Tuning Issues, I am out of ideas

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.

schwindty82 · 01-30-2005, 08:13 PM

Ok thanks for the previous advice I did reset the comp got the car to warm up temp and then pulled some more codes as well I changes the fuel filter, plugs, wires, and ALL vacum lines. After this these are the codes I got back and it is still running like garbage.

Key On engine Running

12-R RPM Idle High
42-R O2 Sensor Rich- I think I have to change my 24lb to 19
92-R Sytems rich at 02
33-R EGR Valve not opening properly- I think I am going to fabricate a plate for my TB to go where the EGR was suposta be and then leave the sensor part of the EGR still attached. Will this work?

Key On Engine OFF

WHAT THE HELL ARE THESE?

51 C ECTsensor out of range/circut open
31 C EVP or PFE circut below minimium voltage
31 C EGR Valve control sensor fault ( Yeah same code 2 different meanings??)

Ok there we have it thats what i have fixed soo far and now I am at a piont in which I am lost and have no idea on what to do next with it to get it running half ass good and to idle. Thanks once again in advance.

Schwindt

schwindty82 · 01-30-2005, 09:43 PM

Nothing yet guys? I am lost here

01-30-2005, 08:12 AM	#1
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!"

01-30-2005, 08:13 PM	#2
schwindty82 Registered Member Join Date: Jan 2005 Posts: 5	Re: Tuning Issues, I am out of ideas Ok thanks for the previous advice I did reset the comp got the car to warm up temp and then pulled some more codes as well I changes the fuel filter, plugs, wires, and ALL vacum lines. After this these are the codes I got back and it is still running like garbage. Key On engine Running 12-R RPM Idle High 42-R O2 Sensor Rich- I think I have to change my 24lb to 19 92-R Sytems rich at 02 33-R EGR Valve not opening properly- I think I am going to fabricate a plate for my TB to go where the EGR was suposta be and then leave the sensor part of the EGR still attached. Will this work? Key On Engine OFF WHAT THE HELL ARE THESE? 51 C ECTsensor out of range/circut open 31 C EVP or PFE circut below minimium voltage 31 C EGR Valve control sensor fault ( Yeah same code 2 different meanings??) Ok there we have it thats what i have fixed soo far and now I am at a piont in which I am lost and have no idea on what to do next with it to get it running half ass good and to idle. Thanks once again in advance. Schwindt __________________ Edelbrock Performer Heads and Intake, Fuel Pressure Reg, 1.7 Roller Rockers, 190 fuel pump, 24lb injectors, 3:73 gears, AC/Smog removal, Headers no cats into Ravin Mufflers, cold air, underdrives, Stock tranny and Cam.

01-30-2005, 09:43 PM	#3
schwindty82 Registered Member Join Date: Jan 2005 Posts: 5	Re: Tuning Issues, I am out of ideas Nothing yet guys? I am lost here __________________ Edelbrock Performer Heads and Intake, Fuel Pressure Reg, 1.7 Roller Rockers, 190 fuel pump, 24lb injectors, 3:73 gears, AC/Smog removal, Headers no cats into Ravin Mufflers, cold air, underdrives, Stock tranny and Cam.

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