Brenton35004 Posted March 21, 2017 Share Posted March 21, 2017 Hello, I have a 87 Comanche 2.5l base... I have been having trouble with the throttle. I start out and it's fine if I keep my foot on the gas (especially with some load) once I let off the gas a little it acts like it's starving for fuel or atleast dying.. I have to push the throttle down all the way and then it kicks back up and runs fine.. interstate driving is fine but in the city with all the stopping and speed limits, I'm not able to keep the throttle down, so it acts up. Please help! I have rebuilt the carb, replaced the throttle position sensor and the fuel filter... Link to comment Share on other sites More sharing options...
Jeep Driver Posted March 22, 2017 Share Posted March 22, 2017 Hello, I have a 87 Comanche 2.5l base... I have been having trouble with the throttle. I start out and it's fine if I keep my foot on the gas (especially with some load) once I let off the gas a little it acts like it's starving for fuel or atleast dying.. I have to push the throttle down all the way and then it kicks back up and runs fine.. interstate driving is fine but in the city with all the stopping and speed limits, I'm not able to keep the throttle down, so it acts up. Please help! I have rebuilt the carb, replaced the throttle position sensor and the fuel filter... You have a TBI, when you say you rebuilt the carb, what exactly did you do? Link to comment Share on other sites More sharing options...
Brenton35004 Posted March 22, 2017 Author Share Posted March 22, 2017 I took the carb apart and cleaned it all with carb cleaner. I bought a kit and replaced all the parts it came with. Some times the jeep doesn't act up but that's rare. It seems to stay a pretty constant problem. I was thinking, maybe it's the idler control and maybe that bar comes out and hits the throttle and causes a lower supply of fuel.. Iv unplugged it and drove it around but no change at all. It doesn't idle great.. won't stall out often but it's low. Link to comment Share on other sites More sharing options...
Jeep Driver Posted March 22, 2017 Share Posted March 22, 2017 My first impression was, and still is, a bad MAP or a bad/clogged line to the MAP. Otherwise, something went wrong when you took the TBI apart, or you have a fowled injector or regulator. I suggest you add a fuel pressure gauge. Also, the cheap TPSs could be bad out of the box, what did you replace it with? You'll want a MAP marked GM, General Motors. Link to comment Share on other sites More sharing options...
Brenton35004 Posted March 22, 2017 Author Share Posted March 22, 2017 Thanks! I will look at the lines and get a map. I'm not sure what type of TPS I got, it was one from AutoZone I believe. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now