any tips for cleaning the sensors? just use the crc electric parts cleaner or no

ok i changed the plugs and wires today and so far so good with the rough idle and stalling hasnt happened yet (knock on wood) but i reset the computer and still have hte tps and the coolant temp sensor code and about an hour after i stopped at my grandmas to bring her her mail came back out about 3 minutes later and the car had a tough time starting and when it did the whole car stunk inside of gas. what should i check next. the wiring all looked fine today i fallowed it all the way back to the firewall and there were no brakes or anything. Now is it possible the coolant temp sensor is defective and the tps got messed up when i pulled it off to clean it because it started raining when i put everything back together anda little rain could have gotten in the plug for the tps.

Take it to a garage, and have them scan it with thier tool. Not only will it tell them error codes, but it will also give them all the sensor voltage readings. Sounds like your problem is more serious than we can lead (or mis-lead) you here on the board.

The car smells like gas when idling because the computer is simulating a 1/2 throttle environment, becuase it isnt using the tps sensor. It beleives there is a problem with the tps, so it isolated the sensor out of the loop. Your fans being on all the time are due to the same problem.

From what you've told us, your computer is complaining because it is not seeing proper resistance on your temp sensor, and an incorrect voltage on your TPS sensor. There IS a reason why, but we cannot plainly see. This is where advanced troubleshooting comes into play, and over the internet, it is just not feasable. I dont know your level of expertise on the subject, so I am going to suggest:

Paying for a diagnosis will likely be cheaper than burning excess gas in open loop mode. Beleive me you are burning a lot of extra gas. It will get you to your goal a whole lot faster, and a lot less painfully.

Hi 88delta88, all,

Good post, I learned much from it.

Thanks, Norm

check your ignition module/coils..a cracked coil can do alot to the performance. as for the module..i could be that the ECM isnt reading the output its needs from the module to calulate fuel delivery and spark timing control and was giving codes that never exsisted or was relevent to the problem. Some say its pretty rare for the ECM to fail but mine did. the ECM is probably in open loop mode(default). There is a series of test you can do to test the module or the ECM. Going to a local parts store that would let you browse the mitchell for free is the key. i had the exact same problem..to the T..replaced module and computer..problem solved. find a cheap ECM but DO NOT use your CALPAK or PROM..its like a drunk getting a new liver from another drunk.

im just hoping its just the iac if its the computer ill have to go searching

because i got all my codes fixed and now it has no codes at all but when at lights about once a day the car will buck and then stall so im thinking the iac is sticking and causing it to get too much air. Also another reason i believe its getting too much air somewhere is that when i pulled my plugs and changed them they all looked like they had been run lean now the plugs i had before those when i ran them after 15k miles when i pulled them out they still looked brand new and when i pulled the last ones out after 3 or 4k miles they looked lean leading me to believe its getting too much air somewhere. Also the iac controls the ammount of air that can go past the throttle plate at idle if its getting too much the engine is going to send the ammount of gas it wants to at idle and its going to be getting too much air causing a lean condition. So im going up to the autozone today getting a new iac and hopefully that was the problem if not back to checking everything out again.

changed iac still no luck still stalling and rough idle now im clueless and so are 3 mechanics

Hey guys finally fixed the problem. I think it was a clogged fuel line or something clogged in the fuel system i ran a can of seafoam through the gas and it fixed it. The only reason i never checked the fuel system is because i had the injectors professionally cleaned. Btw seafoam is some great stuff.

Odd, but glad you were able to cure it. Seafoam is the best of the best from what I've heard. I saw it last week in the parts store. Maybe I'll give it a try next time I need a cleaning.

seafoam is definatly some good stuff

Good to hear you got it fixed.

it started again. ive been working with some people on bonneville club to see what i can turn up and their saying valve seals or lower intake gasket.

so, you ran sea foam, and the problem stopped for a while. Is it possible that you have a faulty injector? The sea foam maybe started to work the gunk loose inside the injector, and now its plugged again? Just a thought.

I dont even know how to test an injector without removing it from the vehicle... Anyone else out there know?

Well, if it is the fuel injectors, maybe have a fuel injector pulse detector (or whatever it's called, maybe 88Delta or 88Coupe could say) and see if everything a-ok. We did that on mine to diagnose a problem.