I have a 1989 Cherokee 4.0L Manual transmission.
Here's some backstory:
Here's some backstory:
What gives?When I got my cherokee, its TPS was at 0.25 volts.
When I changed it up to 0.80 volts, the thing would start up and immedietley rev to 3000 RPM's.
So I changed it up by 0.05 a volt at a time, starting up engine each time, and slowly got it to 0.80 volts.
When driving, if I come to a stop, it'll idle at 1300 RPM's. If I unplug the TPS, it doesn't change. If I stop the engine and restart it, it goes back to 900 RPM's.
I changed the ground from the TPS to go right to the battery instead of the computer, and the exact same problems happend.
I put a different TPS I had laying around, in, and it has the same problems as before. Also, I noticed that the volts will not be the exact same at each time I start up the jeep. IE one time it might be 0.80 volts, next itll be 0.815 idling, then after revving it'll be 0.821, then shut it off itll be 0.805. Very confusing.
I changed the volts to 0.67, and now the engine revs up to 3000 RPM's each time it starts. If I unplug the TPS and start up the engine, it idles at 900.
Also, here's the ticker. If I put the TPS back to 0.25 volts, it runs good again. But that's obviously not good right? If it's supposed to be 0.80 volts and all. hm..
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