Camshaft Position Sensor Replacement GM 3.8L Series 2
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- Опубликовано: 4 окт 2024
- In this video I'll demonstrate how to replace a camshaft position sensor on a GM 3.8L series 2 V-6. The vehicle featured in this video is a 2001 Pontiac Bonneville. Please verify in your repair manual if this procedure is the same for the GM 3.8L series 2 V-6 you are working on. There may be a few out there that the removal and replacement procedure may be different. Verify that the procedure shown in the video is the same for your vehicle.
Do note: If your vehicle has a diagnostic trouble code or codes pertaining to the camshaft position sensor it will be necessary to erase these codes after the repair. The codes can be erased by disconnecting the negative battery cable from the battery for 10 minutes. (Of coarse if you followed the directions given in the video you would have already disconnected the negative battery cable before beginning the replacement procedure and the codes should be erased by the time the sensor is replaced and the negative cable is reconnected.)
As mentioned in the video, it is recommended to disconnect the negative battery cable before replacing the sensor. **BE SURE YOU HAVE YOUR RADIO CODE BEFORE DISCONNECTING YOUR BATTERY CABLE** (the code should be in your glove compartment in your owners manual or information packet) The radio may not work if this code is not entered into the radio after the battery has been disconnected. Locate the code and be sure you have it before going forward with repairs.
Of course, you will need to reconnect the negative battery cable end after the sensor is replaced. (I'm sure you would have figured that out) :)
Also: Its not a bad idea to rotate the engine and verify the trigger or magnet is not missing from the cam sprocket. On some vehicles the trigger or magnet can fall out. You'll need a mirror and a flash light to verify this. Repair as needed. This video does not go into this as it is not the purpose of the video.
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DISCLAIMER
Barbour's Auto Help is not responsible for any damage or personal injury incurred in the process of performing any auto repairs done by you the viewer. Automotive repair is extremely dangerous. Repair your vehicle at your own risk. It is the viewers responsibility to verify all information and procedures as outlined in YOUR REPAIR MANUAL AND OWNERS MANUAL FOR YOUR VEHICLE. Owning and using a repair manual suited for the vehicle you are working on is essential for correctly and safely performing ANY repair to said vehicle. Always wear safety glasses and heed all instructions for use applicable to any piece of equipment you may use. Due to circumstances out of the control of Barbours Auto Help, Barbours Auto Help makes no guaranty that by the use of the information given in this video a quality repair will be made. Barbour'sAutoHelp makes no guaranty that the information provided is totally complete, syncronized and accurate. Verify everything using an appropriate repair manual. Follow the repair manual over this video's content. You can do it. Do it right and do it safely.
Repair your vehicle at your own risk! Barbour's auto help does not guaranty a proper repair using these techniques. 
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Thank you man I rely on videos like this to keep my car running. You didn't even need to do this, simply doing it just to show us how. Thank you man.
I dont make videos solely out of selflessness. I do benefit from them too. But, I do truly want to help folks.
Your videos are the only ones I have seen that are useful and I have watched a bunch. The main problem is a lack of light and yours have great light. Another problem is many people obscure what they are doing with their bodies and they many times skip essential steps. I spent 10 years teaching at an automotive tech college and know the importance of thorough instruction. Thanks!
Thanks for the kind words!
OMG, Thank You +; I have been saving expensive Shop repairs for decades DIY--the stuff I can't do goes there (and 2 credit cards) THIS VIDEO saved my weekend Mr B. Such a great video ( like Eric the car guy's) My block is so covered with heavy sludge bec. of an unreplaced PS Pressure line that I was planning on Saturday and removing the PS pp, and maybe even the water pump ( and knuckle skin & patience )
I can't believe the nerds that CAD designed the Series 2 ACTUALLY LEFT something that was a simple repair . I cuss those underground cave design monkeys each time I work on this no-space transverse alien designs ! THANKs SO Much !!!
OMG! THANK YOU! My Park Ave has been parked for 4 months because no one knew how to fix it ! I found your video today and am going to fix it myself (grandma with tools). I was told the harmonic balancer had to be removed, blah blah blah. Thanks again.
That's the crankshaft position sensor...but ikr😅
@@tyquik007 so you have to remove the harmonic balancer
@@-g.k.4389 for the crank sensor yes ...not the cam sensor
So did it run then die or just crank no start
@@ken79bu it would start and get me down the road then stall.
Great video! Troubleshooting a 94 Bonneville that cuts out when it warms up and Ive got a feeling it's either the camshaft position or crank position sensors. Now I know how to do both. 🥳
4 years later and Still helping us out with this nice detailed video thank you 🙌🏼
Happy to help!
2007 GP GT.. Crank No Start ... Will check the codes first. This is good instruction video. Thank you!!!
Good video! I have found on a few 3.8L engines that the magnet pickup on the lower timing chain sprocket had eroded away.
I have a 2003 bonneville after watching this video i was able to change the sensor without removing the reservoir it took about 20 minutes... Thanks for the video you are a big help keep making video's like this...
Will do! Thanks for commenting.
Great info, awesome camera work, and specific details on the repair... Thank you!!
No problem
Yours are the best how to videos, by far, mainly because of the light you use. Most others are too dark to be useful and many times they obscure things with their bodies.
Thanks again
This is a very good video to watch if you've never done the procedure it is very helpful
Your videos on the Bonneville have really helped me save a lot of money, thank you.
Hey, thank you for that comment! It’s encouraging! And good luck to you.
BarboursAutoHelp I am having the same problem with my 2000 Buick LeSabre PO341 I replace the cam sensor With the one from O’Reillys and the code came back so I took the sensor back and replace it because I thought maybe the sensor was bad but the code still keeps coming up
BarboursAutoHelp HELP
AWESOME INFO & demo Keith, Perfectly explained.
I’m grateful you’ve got a Bonneville. God bless brother.
Had a Bonneville. It's gone now.
The videos are still here so I still appreciate you. 👍🤝
@@BarboursAutoHelp
Can you help me please with my 03 Buick LeSabre backfires in the Intake. Upon start up at time 520-912-5674
You're hand sounds like Ned Flanders. 😂 With that said, its helpful just like he is. Thank you for the info, bro.
Accurate! I’ve had people say I sound like Bb Ross and even Snoop Dog. Ned is for sure way more accurate. Glad the vid helped.
Kind thorough easy to follow narrative. Thanks
Easy to follow vid. Great job
Just a kind note, and only to clarify, this is the removal of the "Cam(shaft) Sensor." The "Crankshaft Position Sensor" is on the forward side of the harmonic balancer. It is a considerably harder project.
I’m not sure I understand you. Are you working on the same vehicle?
I am sorry for any confusion. I made an edit that clarified my comment. Basically, it can be easy to confuse the Cam Sensor (Camshaft Position Sensor) with the Crankshaft Position Sensor. I was just adding a point to clarify.
My vehicle is a 1998 Buick Riviera that has the 3800 Series II with a supercharger. Mine has much tighter work spaces.
Thanks for your video.
BTW, are there two distinct symptoms for a bad Camshaft Position Sensor v. a bad Crankshaft Position Sensor?
@@robertbrooks3917 I have a 1993 Buick regal 3100 would the crankshaft position sensor be in the same place
I think you can just swing the res., forward out of the way without disconnecting the hose....Great vid as always keith!
Thanks John! and thanks for the helpful info.
@@BarboursAutoHelp Ur very welcome. I miss ur 3800 vids! 😆
Thanks for showing this video - my problem is when first starting the engine it runs good but once I shut off the engine it won't start back up - this video is going to solve my problem -
Sounds possible. The crank sensor is more where I'd be looking though.
I'm having this problem at the moment.
I have already switched the MAF, MAP, Crankshaft, and Throttle Body sensors.
Will be doing this one tomorrow, and I hope this fixes it.
I've been without a car for a month already.
Have you tried having a tech diagnose it for you? Sometimes it can actually be cheaper. It could keep you from buying parts you dont need.
Thanks for your information
Great vid now i can replace mines myself
🤔
Thank you 👍👍
perfectly step by step for a 2000 pontiac gran prix gtp 3.8lfi SC
You should rotate engine and make sure magnet on cam gear is good.
I have 93 Buick PA 3800. A shop just put in a new crankcase position sensor. The tachometer had been acting goofy and is now dead after the new sensor. Car runs for a while then gets hot and stalls. Now it is throwing codes 18 and 41 related to the camshaft? Any ideas? The shop did not fix it...
i just changed my crankshaft sensot and my cam shaft sencer looked like it was cracked and my car wouldnt start would that be at fault or stop my car from starting
Only difference inbetween this video and the super charged version. Is you have to take both of the belts off and remove the harmonic balancer wheel and the cam shaft position sensor is right behind it
My camshaft position sensor was good. The problem was the magnet mounted in the camshaft timing gear that disappeared because it was held in place with plastic holder which has deteriorated. Hey GM plastic and heat do not play well.
Very good job bro..
Thanks
Can this engine start and run without a camshaft position sensor?
Thank you very much
Yep
Ty sir
can you do mine you made it look so easy
Lol
@@BarboursAutoHelp can you help me why my car backfires in the intake upon start up 3.8 LTR
Do you have a video to replace camshaft position sensor on a 2008 G6 gxp 3.8 ltr? And will I have to relearn the timing and cam in the ecm after replacing. It must be similar to the bonneville video or am I mistaken?
I don't have a video on that. Not sure about the rest.
Funny thing is car runs fine!
Easy job... Guys I don't know why mechanic charge to many money to replace it
Awesome job!!!! Thanks
Our pleasure!
Hi keith do u remember the resistance value of the cam sensor?
I do not. Some cam sensors cannot be tested this way. Not sure about this one.
98 grand prix se p0336 replaced Crankshaft PS still same problem cel light still on . What do reccommend next ??
Does this work for a 1999 buick regal GS supercharged
The camshaft sensor is connected to the coil module
This is off topic but it's weird to see this engine facing east west all of these engines are north south over here, I'm guessing this is a front wheel drive car?
Yes it’s front wheel drive. Where are you from?
Awesome job!!!
thanks!
Hey Keith, I have a 2001 Bonneville that starts to shutter and shake after warming up. It only happens every now and then. When I run the code reader nothing shows up? Do you think it could be the Camshaft position sensor? By the way, you have a great RUclips channel, thanks for all of the videos!!!!!!!! @ Z-speed.
I'd suspect maybe the ignition module or a coil. Usually a faulty cam sensor will set a code. You could take the module off your vehicle and send it to the parts store for testing. They should heat it up pretty good to see if it fails. I'd call ahead to be sure they have a tester. Maybe that's it. Let me know what you find.
I just replaced all of the ignition coils, so I will try the ignition module! Thank you so much for the advice, I will let you know what happens.
Have it tested before you replace it.
Is that where the magnet is? Is that a code 31 or 41 I got 26 27 28 31 41
2005 Pontiac Bonneville 3.8 will die in the middle of driving and will not crank. In suggestion is appreciated. Thank you in advance
We’ll what other information can you give me. Did you scan it? Do you have fuel pressure? Spark? Etc?
Possible bad crankshaft position sensor. My older series-1 ( 3800) use to do that. Also, check for shorted out wiring going to crank sensor, if wires are burned into each other or bare wires is touching metal engine can cause a short in wiring which will interfere or damage crank position sensor.
I wonder if same is for a 89 reatta
1991 buick regal 3.8
Do you need a relearn on the camshaft position sensor after replacing it?
I would aldo like to know ive got a 94 buick lesabre
@@jackgorlick2716 from everything that I've looked at it seems like you don't have to relearn it but when replaced mine I started having misfires which was very confusing. I might have bought some bad sensors tho. I would just replace it and see what happens
No, no relearn needed. Sorry, I'm late to the conversation.
what about the interrupter located in the flywheel that sends a signal to the computer? you have quite a bit of work to do
The video only goes over the sensor. The interruptor does not have to be replaced in every case where a cam sensor code is stored. It only has to be replaced if damaged or missing. I believe I have information in the description similar to this.
Will a bad camshaft position sensor cause a car to lose power while driving i think thats whats wrong with my 2003 monte carlo
Do you have a code for it?
@@BarboursAutoHelp no autozone told me it was both the up and downstream o2 sensors and the catalytic converter so i had it cut off and replaced with a straight pipe and its still coughing like not getting power until i hit 35 miles and or faster then it stops
Usually a code will set if the cam sensor is bad.
Good video, thank you!
Thank you too!
How did u remove and install on the sensors on the front they are soo hard
SensorS?
Is this camshaft or crank shaft sensor?
Tis what the title of the video states.
@@BarboursAutoHelp the video says cam sensor replacement. Aren't the cam sensors on the heads? I think your replacing the crank shaft sensor.
Grab a manual and check. It's always good to do your own research. You don't have to take my word for it. You already have my answer.
Could this help with a random misfire code?
Mmmmm... usually you would get a cam sensor code.
Is it in the same position on the 2001 buick park ave
Take a look and see.
3.8 v6 odds are yes.
Does this fit Chevy Impala 3.8
Not sure. Pop your hood and take a look.
What am I looking for?
??? I'm assuming you would check to see if its similar to the vehicle in the video....
Can you get at it better from under the car?
No its easier to do it from the side he did. Right next to the overflow tank.
It seems like the 3.8 series 2 engine has more room for the camshaft sensor replacement and the series 3 engine the 2008 Buick Lucerne. Cuz it's kind of a b**** to get in there to get the bolt and it's the hardly any room to jiggle around
What is the correct torque on that bolt?
Nice and snug. That's it.
Yea one and a half ugha dugs. Seems legit XD yea real firm pressure til its good snug n just dont torque the heck out of it. As an old schooler here's my secret.. torque the sh#t out of it with just ur fingers, no arm shoulder leverage.. then enjoy the pain :D Or just look the dam torque spec up. I would speculate its no more than 8-13ftlbs. Just guessing dont quote me on that
The problem I have is nothing like a cam sensor or crank sensor. I changed the icm all the coils new plugs wires fuel filter fuel pump and it runs great and then I’ll feel it sputtering and then the cel comes on I check it and it says cylinder 5 misfire I did compression check 120 like in all of them I’m lost and needing help anyone
Oh I also put map sensor pcv
Was it doing the before the parts were replaced?
@@BarboursAutoHelp it had. A random misfire so I checked in the pitch black and seen wire Arching so I got new coils plugs wires
It’s runs 1000 times better but just the one misfire is just pissing me off
It's possible if nothing is wrong with the plugs, wires, and ignition coils that you have a bad injector. May no be a bad idea to have a tech look it over for you to be sure.
What is the side effects of a weak cam sensor?
check engine light, reduced fuel economy and slightly rough idle, also reduced engine power at lower engine speeds.
Bleachanna ok.. Thank you. Not throwing codes.
@@doug69b1 could also cause it to stall, shouldn't effect starting though because it bases off of the crank sensor for batch fire injection for starting until the computer sees the engine speed above 600 rpm and switches if it sees the signal
Bleachanna 2005 Grand prix GTP... I change almost everything. Change spark plugs, wires, oxygen sensor, throttle body, fuel pump, mass airflow.
The problem I'm having is first start of the day during warm weather, start but it hard to starts like its out of time start. Now the weather cooler now. The car hard to start or dont want to start. Take a while to starts. Still no codes.. During that problem I check the firing and fuel pressure and all good.I dont know if the spark is firing when its post too. I dont have anything to to test if injectors have power. Change the relay to the injector. Only thing that I havent change is crank sensor and cam. When the car start (during the hard starts) its sputters when you leave the motor at same RPM and kills fuel MPG bad.
@@doug69b1 did you ever found out what it was?
Hey how long does this job take approximately? Can you still do job without removing the coolant resovoir. I do understand for more room if i have to fine. It should be similar to my 1998 buick lesabre hopefully.
My 99 lesabre stalls after warm up and did not start if engine is hot did your car have same problem ?
It stalled once and had a code reader and replaced the ignition coils. The spark plugs werent tightened all the way in. Engine that is hot and didn't start up no haven't had that happen. Could you tell me more i know a lot aboit the lesabre as i had a ton of problems with it lol
I see your knowledgeable about the sabre. Mine is turning over but not starting. It died when I pulled in to park and hasn't started since. Changing the cam sensor now. Than fuel filter.
what makes one determine that this part is bad without a diagnostic piece of equipment?
Exactly
@@BarboursAutoHelp You didn't answer his question. What are the symptoms he's asking.
Lmao
That's a MAP sensor
Sorry, but on a 2001 Pontiac Bonneville 3.8L V-6 this part is a cam sensor. The MAP sensor is on top of the intake manifold. What kind of vehicle are you working on?
you mean MAF sensor...and no, it's not.
@@briansprinkle7855 MAP and MAF Sensors are 2 different kind of sensors.
No. Is a Camshaft sensor.
Audio sucks major!
Sure does.
Do one today without removing anything that that one 10 bolt 🔩
I have a 3.8 liter Oldsmobile 88it's stalling while I'm driving down the road and won't start after running for awhile and I'm coming to find that it's the camshaft or the crankshaft position sensor how far from the camshaft sensor is the crankshaft sensor
Not sure on your vehicle.