Jeep XJ - Rough Idle & Stalling Issues? Clean the Throttle Body & Test the TPS Sensor
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- čas přidán 27. 08. 2024
- Our 1999 Jeep Cherokee XJ recently started having a rough idle issues that would often stall the jeep and give us a P1391 error code. We begin looking into fixing the issue by giving the Throttle Body & Idle Air Controller (IAC) a deep clean and test the voltage of our Throttle Position Sensor (TPS) with a multimeter while we were at it.
#offroading #offroad #jeep #jeepxj #rockcrawling #DIY #throttlebody #jeeprepair #multimeter #P1391 #jeepcherokee #jeepcherokeexj
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He is so cute, great to see father and son fixing the jeep🙏
Thank you!
Not only was this video incredibly informative while I chase down my rough idle and cylinder 3 & 4 misfire due to heat soak, watching your interactions with your son made my night. Great stuff, I look forward to more informative XJ repairs from you and your son!
Thank you! Working on the XJ with the little guy has been a lot of fun.
Kid knows his stuff
Yep, Preston is totally a gearhead!
What a handsome little man Preston!! Great cleaning too!!
Thank you!! 😊
Good, concise, informative, and nicely edited. I love the overlays you put on there, because as a beginner, I have no idea what I am looking at when looking at my XJ's engine bay LOL. Learned something new. My XJ has been having a rough start to the point where I had to pump the accelerator for it to even start. But today, it started, stalled, then never was able to start back up. Starter still turns over though. Looks like I am gonna be cleaning the Throttle Body of my '98 XJ.
Thanks! Trouble shooting anything in the engine bay can be a daunting task for sure - especially when a "symptom" can have multiple potential culprits. Fingers crossed a cleaning does the trick for you. If not, you may want to check the TPS sensor too.
If you have a friend with a lathe, i suggest doing an intake manifold match to the throttle body. The bottom of the TB is about 55mm give or take, and the IM is roughly 61.5 to 62.25mm.
I bored mine to just below the butterfly on the short side and the idle is significantly smoother, and a snappier throttle response.
Happy new years to you both!
Happy New Years! I'll need to ask around about a metal lathe, but that's good info. Thanks!
Right on, thanks. Using mom's toothbrush was the key ;)
Hahaha yeah the toothbrush is where it’s at!
Happy New Year Preston! Looking forward to a great 2023 with you fellows. I experienced the same thing with my 88 back in the summer and it was crazy how dirty the IAC was. I like your Jeep hat Preston. Be sure to keep your dad in line. Thanks for the video!
Thanks and Happy new year! Preston does love his hats.
Another fine job by the father son team and another great suggestion by Paton!
Thanks!
you both are amazing, love the videos, great work!
Thanks so much!
If ur still having issues i just did my fuel injectors and IAT the IAT is very important as well most people over look that part
We’re still running well at the moment but that’s good info to know. Thanks!
Thanks going to replace IAC tomorrow in WJ 4L
Thanks and good luck with your WJ!
Really enjoyed your video your lucky to have a great helper 😀👍
Thanks 👍 yeah he is pretty great. Helps keep me on track too
great team
Thanks!
You gained a new subscriber. I’ve only seen a few of your vids. I like how you keep Preston involved with being able to see what you are doing through the camera and phone. He has caught you making mistakes. 😊 He has a eagle eye and actually comes up with good suggestions and questions. That’s great that you spend that kind of quality time with him and you have the patience of a saint. If you don’t mind my asking, what kind of condition does he have? I have a ‘93 Jeep Cherokee Sport 2dr so I like the play by play I fo you put out. Keep up the good work and awesome family time.
Thanks! Preston definitely has an eagle eye for sure and keeps me in line for sure.
Preston has a genetic disorder called Duchenne Muscular Dystrophy. Here is a link that does a really good job explaining what it is, but basically the disease slowly weakens his muscles over time.
www.parentprojectmd.org/about-duchenne/#
@@sandbox_adventures thanks for the feed back. God bless you all. Keep him involved. It does this kind wonders. 👍
You guys are good mechanics. Nice job 👍👍
Thanks 👍 not sure we’re good mechanics yet but we try 😃
super cute, getting the job done with your son.
Thank you!
Going to do this tomorrow. My jeep is stalling, rough idling and I swapped out the TPS SENSOR and it was running fine for a few days, up until today. Bought a new IAC sensor, replaced it and it is still doing the same thing. Wanting to stall and high RPMs. Cleaned what I could since it got dark and I have to be up at 4AM for work lol but thank you for this.
Hopefully that’ll do the trick for you! Our issue ultimately ended up being the CPS sensor. Good luck!
@@sandbox_adventures so I did all of it. Removed and cleaned the Throttle body. Replaced the gasket. Replaced the TPS, IAC sensor and cleaned the MAF sensor. Going to try the CPS now 🥲😂 thank you for the response and keep up the great videos! You guys rock!
@@sandbox_adventures
Hey brother! Hope you guys are doing well. So I took the CPS off. There’s no serial number on it… obviously aftermarket lol. OEM parts only right? Mopar?
Doing great, thanks! working on getting a new rear bumper installed.
So we tried ordering a Mopar CPS but the shipment kept being pushed back week after week- may have been a Covid supply chain related 🤷♂️. We ended up using Duralast from Autozone because I grew impatient and Preston wanted to go to the off-road park. But yes, id go Mopar if you can find one because the aftermarket ones tend to have quality control issues.
@@djBeni93hey man did you ever resolve your issue? I’m having the same problem now.
Great video thanks for the tips!!
Thanks and we hope they help!
You guys rock thanks for the great video
Thanks!
Good job. Glad Link and Preston was there to guard your boots and to help you. Did you recheck the TPS after you attempted to remove it? From my experience on my MJ 4.0, it doesn't take much to get it out of adjustment.
Hahaha thanks! No, we didn’t recheck it afterwards. Seems to be running good still, but I’ll keep that in mind if we start to have issues again down the road.
I have the same jeep. Same color and everything. My dad left it for me when he passed away. He replaced alot of stuff in it. I've replaced alot of stuff in it. It's always something new but I don't mind. I just did some rust repair on it and painted the rockers. She looks nice. Get along of complements. Wasn't sure about that gold color a d matching gold wheels when he first bought it but it's really grown on me and I've put some nice bfgs all terrains on, painted rockers and fender flares and black trim. Dad would be so excited to see now. Replaced alot of things mechanical. Most on my own. That's the cool part of these xjs. They're almost easy to work on lol. Took me five minutes to put new head lights in. My 96 f150 took me like 7 hours lol. Love the simplicity and nimbleness of the xj. Plus I get a stupid amount of compliments on it it's ridiculous. I'm really getting to be a huge fan of the xj. I see exactly why dad owned 4 of them. They're the greatest suv ever imo
My condolences about your dad. Agreed, XJs really are a great platform to work on and play with. We’ve been learning a ton working on ours. Preston totally wants to switch up all the flares, trim pieces etc to black too lol
Good video
Thanks!
Dude sounds like Pauly Shore
Thanks… I think lol
how did you repair the wire after stabbing it
The multi meter prong should be able to get a reading without actually puncturing the protective wire coating. But if it did, I’d use some electrical tape to cover it. If the wire somehow got really damage (very unlikely really), I’d splice it with a solder stick connection.
Oh by cleaning your carburetor would it help the RPM?
I haven’t personally owned or worked on a car with a carburetor, but I imagine better air flow from cleaning the carb would lead to a better fuel mixture and possibly affect your RPMs. Good luck!
Hi I’m having some random stalling on my Jeep , when I’m at stops it idles low once I press on it’s a rough acceleration any ideas on problem?
Could be a few different things u fortunately. We had similar issues and started with checking the throttle body and TPS and then moved on to replacing the crankshaft position sensor which solved our problem. If that didn’t work, our next option would have been the cam shaft position sensor. Hope that helps. Good luck!
Can Anyone help! My 01 Jeep Cherokee just stopped running before pulling out of drive-thru. No engine light or overheating gauges came on. After waiting 30 mins...started again with no engie lights coming on. Your comments please.
Would it turn over and start at all prior to waiting 30min?
What color xj is that?
Desert Sand Pearl per the original window sticker in the glove box. That’s actually how we came up with the name Sandbox for the Jeep - the sand color and because XJs are box shaped.
Rumanian plate on the wall, RO.😅
Good eye! I lived in Romania for a couple years while they joined the EU. I hear the RO plates are hard to find now adays.
My 2002 Kia Sportage was the same thing, IAC, but I also had a cracked exhaust manifold. Now it runs better. Also your e-mail address in the about section doesn't work. Do you have a different one?
God Bless
Whoops! Looks like I had a typo in the email address. Thanks for brining that to my attention. It's corrected now in the "about" section.
Wow my jeep is not a rock crawler and it only gets 12 miles per gallon!!
It’s not lifted! It only has regular tires!!
12 mpg is rough for sure lol. We have a ford fiesta to help balance out the gas guzzler that is our Jeep.