Jeep YJ (Wrangler) Super Tune Up | Get that perfect pep & idle

Replacing the IAC, IAT, MAP, TPS, 02 sensors. Tune your jeep up for $300 the right way and never worry about bad idle, misfires, sputtering or hesitations.

[Giovanix]

I changed all the sensors in my jeep today . It purrs like a cat to . Check engine light when off . It doesn't idle high and low no more . It runs so much better . Thanks for the vid

[jorgebarcia]

Great video man, THANK YOU! I have a YJ 87, it is missing a lot of staff, previous owner did not care. I'm trying to bring it back to life, this video will help.

[geow.]

I have a '95 YJ. Had been having issues with intermittent high idle depending on ambient temperature outside. Would start in the mid 80's at about 1100-1200 RPM, up to 1800 RPM once it hit the mid 90's and up. Another mechanic finally figured out that the computer wasn't relearning the IAC Valve after it was replaced (it was bad). He had to use a computer to take control of the IAC and adjust it correctly because the computer wouldn't. Had the problem for 10 years. SO happy it's fixed- FINALLY!

[jerrymestas]

I just did my cap and rotor with new wires, also put in a new fuel filter on my 1991 YJ. Finally got it running after 11 years of sitting. I will now be doing the senors for sure. Thank you👊🏻

[FunWithAJ]

Extremely helpful video. This is the main reason I want a YJ. Extremely easy to wrench on and mod.

[paulpavon]

I have to thank you big time! Am no mechanic by any means, but this has been the best explained /detailed video on how to I’ve come across. Followed instructions to the T! Thanks!

[oilyspanner]

I live in the U.K. and i have a yj 2.5, have owned this motor for about 4 years and i absolutely love the old bird, dont see many YJs over here and in summer it is the most fun car on the road with the roof off and doors off she turns heads where ever she goes, i believe that every one should own a YJ at least once in their lives, she is 24 yrs old and when cleaned up she looks as good as when new, bright red and loads of chrome, thanks for reading and hope i didnt bore you .

[aaroninbliss]

good advice. Dont forget crank sensor, classic point of failure.

[mr.thomas]

Absolutely top notch, valuable video. 94 yj 4 inch lift.

[roymichael]

Dude - THANK YOU, for this video, this is a HUGE help to us newbies, great shots of the parts and names and excellent views of the install, thanks again brother....

[zanehopefzhundred]

Dude God has blessed me with you're video. Thank you Sir. My jeep has they absolutely worst surging idol and when I put my clutch in she dies out and is very very dangerous. Tomorrow morning I'm defiantly I'm cleaning my IAC and my Butterfly. Thank you so damn much.

[MichaelMassimino]

GREAT video, thanks! I'm about to get a 93 YJ, first thing I'm doing is new rotor, cap, plugs, wires and sensors

[eldenswordable]

Great vid! Thanks for sharing - One thing I'd add is for long-distance Jeepers 87-95 w/EFI 4.0's - Keep a spare CPS (Crank Position Sensor) in your gear bag. Either that or keep some de-greaser on hand and keep it clean. The magnet gets gunked up and dirty, throwing the timing way out and you may not be able to fire it up - It happened to me. Happy Jeeping!

[kattmarielimpus]

i’m doing all this now instead of just my IAC 👍

[cleavland]

Changing sensors after a period of time is wise-preventative maitenance. I had a vehicle with 150k, changed each sensor as cash allowed and most of them made subtle differences in engine operation. Taken together it makes a nice improvement.

I pulled apart my TPS (the original) and the wires inside had a lot of white corrosion on them. Given that its job is to send a signal back to the computer to manage overall operation its important to have a clean signal. Corrosion will affect resistance and in turn send a weaker signal back to the computer. Changing the TPS made the single largest sensor improvement as far as "seat of the pants" go.

[mark]

Thanks for posting this sensor vid. I have 1997 Jeep XJ Sport that has been having some issues even after having the engine rebuilt. I'm going to replace the sensors, plugs, cap & rotor and I hope that will make a 100% improvement. The 4.0 I-6 is the workhorse of Jeep's and I know I can improve its performance with simple maintenance. Thanks!

[GeorgeMarrero]

This is perfect! Just picked up a 95 YJ and will be doing this soon.

[SeriouslyAwesome]

I had to look up the song at the end. That's a great vibe

[Yelladog]

NGK/NTK was the OEM provider for the sensors on these & and I've learned the hard way to spend the money and buy them when available. Standard motor products are okay for a second choice

[KARABOUDJANUNO]

Thank you for this video, my 95 2.5 L loves it too.