alboy91lx

Ok so i got an obd1 scanner to check my 92 mustang... i got...33=egrvalve position sensor or pressure feedback egr (pfe) sensoor indicates egr valve not opening or seating properly...167= tp sensor- insufficent singnal voltage change during dynamic resonse test... 172=heated exhaust gas oxygen sensor voltage singnal indicates lean bank #1... 186=injector pulsewidth higher than expected or mass air fllow sensor signal voltage lower than expected... 223=dis problem- loss if duak opluginhibit control... 224=dis problem primary circuit failure in coil #1,2,3, or 4...


I hate my car right know...
any input guys? what should i do?

dreamer1uk

Hi,

Code 223/224 -is usually a sign of a bad ICM.
Code 33 - Check the functionality of your EGR valve. Have you tried cleaning it?
Code 172 - Might be a vacuum leak.

I would start with a tune up and even clean your MAF with the proper cleaner. The trouble codes seem to be maintenance related, except for 223/224 where you will need to replace your ICM. There is also autoparts store that can test ICM too.

alboy91lx

were is the icm?

sleeper_inc

Ignition Control Modual.

167 - TPS -> you could have forgotten to "goose" the throttle during the test (if test was KOER) or a TPS needing adjustment/replacment (KOEO)

172 - o2 sensor -> System was/is lean - Could be a plugged fuel line/injector or a bad o2 which has kicked your computer into limp mode

186 - MAF/injector issue -> Either a bad injector (relate back to the one above) or a dirty MAF (also look above)

223 - ICM -> sign of failure on the near future. Replace or wait till it fails (dose your RPM needle not read or read low?)

224 - Coil Failure -> coil has failed or is not connected. Try switching coils or unplugging one then the other to see which one is dead.

33 - EGR -> Didn't open - clean or replace

dreamer1uk

Codes 223/224 both cleared up on mine when i repalced the ICM. As for its location, its by the Intake Manifold. If you still cant find it, ill post a pic of mine later.

alboy91lx

the 167 one should of never came up? i did the key on test without it running? Last night i cleaned the maf... the icm? isnt that the dis thing on the side of the intake? ill switch coils today and see if one is dead... and i replaced egr last night... seems to run alittle better... the day before it was acting like i had no power... id have it wot and the car would lag then it would go back to normal and still be slow but had more power...

sleeper_inc

Its out of adjustment or needs replacing if the engine wasn't running (KOEO) but it would have been fine if it came on in the KOER test (Key On Engine Running)(Key On Engine Off)