i ques cause on most vehicles it will ) if its the little axle your pretty much screwed, you either need to replace the part where that pulley sat on i.e. alternator, waterpump, power steering pump, airco compressor. but if it whas the crank your toast.
Hi eric i got a 2001 lexus and i check the code knock sensor bank 1 and i change it both already and still coming out the code... that knock sensor i buy it at 1A auto
got a question ERIC I got a 91 Honda accord and the problem is when i use the clutch the clutch pedal gets stuck at the bottom of the floor sometimes and i have to pull it back up wit both my feet what should i look for first ive checked my clutch via your video on that ford focus
Very good explanation. Never knew what it really did till i saw this video. thx!!
Hi Eric, I have question.my car accord 2003 4v .my car problem code PO325.I already changed knock sensor, why engine light come on again?
Thank you for your respon.
Eric does not reply to youtube questions, if you want him to answer your question you will have to post it at www.ericthecarguy.com
Another video I recently watch was eric replacing a rusty steering knuckle that caused noise and made it harder to steer. Can you steer the car fine and just makes noise when you turn far right or left, or does it make noise no matter how much you steer one way or the other?
Thanks for this video! my 96 Outback just pulled up this code.... time to break out the dvom
1) Disconnect connector from knock sensor.
2) Measure resistance between knock sensor
connector terminal and engine ground.
Terminal
No. 2 - Engine ground:
B2M1090
: Is the resistance less than 400 kW?
: Replace knock sensor.
: Repair ground short circuit in harness
between knock sensor connector and
ECM connector.
NOTE:
The harness between both connectors is shielded.
Repair short circuit of harness together with shield.
Question anybody I have a 98 Nissan Maxima knock sensor has been replaced but it keeps showing that the knock sensor needs to be replaced what's the problem what am I missing? Help me please.
The new Bluepoint meters are fully auto ranging, it only has one selection for ohms. I really don't like it when I do voltage drop tests, and I don't notice that it is at mV, instead of just V.
hi mate, i got 720kohms for my knock sensor. does that means its toast? should i change it to new? got P0328 code prior. need some advice. cheers.
Maybe if you could explain what a starter silinoid actually does I could understand ...All I know is there are two major wires and one small one at the top of mine and that wire is what is shorting and not giving me power some times, it appears it has a line in the wire so it may indeed be 2 wires so I dont want to cut it.
hey eric today my friend's 1993 ford probe gt broke down because of the serpentine belt breaking. they jumped it and they put a new serpentine belt on it but when they started the car for the first time the crank shaft pulley broke off. do you know how major this repair will be? please reply we would really appreciate your help thanks so much eric!
your right. we are learning every day.
Hello Eric, can you read this and help me out? Thank you.
My Nissan Quest engine seized so I had to replace the engine. I was going to scrap it, but wife said no, fix it okay wifey....
I bought a nissan quest engine with fairly low miles for 350 only at a junk yard shop. A mechanic, which I don't know him very well, put the engine in. After a week, he called in and said the van is ready. My wife was happy so I did too.
50% of the Problem : I drove the van from his shop without issue, but I've noticed two things, first one, the fan was on all the time. Probably he couldn't fix the automatic kick on. Second, the alignment was off.
Serious problem: I drove it today, and the engine wants to stall. The rpm is high and runs rough. When you want to accelerate, the engine seems to be flooded or something choks it. I had to drive it very slowly on interstate with only 40-45 mph with hazards on.
Hint: This mechanic is very busy. Today, I popped the hood and found couple stuff that he have forgotten to tighten them up.
1. There is no bolts on fuse boxes under the hood.
2. the radiator hose that goes to the thermostat housing was not clamped on. Water was leaking.
3. Cable harness was not tightening up.
4. Battery was no placed in the correct position.
Is this mechanic trustable? I would say that he did something wrong to my car. Your insights much appreciated.
I scanned the emission port, and come up with 2 codes that are belonging to the O2 sensors. I am a light mechanic, but I don't thing the O2 sensors would cause this problem. What would it be the issue? Today, the mechanic said the problem could a knock sensor. But there is not code for knocking sensor. Thanks again.
Interesting. I did not know about the range limit in the auto scale. thanks
So mine came on but can't get it fixed for another 2 days. Can I drive it still?
What causes the throttle to not throttle at the throttle body. I have a gmc suv that all of a sudden reduced engine power and the traction control light came on. The parts place put the computer diagnostic thing to it and got code u0107. It won't let the engine rev at all and this is the first time I've had an issue with my truck. Im sure why but just about 15 to 20 minutes prior to this malfunction I bought sum of 50 dollars gas noticing that my fuel light was on.
So, I changed my Knock sensor but after few hundred miles my check engine light up with code P0325 a knock sensor. But now it kind of rattles in the engine. I believe its coming from a cylinder. Do you know what would be other issues that would make the knock sensor light go off other that the knock sensor since it's changed?
+Mungbeanz100 no I did not, but I figure out what the issue is. before you spend more money on the knock Secor diagnos the issue by looking if the car isn't eating oil. With in my case was the problem. I also check my spark plugs and found oil in cylinder 2,3and 4.with means that the head gasket was cracked by the car eating the oil. and that's why you will get the check engine light on because you might not have any oil in your car with over time will cause the engine rattle.
+Paul Komarek did you figure it out?
It's air in the power steering system. Flush new fluid. If it's not going to help replace the pump
hi boss, i want to ask you something, i hope you can help me, ''in the manual for 01-07 dodge caravan, (i have a 2005-3.3 engine, ok, in the manual is no instructions for how to replace the knock sensor for 3.3, only mention the 2.4 and 3,8, i have a problem with a knocking sound, i order the sensor, but i cant find it, i check everywhere around the engine, is only something like for 2.4, in the back of the alternator, close to the thing to check the oil level, so no sure, i don't know what to do, i also order the ADP,now waiting for the tool, but in orreally they give the sensor that they tell me is for 3.3, thank you man, nice vids, very helpful
Eric does not reply to youtube questions, if you want him to answer your question you will have to post it at www.ericthecarguy.com
Interesting vid my friend...nicely done!
Although piezo could be used, at high temperatures they "depolarize", or loose the ability to make a voltage when disturbed. I think the knock sensor you're using is probably a coil of wire wrapped around a magnet. A piezo has a resistance in the gig-ohm (1,000,000,000) range while a magnet/coil arrangement can be easily made in the 700K ohm range. I'm not a mechanic but an electrical engineer.
No listen on the silinoid the top wire ? control wire is shorting, my question is can I by-passthis wirwe as ye it is causeing a no power issue and id I hit it right it will start, but I am wondering about the grommet that is at the top does it have 2 leads or can I cut it am wire it direct > I am in a disareey as it seems to have 2 wires and is shorting causeing my truck not to turn and it losses all power if not correct et it still wont star ? How do I rewire that one control wire to silioid
I replaced both sensors when I had only one code. Now the code is back one only it's sensor 2 bank 2. I'm sorta lost don't know what to do.
Good video. I'd like to point out that the CONTINUITY range on the DMM is not good for testing resistance. It's fine for open/short testing. This setting outputs a higher value of current which is not ideal for sensor testing. For low resistance circuits is fine. On the other hand, as therealjammit pointed our, a resistance check on piezoelectric devices is useless. A continuity check for open circuit is fine, but crystal devices are in the very high resistance range. DMM are just not capable.
i liked this vid even tho it wasnt me doin the job i like proof thth the job undertaken is carried out and components are installled correclty and are working correctly call it lack of confidence in my work or whatever but i doubt everything
When does the detonation occur? I have a car, 2000 Pontiac Grand Am, that I thought had a detonation problem. I increased the octane of the fuel, and it didn't help. The problem, a grounded out spark plug.
Thank you Eric, I did not know auto Range works. Now I do
My xterra was having trouble going uphill and at some point it began to rattle I scanned it and code p0328 came up looked it up and said knock sensor. Will that solve that issue?
Did that fix it? I bet your xterra has the 3.3 v6 doesn't it. My friend's '98 Infiniti QX4 (suv just like a pathfinder with the 3.3 v6) is doing the same thing you describe.
Do you want us to replace the 12 dollar knock sensor or 125 an hour diag time? Ask customer
can some one please tell me if a knock sensor will make a car misfire/ idle bad/ engine jurks at all speeds/ and power lost? honda accord 2002 2.3, the car has been in two repair shops, will out finding whats wrong. help!
charles kernell Yes it Will, my BMW did the same thing and I had a knock sensor issue
Unfortunately, Eric, the green-printed Auto-Range scales on the meter are almost impossible to read on camera. They are all but invisible, even on close-ups. When held in the light ju-u-u-ust right, the characters can just barely be made out. (Ghost flames, anyone?) Caused me just a bit of confusion, anyway.
Hi eric!!! Ihave a question on some rotors why my rotors look flat and i seen another ones with a big hub sticking out what is the difference? Im sorry if cant be clear but i hope u help me out with this.
Eric I really need your help Man, My starter silinoid in my 93 explore is shortin out bad, The top wire wich is smaller, than the other two wirse, I called to see if I could get a new Harness but they told me olny threw the dealer, I need to know as it appears the wire hase 2 leads in it, Man please help me I wanted to strip it and just solder it direct but with 2 leads I dont think I should chop it, do you have any advise for me , I am just going back to work and the whole situation has me .
Hi Eric ! I'm a big fan of your videos ,my question is .Is this test of the knock sensor apply for all vehicles or just subaru models .Much appreciated. .
Eric does not reply to youtube questions, if you want him to answer your question you will have to post it at www.ericthecarguy.com
I think it is safe to say "On MOST vehicles". Some sensors DO VARY. Detonation detection methods vary. You need to know WHICH TYPE of sensor is being used. Field effect (transistorized) and coil, are two types that I know of, to consider.
Field Effect sensors CAN BE DAMAGED by "probing" so BE CAREFUL.
i don't know why, but the kknock sensor u r testig works diferent than the ones who we have here (argentina).
here the knoks sensors don't have a 5volts reference, because they are "voltage generators" for diagnosig it u have to put ur multimeter in alternant voltage and toch both kock's sensors terminal.
sorry for my bad english, i hope u can understand me.
Eric I am having a problem with my car, According to the mechanic he said the car runs good when that is not on (knock sensor) He said I could run My 1999 Grand AM GT without it. I feel that is a bad idea running the car without the knock sensor.Last week they said it was the Catalytic converter which they changed. Problem still there (Problem: only at take off it I guess sputters) He also says he is not sure if that is the problem (knock sensor) until it is in and run the car. Is that true?
hey eric ive been wondering about subaru's boxer engines, what are the pros and cons about the engines?
Do older OBDI systems sense bad knock sensors or is ODBII better at it?
I hava problem with a 2001 infinity G20t I got spark and gas the injectors will not open I spray quick start it runs
@giovanni Ochoa what was the price for the sensor
Hey myself and another technician have the same meter and where getting different readings on a battery draw test lol we had to find a old fluke meter to get a true reading those meters are ok not the best
Any idea where is my knock sensor in my 94 Isuzu trooper 3.2?
In a wreck , Eric what can I do to get the wires that go to the silinoid and rewire them , please if you can help me I would forever be in your debt. I am so sad I have to spend hours trying to get the right contact, I dont know where to get the wires that go to the silinoid, it looks like the one wire that is shorting is actually 2 I do not want to chop it man, please help me Eric.
I just googled Eric and it is the command wire to it, what do I do , :(... Must I get a new harness from the dealer or what ? please , please help me.
What happen on code p0325 . Knock sensor what funcion work
hey this has nothing to do with knock sensors butt what is your opinion on kyb struts vs sensen struts vs Monroe struts
Thats what its all about. Learn something everyday.
Hey it's oalright man I have zero knowledge of the electric crap, but Thank God I replaced my solenoid and re did all the wire and my truck starts, I was not trying to be stupid I was just worried as I have just gone back to work and the truck decided to fk up my first day back, But I fixed it, but I do hate the electronic part of cars.
that's a lot of views since youve uploaded it 8 minutes ago :p thanks eric :) can do a lot myself to my car :) awesome man, keep doing what you do!
Subaru makes the knock sensor nice and easy to change~ some can be inside the block
If it hasn't been done already, I would change out the timing belt. My friend had an outback and the engine basically blew up, because the timing belt snapped.
IIRC the belt should be changed every 100k miles, and at 50k~60k miles for regions with extreme temp variations.
Dude what is beep mode? I assume you mean continuity ? FYI continuity is not resistance it’s the reciprocal of resistance. Or in simple terms opposite of resistance it’s a good test for wires coils and things like diodes not for checking resistance
hey what ever happened to the so called "blown" head gasket, or whatever they said was wrong with it.
Classic case that we as technicians are #1. humans and not perfect, and #2 always learning. Wish someone would pound that into my boss's head : ) great videos!
does it have drive by wire? or is there a throttle cable?
'm your fan! nice Job man.
voltage drop test is more precise, great video
Both systems read a bad knock sensor, but OBD2 will give a more precise code since it's not limited to 2 digit codes