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Idle problem
- Thread starter Big James
- Start date
Could be lots of things just based on some quick googling...
TPS, air intake hose pinched, clogged catalytic, fuel pressure/pump, among other things
Does it have any codes? I'm sure some detail on the behavior when trying to rev past 1k would help people narrow down to at least mechanical/electrical possibilities.
TPS, air intake hose pinched, clogged catalytic, fuel pressure/pump, among other things
Does it have any codes? I'm sure some detail on the behavior when trying to rev past 1k would help people narrow down to at least mechanical/electrical possibilities.
Jesse_Hallum
NAXJA Forum User
- Location
- Here
What part of this purchase constitutes a "good deal?".
Please enlighten me with protracted reasoning and logic.
Please enlighten me with protracted reasoning and logic.
- Location
- Minneapolis, MN
Good deals are where you buy a non-runner for $800, spend 2 hours to diagnose a broken wire and a failed relay, and you sell it for $3750 4 days later.
I would start with basic diagnostics and poking around under the hood. Test the fuel pressure. Look for loose or broken stuff and melted wire harnesses. Look for disconnected stuff. Make the throttle cable and gas pedal function correctly. Make sure the throttle body is mechanically sound and functional. Test the various sensors and inspect/test their wire harnesses. During an engine swap it is pretty easy to damage a wire harness, a sensor, or to have a weak wire splice fail.
I would start with basic diagnostics and poking around under the hood. Test the fuel pressure. Look for loose or broken stuff and melted wire harnesses. Look for disconnected stuff. Make the throttle cable and gas pedal function correctly. Make sure the throttle body is mechanically sound and functional. Test the various sensors and inspect/test their wire harnesses. During an engine swap it is pretty easy to damage a wire harness, a sensor, or to have a weak wire splice fail.
Good deal consists of new motor in a $1000 dollar jeep where the 1000 rpm rev is the only problem
The jeep isn't actually mine and I haven't been to look at it yet to get to check out the engine bay really good
- Location
- MilkyWay Galaxy
Bad TPS (test with power off using an ohm meter sweep, from idle to WOT versus FSM specs, too little fuel (check the fuel pressure while running with a gauge), clogged cat (check the cat while cold for any loose internals noise using a rubber hammer and soft taps, or have a muffler shop test it), bad CPS, bad vacuum line to the MAP sensor or a bad MAP sensor, weak spark, check the entire spark system from the plug to the coil.
Thanks Eco. I'll look into all of that if I make it over to look at it. I've found another one that just needs a motor stuck in it
- Location
- MilkyWay Galaxy
LOL, I'd take fixing an idle problem, over needing to install a motor any day. With jeeps you are likely to install a motor and be right back here with 6 new problems instead of just one LOL.
W1zardofozz
NAXJA Forum User
- Location
- North Carolina
What's up dude! I fixed my idle btw.
Anyways, I agree here. I was having a relatively similar issue, for me it ended up being a short in the TPS and a bad Auto Shutdown relay. Cat is also a fairly common issue.
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They're the same price and the one that needs a motor is nicer than the other. It needs a windshield too but that's no big deal
- Location
- MilkyWay Galaxy
Years? Miles? Price? You have no idea what other problems the one with the bad motor has.
- Location
- MilkyWay Galaxy
TPS or TPS wiring?
W1zardofozz
NAXJA Forum User
- Location
- North Carolina
1999, 187,xxx, $1800 that's the one with the bad motor.
1998, 271,xxx, $1800 that is the one with the new motor
