Hello and NEED HELP in OHIO
In several years no one has figured this car out , it is a 1997 Chrysler LHS with 3.5 L motor that idles too HIGH when it starts above 2 rpms and higher , it races , sounds like it might blow up idling too FAST . Years ago with a carberator motor you could rev the motor by stepping on the pedal to change carberator setting and hope it to idle down soon…well this car is not going to idle down with out something fixed. …can you help?
When I first bought this car second hand it seemed to idle - ( too slow when in gear at traffic light ) . So, my father and I decided we would idle IT UP…little did we know NOT to mess with thoses screws when sealed from the factory and now we know why. My Father passed away since so have been trying to get help with car for years since. No dealer has figured it out, just charges me a lot of money for incorrect answers. We took the metal cap off of screws on throttle bodies ( dual on that car) and turned them up and counted the turns so we could put it back if needed too. Well, when we idled it up it idled ok until we shut the car off . Then we went to restart the car it idled ( TOO HIGH ALL the time). We unhooked the battery and tried everything to rest it etc. and then We tried to put screws back down to original position but it STILL idles TOO HIGH and races when it is started and never idles down. So nothing we did ever changed it. When car starts it starts above 2 and half rpms and sometimes almost 3 rpms. If I put a load on motor like A/C on fan etc. it helps idle it down a little. Goes down the road at 35 mph with foot off accelerator and hard on brakes.
Question is since I have tried everything by replacing it on car and it did not help and am out of ideas and money can you help? I replaced TPS sensor and every other sensor by throttle body and even replaced the fuel pressure reulator and intake manifold because dealer told me it must leaking air etc. and you can smeel too much gas ( but never see it) . When you open hood you can always smell gas if you are starting the car BUT YOU NEVER see any gas leaking anywhere… I am to the point of thinking it has to be one of the following things…
- replace the dual throttle bodies because we messed with the original settings ( and I have cleaned them too ( the inner flaps) thinking they might have carbon build up keeping them from closing enough and even checked the accelerator out to see if it was binding up for it feels like the pedal needs to come back farther) but that is not it either. So thinking we need a working junk yard new throttle body …or …
- replace BOTH the throttle bodies ( dual) and the PLENEM because we messed with the original screw settings …from a junk yard that was working correctly. To eliminate wonderig if the whole thing is messed up now…? or…
- Replace the computer… ( maybe we messed it up by changing the screw setting to where they can never read correctly)?? Something sure has been a problem all these years because we changed the original screw settings even though we put the screws back in same place later. We disconnected the battery several times for even several hours thinking we needed to reset the computer that way???
CAN YOU GUYS HELP ME…OUT OF CASH AND IDEAS in OHIO…PLEASE HELP!
Thank you ,