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Found 3 results

  1. We just replaced manifold gasket on nephews 2000 2.5 wrangler. Now it has intermittent high idle. If you blip throttle sometimes it snaps back to normal. Sometimes it takes its own sweet time or never returns to normal. We took out and cleaned the IAC valve. It was funky but didn’t change a thing. Don’t know what to try. We didn’t disconnect anything we didn’t Need to. I’m going back home in the morning so would like to solve soon.
  2. 88 4.0, auto. I tried some things to get my fuel gauge to work, mostly playing with ground wires and cleaning the big c101 connector above the brake master cylinder, and the engine started idling high, about 2k plus. I let it sit a few hours, came back and cleaned out the throttle body that wasn't dirty, shot some carb cleaner into the vacuum lines, removed and cleaned the TPS and idle switch. idles a little rough but it always has, Still stalls when I press the throttle. It doesn't die completely but it's damn close before it catches up and revs. When it was idling high it was doing the exact same thing it did when I ran it with the EGR disconnected and the port open. It sounded the same, there was an audible sucking sound from the engine bay. I have to suspect the EGR again. If I take off the intake and just have the throttle body open and I pull on the throttle cable, I can hear the EGR briefly, and then the revs pick up. EGR or something different?
  3. so i have an 87 manche 4.0 4wd with nv3550 that has been fairly reliable but has a high idle problem. when i first start it up it is good at only 1000 rpm but as it warms up the idle will drop down to 400-500 a few times until its finished warming up then it remains at 1000 constant. However once i begin to drive the idle at a stoplight is typically around 1600 way too high. Also i don't know if its related but it will occassionally stall on me but I have made no relations as to what happens the stalling seems to be a very random and intermittent problem. Any thoughts on what should be tested or what direction to move in first?
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