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i have thought about putting one on there. Maybe in the future, but mainly trying to trace down if there is anything i need to fix prior to putting my 16 yo in this jeep as his daily commuter.

I would like to agree, and hope you are right. I just feel like the idle being low, causes a slight vibration and rattle in some of the interior plastics when it drops down. I will agree, nothing seems glaringly wrong. Last night we pulled apart everything on the EVAP system, removed and...

I would like to agree, and hope you are right. I just feel like the idle being low, causes a slight vibration and rattle in some of the interior plastics when it drops down. I will agree, nothing seems glaringly wrong. Last night we pulled apart everything on the EVAP system, removed and...

ok i did find this reading the Service Manual. The regulator is calibrated to maintain fuel system operating pressure of approximately 339 ± 34 kPa (49.2 ± 5 psi) at the fuel injectors. so maybe it is good?

I have been chasing a low idle issue, and well I have been around the block a few times. Great thread on here looking for vacuum leaks and fuel trims diagnosis. Well it still does it, and now I have made it all the way to testing the fuel pump, thinking maybe it is weak and that is accentuated...

Ok. so before i put the jeep back together, so i could move it, i smoked it again. It pours out of both sides of the butterfly shaft on the throttle body. comes out a little of the breather tube in the valve cover vent, so will likely get that as well. But looking at my fuel trims from...

So the throttle body base gasket was a new fel-pro gasket. then i RTV'd both sides, i know, trying to make sure no leak. but it still looks to leak from there. Honestly it is hard to tell as it is coming from all around the throttle body. The return spring, out of the relief at the bottom of...

Yes I have smoke at the return spring as well as the sensors. And maybe the base. Just wondering if it is common or maybe my problem. I have a vacuum leak somewhere that is causing it to dump more fuel at idle.

Ok. Worked on the jeep a little this weekend. Smoked it really good. Found one bad evap boot, replaced. Seems to leak a lot at the throttle body I tried RTV where I could, but no help. Is the throttle body supposed to leak some smoke? Coming from around the butterfly spring area and out...

i have tried several. it is back on the factory Mopar one now. I ordered some off Amazon, but all came in really beat up packaging, and never made a difference. Didn't know if i should try to order straight from Mopar for better results. I appreciate the write up. and glad nothing seems...

I paid close attention to this question when i drove tonight. once you come to a complete stop it will sometimes idle at the 650prm range. never much up in the 670's, maybe bounces around it some. but alot in 650-660 range. Sometimes it will drop down into the 560-570rpm range. if i shift to...

this was park at idle.

Ok. so had some time to tinker this weekend. seem to have exhaust leaks at band clamps sealed for now. Maybe still a small one at the manifold to cats, but small. I did a smoke test on the intake and the Evap. Good thing, the smoke tester worked. bad thing, i didnt find anything. found a super...

What is the best way to reset the PCM? Just unhook the battery for an extended period of time? Touch unhooked leads to each other?

Yes at one point I did have the battery completely disconnected for an extended period. Last IAC change it did idle up and settle back down. I worked on sealing up exhaust leaks today. Doubt that is the cause, but was on the list. Did not get to smoke test today. Hope it is a pesky vacuum...

I notice it more when you are driving and come to a complete stop. where the vehicle rest back. California rolls it doesnt drop down. It also has to be warm, after driving for a while. if you just start it up and take off driving it will not do it initially. I got a smoke machine to test for...

I will have to get drive at idle another day after driving it some. Idle in park is the first screen shots. So in the 7s. Second screenshots shots are 1500ish rpm in park.

Here are the Fuel Trims at 1500 or so RPMs.

No real change in the rpm’s when shifting from D to N while at a resting stop. Some change but felt more like pump engaging and disengaging. Rpm’s fluctuate when I watch it on the OBD screen. Small fluctuations, but 10-15 up and down. Will get screen shots of fuel trims at higher RPMs on the...