[Kevmustang83]

So. my 1986 tbird turbo coupe. I have replaced plugs, wires, cap, rotor and coil pack. valve cover gasket all gaskets on intake except for lower manifold, fuel injector o rings, cleaned TB and some other minor things(fuel filter, gas and seafoam). basically its still near impossible to start. it idles so bad now that i have to keep my foot on the gas to keep it above 1500 rpms or it will die. i've ran codes and i got a frigging passing 11. im really stumped as to why this car is running so rough. its not possible to drive b/c it idles so bad. im getting my repair manual tom. hopefully that may help. Please im very desperate for help.
Thank you,
Kevin

[carolinaLX]

Sounds like your IAC valve is either bad or dirty

[SM90Stanger]

The only thing that you didn't mention that showed up as a fix for the troubleshoot (misses at idle) in my haynes manual is that you may have a vacuum line not hooked up or it could be cracked line. hmmmmm? It's very interesting that it is giving you a code 11... It makes you wonder if the computer is even doing anything? Maybeeeeeee, it might be the computer?

Good luck,

Steve

[Kevmustang83]

Actually its interesting that u say vacuum line b/c my brake booster line seems loose and theres a bunch of fluid where the master cylinder meets the brake booster. hmm. but yea i looked over most of the lines and they are in pretty good/new condition. only thing i can think of now is if the alternator is bad or my fuel pump/regulator/dampener is bad. or fuel injectors

[Kevmustang83]

I checked the IAC, i pulled it off and the car died. soo i dont think its that, but it could be dirty.

[TOM RENZO]

Ok did you check the compression?? If not do it you may have a blown head gasket. If the compression is ok look for a vacuum leak. 2.3 turbo engines idle fairly smooth. Also check the timing with the spout out and set it at 10* BTDC. Also check your valve timing. I think you will find low compression on 2&3 just a guess. Post back with more info. Oh yes are the plug wires on the right plugs and timed properly. The firing order is 1-3-4-2 clockwise check it.

[Kevmustang83]

I did check for compression but the tool prob broke on me after the 2nd cylinder since it didnt read anything. i dont think its a blown head gasket. its more of a fuel problem imo. but yea the wires are correct and i dont think the timing is off. how do i check it anyway?

[Kevmustang83]

What would happen if my TPS sensor was bad?

[DBT4220]

if that was bad you'd have a hard time keeping it going.... like you are now. have you checked the voltage on it to see if its in specs?