99 - 04 V8 Jeep Grand Cherokee: How to Replace Spark plugs, Ignition coils and TPS [rough idle]
HTML-код
- Опубликовано: 8 фев 2025
- Enjoyed the video or found it helpful? feel generous? you can donate on the main channel page. Thanks for watching!
This is a short video which will show you how to fix a rough idling issue on your jeep grand Cherokee.
Parts
NGK spark plugs: goo.gl/R0sJo7
Mopar Ignition coil: goo.gl/5q5XyU
Mopar TPS: goo.gl/h33hh8
Tools needed
Ratchet set: goo.gl/Iu0zNq
full screw driver set: goo.gl/Ye0zLZ
Spark Plug Socket: goo.gl/3AIAIF
3/8th drive ratchet: goo.gl/MxEePq
please remember to hit the like button if this helped you out!
Thanks for all the support!
-----------------------------------------------------------------------------------------------
Support this channel!
COINBASE
Purchase Bitcoin / Ethereum / Litecoin with your debit / credit card!
Purchase $100 of any crypto and get an extra $10 worth of bitcoin by using the code below
www.coinbase.c...
Ledger - Hardware cryptocurrency wallet
Keep multiple cryptocurrencies safe on a NANO leger hardware wallet!
www.ledgerwall...
AMAZON
Support this channel by purchasing items on Amazon.com!
amzn.to/2gHo1Zh
Genesis Cloud Mining
Use my code at checkout to save 3%: 8gIbXD
www.genesis-mi...
PRIVATE INTERNET ACCESS
Use a secure VPN to encrypt your internet connection
Easy setup and no logs!
www.privateint...
Google - Project Fi Phone Service
Pay only for the data you use and get the best coverage in the world!
Get $20 off your first bill by using the link below
g.co/fi/r/45A00V
-----------------------------------------------------------------------------------------------------------
I was at the beginning of task to replace plugs in my '04 Overland when I decided to watch your video. Had most of the coils & plugs prepped to come out when I noticed #8 (buried on passenger side at firewall) and remembered your video from a while back. Your tip about oil dipstick did the trick. I'll bet the engineers that design engines have big laughs over a few beers together when they talk about us owners struggling to get to some parts out. I find it amazing that you filmed this with one hand! Thanks.
And thank YOU for yohr comment which has led me to more help. Thanks. I am currentky sitting in boise, Idaho with my jeep. It is running like crap. Too scared to coninue on to arizona with it like this.
The fact that yoh had the same issues and this worked gave me hope. I want to go home. So, I need this to be the fix. Ive replaced just about everything. I broke the little clip on the cable that affaches fo the fhrottle body. Made me a new one. I bought this jeep two weeks ago in bend Oregon. I drove to Spokane and was on my way back to Arizona. Stopped in Boise at a rest stop. Upon leaving, I started the jeep and oh my. I didnt mess with it there. I called a tow truck go geg us and dropped us af a hotel. I know nothing (knew I should say) about jeeps. This is one way to learn. Crash course. Hands on. I m a single woman, by myself, traveling, and i do it all the fime, So....i like knowing how to fix MY things. Ya know?
Excellent video. I cleaned my IAC changed the TPS and ignition coil on my 1997 Jeep Grand Cherokee Laredo Straight 6 with 125,000 miles and it cured the rough idle and returned my Gas millage to normal. You gave very clear and easy instruction to follow and saved me from a $1,200 tune up and repair bill at Tires Plus. I spent $91.00 at the parts store and about 2 hours learning how to clean and replace the parts. Thanks for the video, the money I saved, and the feeling of satisfaction of fixing something myself =)
Michael green miek
9:12
They are magnetized? Here I always thought it was a rubber grommet that grips onto it. . . . Golly Jeepers what was I thinking.
Thanks, link375 ! I know this is a 7 year old Video, but it works, Simple and Straight to the point on what to do, Great! Need to replace some Spark Plugs..
Thanks for the video man! Helped out a LOT!
I’m no mechanic and never do my own work. So THANKS AGAIN 🤘🏻
Messing with the vehicles electrical, might be a good idea to disconnect the negative battery cable...Just to be safe.
Thanks for adding the links, that spark plug socket looks awesome, got to get me a set. I have a misfire in cylinder 3, very rough idle. So I'll be replacing all plugs and coils to be on the safe side, mileage @ 90K.
Thanks for the video. It helped me out a lot. I find to change the ECT sensor and your video helped me clear space to work.
Thank you SO much for making this video! This has been happening to me on my 99 grand cherokee limited for about 4-5 months and i couldnt figure out what it was. ill definitely be changing my coils and tps. my spark plugs were just changed.
if you're also getting poor gas mileage you may also want to get your first 2 upstream O2 sensors replaced. this was the final nail in the coffin to fix this issue for me.
Thanks for the video, looks like a lot of the other videos are for the I6 model which uses different kind of coil. Also thanks for posting the links to the products on Amazon, very helpful.
Great Video! Couldn't have changed mine without your help. Might want to include some dialectric grease on the plug before fitting the coil??
Another tip I would recommend is in tight fits, apply the socket into the hole without the extension first 👍🏽
Thanks man, big help and extremely detailed video. Help me figure out what was wrong with my 03 jgc, turned out had the same problem as you
all things considered overall video well done many links could be updated but coming from an ASE Certified Master Technician. Good Job
10 mm. Socket... the only socket I don't have. Thx for the vid. Was a little different then from my i6 lol
i wanted to see you pull the no. 8 coil. the wrench barely went on, and the coil looked to be as long as the extension i know it was a pain or trick to get to. do
you showed us how to do the hard one. well done sir
Very helpful. I have an 02 with horrible gas mileage and I'm %100 positive this will work. Also it's been sitting fir 2 months from overheating and lack of money to get it fixed. I have the money now. What would you recommend?
the downstream 02 harness might be shorting out, cleared all codes after i fixed that
Change the harness or clean and re-tape?
Good job! Thanks for posting. About to change the plugs on my father in law's '03 V8. This helps a lot!
When you replace the TPS did it fix your rough idle?
I have the same problems.. Thanks for you video..that help me a lot..
Thanks for the video but there was one very important part you missed. When replacing the TPS there is an o-ring you have to replace also. The new TPS should come with a new one. Make sure you put the o-ring on the TPS when you replace it. The TPS I just replaced in my 02 came with a gasket and o-ring. Don't use the gasket, just use the o-ring. It figures I need to replace the both back ones in my jeep. That's a job for another day. Thank you.
Very helpful, thanks for listing the tools needed.
Hey, I am burning oil (not a bad gasket and I couldn't find anything under the hood, need to get an official diagnosis) and I believe my spark plugs have been fouled due to the burning. The engine light only comes on in cold temperatures and will go off if I restart the car after its warmed up. It will do the bad spark plug shake but not when idling, only when driving at low rpms. I am going to be checking the plugs for fouling but I find it strange that it idles just fine. ALSO, I do not ever get a code on the OBD2, no pending, no active and all monitors look about right other than a very slightly high fuel trim. Dont want to say I'm looking for free mechanic advice... but I kinda am.
I'm no mechanic just a guy that does research on forums and makes easy to follow videos... my suggestions would be to try cleaning the Throttle position sensor, idle air control valve and air intake. You might also want to research the issue on the jeep forums to see if anyone has any other suggestions www.jeepforum.com/forum/
I gotta say thanks... i watched your output speed sensor.... when my reader said i had a p0720. ..
It works great... and watched your vid once and was not overwhelming at all...
Im just in process of spark plugs and TPS. ..
only thing is my brake pedal is hissing now... and need to change brake assist. Do you have a video on that?
Great help with clear instructions. Thanks
what if while doing this, i dropped my 6 inch metal extension near the 7th plug. is there anywhere it could fall that would be detrimental to the car/engine? i can't find it.
If its common knowledge to most its was not to me on how to install a TPS, there is a 50/50 chance on getting it right. Thank you for explaining the TPS installation and showing video because all video until I found your's just say re-install it while the video shows a hand in the way. Thanks again, hope my install fixes the current issue.
Was a very good video!!!!
I got that same rock'n idle but my coil pack is find but damn that spark plug I had was burnt, someone stuck wrong gap size in, it was a .045 instead of a
.040 this video was very helpful, I just wonder if bad spark plug can cause the rough idle I don't have a rod thrown
.005 gap plugs won't even be noticed. Just saying. A burned plug means your spark is fine. Any luck?
Burnt plugs are caused by pre-ignition in the cylinders because of carbon build up on the valves. Get some Techron fuel treatment.
Pretty cool. Very clear and understandable. My jeep has 168000 but idles smooth and gas mileage is about 16 intown and 19 hiway. How can i improve that
U have great mileage ur trippin. Mine has 12.6..... fucking terrible
Wow 12.6! Thats awesome, mine gets about 10.8... mine is the high output version although I don't know if that makes much of a difference, and like yours has all time 4wd. Worst gas mileage of any car I have ever owned :(
This was back in 2013.... How was the aftermath? And did it give you problems afterwards?
Great job! Thanks for the presentation; it will be very helpful!
High voltage bank 1 sensor 1 is a problem with upstream 02 sensor just had that problem with. My down stream bank 1sensor2
Some said Excellent video...Yes..Only when the camera stopped shaking, and got the V/8 in the frame..did I know this was a waste of time. SO easy to Post...SO hard to know what
we talking about !
Very helpful video. Thanks for the input.
Thanks for the vid. Helped a bit. Good job😁
In your opinion is this a very reliable automobile for heavy driving use?
Gas hog and the transfer case sounds like you got a blower under the hood. I have 280,000 on my 2001. It's all original except the engine which I had done at Jeep with 178,000. Oh, the transmission was replaced 2008, 102,000 started slipping but it's been solid since. I have a limited so I had to re-wire the drivers door. Even the coolant level sensor still works. A/C blows pretty cold too. Original Infinity Amp still there but it's got a new deck. Did you get a V-8?
jamesdewer thanks!
Nice video
Maybe I need this information
In the future
Thanks
Thanks for the video. What is the device you use for reading the codes on the engine?
This amzn.to/2iyUYrL and this goo.gl/FnsRK
You can retrieve the codes by turning the ignition key Off, On four times in succession. The codes will be appear on the odometer display.
You can clear the codes by disconnecting the negative battery terminal for five minutes, or remove the 10A fuse to the ECM.
My jeep is bucking, when I am driving it doesn't have the same power it used to have.It doesn't shift as smoothly and it hesitates to get into gear. Can you help me please.
Very informative. Thank you
Great Video...thank you! Big help.
Hey dude the vacuum hose on the box that says v8 where does that go I can't find it on mine
Would that cause hesitation when pressing the gas?
Dirty throttle body, dirty fuel filter.
i did my spark plugs a while back and i couldnt get the furthest 2 in the back out not enough leverage idk if you need a puller or not you seemed to pop em right out pretty easy
You talking about the coils or spark plugs? The coils are stuck to the ceramic on the plugs. Wiggle them and pull up, the will come out. This happened to my #1 cylinder. The 'pros' at the garage didn't apply silicone grease to the boot, four years earlier. Always apply a dab of grease to the inside of the coil boot.
@@WoodgemanX probably the coil packs it was almost a decade ago lol
Great job!! very helpful ..
I notice your temperature gage is not moving, is it cold outside? My 01 JC had the same problem, changed the crankshaft sensor, cleaned the IAC valve (based in your other video), still the same. It seems like the temperature sensor was at fault, changed it and so far so good. No idling.
duh nm, i saw you rgage at the end.... So was that the solution?
this was the solution, changing out all these parts
If you can't tell by WATCHING the video that this is a V8 and CLEARLY not a 6-cyl, you probably should NOT be working on your vehicle...
Did your fuel mileage increase? And what was it? I'm getting close to 10 1/2 per gallon. I have not changed the plugs. The jeep was abandoned for about a year. I've done other work but not replace the plugs. I get that erratic rpm drop every once in a while like maybe once a month. Also I hear a tic tic tic tic sound but not from the engine but from the driver side like in front of the brake fluid reservoir. What is it? Tks for your reply. BTW I bought my 99 WJ limited for 330.00 $ with a set of stud tires included.
tic tic tic -broken exhaust manifold bolts
Is there much of difference working on a grand cherokee 1999 V6 and the V8?
I have the V6 4.0 motor version of the 1999 grand cherokee and I'm planning to tune it up
thanks
you know.. I'm not really sure I haven't taken a look under the hood of a V6
funny… thanks anyway i went to cherokkeforum.com
good video next time just use a helmet cam they work better while filming you know
The 4.0L engine is a straight six not a V6 so it's much different than the V8. It is much easier to work on though.
helpful video man
Nice well done video....
Great Video thanks!
My jeep starts cutting out a little once i get up to around 50mph
maybe i need to do this to my jeep because it needs a new o2 sensor it idles rough and my gas smells unburned but im not that good at diagnosing things on my car but as of right now it gets 9 miles to a gallon
definitely do it I did and it went from 10mph to 16.5 in a week
lilpandasdancin jeep
Do you still have this Jeep? If so how many miles does it have now?
Nope this one was a lemon, it had so many problems, when the transmission problems started I got rid of it asap. I got another Grand cherokee 2007 V8 which is running a lot better and with way less problems.
@@link375 yea same with mine I have the torque converter code on my jeep
I'll be making more videos on the new jeep now that I have a new camera
I had the same problem i changed the air position sensor and it was good to GO!
What is an air position sensor?
Why would you use ngk? Champion is closest to oe. Ngk is most commonly for foreign cars. Champion for chrysler , motorcaft for ford, acdelco for just about anything, and if you want to amp your engine up use bosch, polstar, accel. Anything but Ngk for a v8. With the exception of the laser platinum racing plugs.
Me gustaría ver éste video en español
Hope you got the rag off the battery.
I had a misfire on cylinder 2 and 3.. I replaced my spark plugs.. all 6, and it was fine and started back up an hour later.. My car stopped keeping fire.. It would turn over and then stop after a sec of a catch. Im trying to replace my coil pack, but its not seperate its one whole unit. Broke the damn clip.. cant get it to come out.. HELP plz..
Shaniece Ricks Ok see yours is individuals. I have a complete unit on the left side of my motor..
Ok thank you kindly👌
the link for the fuel pump yields this result '"Does not sell outside the US."
Which engine is this ? Doesn't look like the 4.0 inline 6...I spent 2 minutes watching you fondle the tools that we all know are needed. If someone doesn't, perhaps they need to go to a shop..Be Cl;ear..about more than socket mm sizes and
Thank you very much. My light came on and told me it was cylinder #5. I took a flashlight out to the car and...... could not find the spark plugs. Heck I could not even find the distributor cap or wires. MAN I FEEL OLD. Now I know where they are hiding everything. Thanks again.
Lancaster PA
just to say on the 4.7 HO (not in the standard 4.7 in this video nor the 4.0 which can use many plug cros - variations) ';
wjjeeps.com/service/sparkplugs.htm strongly insist the factory plug or the single champion cross-ref 3340 (much cheaper) ---that wrong plug could result in serious engine damage on HO. Just thought i would throw it out there. no reason to risk it and they are not that expensive
Como puedo cambiar bujías jeep grancherokee 2000 8 cilindros
I just replaced the spark plugs and coil on my '01 Jeep Grand Cherokee . (4.0 inline 6 motor ) still runs like shit and stalls out. Next I'm going to try replacing the fuel injectors and fuel filter.
+Jason Phillips check the ecm wires and connector check for a faulty ecm before you replace undeeded parts the ecm was famous for causing jeeps to stall out the computers go bad frequently i had this happen in my jeep do you have any codes heres a test locate the computer with engine on jiggel all 3 cables not to hard if the engine trys to stall the ecm or wiring is bad as far as running rough do you have a code on computer.
+SuperJeremi10 True! I never had to replace the ECM but I did have to replace the TCM which was causing all sorts of problems on my jeep.
jeeps are great cars but they are very temperamental at times i love mine even though its high on maintenance sometime so far it hasn't left me stranded i plane to keep running mine till the engine quits.
right now mine is running a little rough it acts like it needs new plugs and you can tell from the tail pip its running a bit rich but i have no check engine light it just passed inspection as is so im just going to drive it till i can afford to fix it ive got to put new breaks on they are squealing really bad.
+SuperJeremi10 Good luck! this is around the time of the year when I ran into all the issues you see I've covered on the videos.
Why did you just target the four corners of the V8 to change the coil packs on? I think you said you got one P0301, which would be the #1 plug/coil but why the other 3 corners? Thanks in advance, good video, get a helper for the camera next time and you could fly through the repair! Good job with one hand tho… talent! Clay
okay, just heard your reasoning… was budget based which I totally understand. Take care, C
Guy likes blowing money on unneeded parts. The TPS and O2 have nothing to do with his problem. I had the same issue five years ago and just replaced the #1 plug and coil. Recently had a P0303 and replaced all the plugs because the previous owner had replaced the #3 plug with a standard copper plug, the other seven were Bosch Double Platinums. A week four days later got P0355, replaced the coil with the #7 cylinder coil(it showed a little heat discoloration. and put a new Denso coil in #7. It gets a little hotter in the back the engine near the firewall.
At 220K I'm splurging and am going to replace the other seven coils. Found OEM Denso coils online for $16.99 each, half the price NAPA is charging.
How was your gas mileage after the repairs were made?
I have had 16 - 17 mpg around town.
my doesnt crank over it just spinnning
need to title v8 so others dont get confused when clicking on the video
Done
I don't see a follow up video that says all you really needed to do was replace the O2 sensor..
the link for the coil is for six cylinder engine
a dollar for a spark plug, I have the 4.7 ho, my plugs are 11 dollars each
then you got ripped off...
link375 actually no, mine is the 4.7 HO, I use titanium tip plugs for better spark,but you must be in the States, here in Canada car parts are a lot more expensive, that's why I usually buy my parts south of the border, about 55-60% cheaper
David Vidal titanium? I have 4.7ho I thought it was platinum tips?
I just have to know....cuz it's been killing me....how long did you drive around with the rag sitting on the battery?? Lol...bet that woulda caused a brown stain in the ol pants if it'd gotten sucked down into the belt on the road.
lol for a while I figured it wouldn't fall due to pressure from the hood, I only put it there because I had to make my own battery holder and my battery was sitting up a little too high and sometimes it would touch the hood and short
Now that I know how to change the coils... I just need to figure out which one is cylinder 2~
+Luwinkle www.fixya.com/cars/t10998607-need_firing_order_placement_first_wire
Yeah I found it
You have no business working on your vehicle, if you don't grasp this basic knowledge.
should also share that this is a V8 and NOT a straight 6...
"99 - 04 Jeep Grand Cherokee V8"
It is clearly shown in the video to be a V8...wow
Search terms! If I had seen V8 in the title. I wouldn't have wasted my time with the video. I had to watch the video and recognize the motor to be a V8 to know that.
Wow. The thumbnail clearly shows a V8.
Sorry you had to watch it several times to figure it out....LMAO
EDIT OUT THE POLLUTION SCENES..THE TAIL PIPE BLOWIN' SMOKE...
dude, there is snow on the ground, it is probably cold as hell there, that is water vapor most likely
Throwing parts at a problem willy-nilly, not a good idea. Better off replacing the coils in the back, it's hotter in the rear of the engine. Dollar plugs! Talk about cheaping out, but getting overpriced Mopar coils and TPS, Crown O2 sensor! Dude you have no clue, should have gotten the Denso OEM.
The rough idle could be caused by a dirty throttle body butterfly plate. Good time to clean it with the air box removed.
Get locking extensions for the sparkplug socket.
Very helpful. I have an 02 with horrible gas mileage and I'm %100 positive this will work. Also it's been sitting fir 2 months from overheating and lack of money to get it fixed. I have the money now. What would you recommend?
if it's overheating I would suggest you check the thermostat, and make sure there are no coolant leaks, also make sure the radiator is working properly
might try a coolant flush… plenty of video’s here on RUclips
thanks for the video . very helpful,
Very nicely done!!
Thanks for the video!