Adaptive Lean limit in Fuel Control program?

Mad Horse · 09-17-2001, 08:46 PM

Prepair yourself for a long one!
Ok, I got this error code #85 stating the following:
"Canister Purge solenoid - circuit failure.
or Transaxle Problem - 3/4 shift circuit failure. or ECA status - adaptive "lean limit reached in fuel control program."

I have to mention I changed my plugs a couple of months ago and noticed they had white marks on the tip. I know this means I'm running lean but wasn't sure if it was because they were platinums or if I was really running lean.
So now I'm pretty sure I am running lean. Any ideas on what is causing this? Has anyone else ever got the same error code before?

I also got a code #33 which has to do with the EGR Valve position. However, I've heard of people actually taking this off?? Do I even need it? Should I get a new one or just remove the one on there? If I don't need it could someone explain how to do the modification.

------------------
88GT 5-speed
Mods: Cervinis Ram air hood 3.73 gears, King Cobra clutch, Pro 5.0, March alum. Pullies, DynoMax Cat-back, WMS Xtrac subframes, 16" Ponies.
"Nip it in the Bud"
My Webpage

PKRWUD · 09-17-2001, 09:37 PM

Code 33 means you should check your vacuum lines near the egr valve.

Code 85 is rather easy. There are only three possibilities:
Faulty CANP solenoid
Open in harness circuit
Shorted harness circuit (power to ground)

Do this:
Turn key on. Turn key off. Wait 10 seconds. Set DMM to the 200 ohm scale. Disconnect CANP solenoid connector and measure CANP solenoid resistance. If it's not between 40 and 90 ohms, replace the solenoid. If it is between 40 and 90 ohms, set your DMM to the 20 volt scale, and turn the key on. Measure the voltage between the red wire in the CANP connector and the batteries negative post. If the voltage is below 10.5 volts, repair the open in that circuit. If the voltage is at or above 10.5 volts, turn the key off, and disconnect the connector from the ECM. Set your DMM to the 200 ohm scale, and measure the resistance between the Gray/Yellow wire at the CANP connector and the Gray /Yellow wire at the ECM 60 pin connector. If the resistance is greater than 5 ohms, there is a problem with that gray/yellow wire. If the resistance is 5 ohms or less, set the DMM to the 200k ohms scale, and measure the resistance between the two terminals in the CANP solenoid harness. Make sure the ECM and the solenoid are still disconnected. If the reading is 10k ohms or more, replace the ECM. If the resistance is less than 10k ohms, repair short to power. Reinstall everything and perform a KOEO and a KOER, and see if the code reoccurs.

Take care
~Chris

------------------
Retired Moderator
MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

Mad Horse · 09-17-2001, 10:21 PM

Thanks for the advise PKRWUD!

I'm not sure where the canister is? Is it the black rubber box like thing on the passenger side in the lower front end. The one with the little knobs on it? The actual solenoid is the metal brass looking thing. If not please correct me. The canister near the firewall on the passenger side is for the A.C. isn't? I'm sure I'll have to print out your reply. Just a little too much to remember. Again thanks for your help.

PKRWUD · 09-18-2001, 05:09 AM

You are correct. have fun!

Take care
~Chris

------------------
Retired Moderator
MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-17-2001, 08:46 PM	#1
Mad Horse Registered Member Join Date: Sep 1998 Location: Dayton, OH., United States Posts: 467	Adaptive Lean limit in Fuel Control program? Prepair yourself for a long one! Ok, I got this error code #85 stating the following: "Canister Purge solenoid - circuit failure. or Transaxle Problem - 3/4 shift circuit failure. or ECA status - adaptive "lean limit reached in fuel control program." I have to mention I changed my plugs a couple of months ago and noticed they had white marks on the tip. I know this means I'm running lean but wasn't sure if it was because they were platinums or if I was really running lean. So now I'm pretty sure I am running lean. Any ideas on what is causing this? Has anyone else ever got the same error code before? I also got a code #33 which has to do with the EGR Valve position. However, I've heard of people actually taking this off?? Do I even need it? Should I get a new one or just remove the one on there? If I don't need it could someone explain how to do the modification. ------------------ 88GT 5-speed Mods: Cervinis Ram air hood 3.73 gears, King Cobra clutch, Pro 5.0, March alum. Pullies, DynoMax Cat-back, WMS Xtrac subframes, 16" Ponies. "Nip it in the Bud" My Webpage

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09-17-2001, 09:37 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Code 33 means you should check your vacuum lines near the egr valve. Code 85 is rather easy. There are only three possibilities: Faulty CANP solenoid Open in harness circuit Shorted harness circuit (power to ground) Do this: Turn key on. Turn key off. Wait 10 seconds. Set DMM to the 200 ohm scale. Disconnect CANP solenoid connector and measure CANP solenoid resistance. If it's not between 40 and 90 ohms, replace the solenoid. If it is between 40 and 90 ohms, set your DMM to the 20 volt scale, and turn the key on. Measure the voltage between the red wire in the CANP connector and the batteries negative post. If the voltage is below 10.5 volts, repair the open in that circuit. If the voltage is at or above 10.5 volts, turn the key off, and disconnect the connector from the ECM. Set your DMM to the 200 ohm scale, and measure the resistance between the Gray/Yellow wire at the CANP connector and the Gray /Yellow wire at the ECM 60 pin connector. If the resistance is greater than 5 ohms, there is a problem with that gray/yellow wire. If the resistance is 5 ohms or less, set the DMM to the 200k ohms scale, and measure the resistance between the two terminals in the CANP solenoid harness. Make sure the ECM and the solenoid are still disconnected. If the reading is 10k ohms or more, replace the ECM. If the resistance is less than 10k ohms, repair short to power. Reinstall everything and perform a KOEO and a KOER, and see if the code reoccurs. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

09-17-2001, 10:21 PM	#3
Mad Horse Registered Member Join Date: Sep 1998 Location: Dayton, OH., United States Posts: 467	Thanks for the advise PKRWUD! I'm not sure where the canister is? Is it the black rubber box like thing on the passenger side in the lower front end. The one with the little knobs on it? The actual solenoid is the metal brass looking thing. If not please correct me. The canister near the firewall on the passenger side is for the A.C. isn't? I'm sure I'll have to print out your reply. Just a little too much to remember. Again thanks for your help.

09-18-2001, 05:09 AM	#4
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	You are correct. have fun! Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!