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Jeff Chambers · 01-30-2005, 08:12 AM

The first set in KOEO basically says that there are some stored codes dealing with the EGR, EVP and ECT that were noted and stored by the computer at some point. The 10 and 11 are at the end of the test and basically say that everything is working well. The stored code problems must have fixed themselves at some point.

All the codes in the KOER portion of the test deal with the majority of your major PCM sensors. Was the engine up to temperature? It appears that you didn't perform the WOT test? There are signs that the IAC and EGR didn't function and both of these will contribute to poor idle quality.

I would clear the codes, unplug the battery to reset the computer, and drive the car for 30-minutes then immediately re-run the tests per the instructions. Then attack each problem code one at a time, clearing the codes and re-running the tests one at a time. Use a systematic approach so that you're reducing your variables and you should be able to solve the problems yourself. There's nothing really magical about working with the EEC-IV.

01-30-2005, 08:12 AM	#2
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Tuning Issues, I am out of ideas The first set in KOEO basically says that there are some stored codes dealing with the EGR, EVP and ECT that were noted and stored by the computer at some point. The 10 and 11 are at the end of the test and basically say that everything is working well. The stored code problems must have fixed themselves at some point. All the codes in the KOER portion of the test deal with the majority of your major PCM sensors. Was the engine up to temperature? It appears that you didn't perform the WOT test? There are signs that the IAC and EGR didn't function and both of these will contribute to poor idle quality. I would clear the codes, unplug the battery to reset the computer, and drive the car for 30-minutes then immediately re-run the tests per the instructions. Then attack each problem code one at a time, clearing the codes and re-running the tests one at a time. Use a systematic approach so that you're reducing your variables and you should be able to solve the problems yourself. There's nothing really magical about working with the EEC-IV. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"