EGR -code 32
Thread Starter
7th Gear
Joined: Dec 2017
Posts: 7
Likes: 0
From: tilbury ontario
EGR -code 32
Start with car runs great and only 60k on it. After 30 minutes or so the engine light comes on for a code 32.But this only happens on warm days. So I installed a new control valve relay and same thing. I drive this 1988 in the cool weather for days with no light. Just an annoyance,Anyone have ideas.
Melting Slicks
Joined: Nov 2007
Posts: 2,830
Likes: 147
From: Gainesville FL
mavv72 - The factory service manuals have a section with troubleshooting charts for all the codes. Rather than guess and throw parts at it you should check out that section and see where it leads you. Something you can check though in the meantime is if all your vacuum connections are good. That can throw that code.
Good Luck,
Robert
Good Luck,
Robert
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Does it come on after steady driving (highway) for a while?
If so and you are running a stock TC, the ECM is calling for EGR and not seeing response from the indicator in the RH exhaust header.
I believe the test for this is to force EGR at idle and measure the indicator voltage, it should be zero volts.
If so and you are running a stock TC, the ECM is calling for EGR and not seeing response from the indicator in the RH exhaust header.
I believe the test for this is to force EGR at idle and measure the indicator voltage, it should be zero volts.
Thread Starter
7th Gear
Joined: Dec 2017
Posts: 7
Likes: 0
From: tilbury ontario
Does it come on after steady driving (highway) for a while?
If so and you are running a stock TC, the ECM is calling for EGR and not seeing response from the indicator in the RH exhaust header.
I believe the test for this is to force EGR at idle and measure the indicator voltage, it should be zero volts.
If so and you are running a stock TC, the ECM is calling for EGR and not seeing response from the indicator in the RH exhaust header.
I believe the test for this is to force EGR at idle and measure the indicator voltage, it should be zero volts.
Thread Starter
7th Gear
Joined: Dec 2017
Posts: 7
Likes: 0
From: tilbury ontario
mavv72 - The factory service manuals have a section with troubleshooting charts for all the codes. Rather than guess and throw parts at it you should check out that section and see where it leads you. Something you can check though in the meantime is if all your vacuum connections are good. That can throw that code.
Good Luck,
Robert
Good Luck,
Robert
Thread Starter
7th Gear
Joined: Dec 2017
Posts: 7
Likes: 0
From: tilbury ontario
I've been through this Code 32 on the highway thing on my 85, my 88, and a friend's 86. It was always the EGR Diagnostic Temp Switch had come out of calibration. Here's how I fixed them:
The engine and sensor must be cold. (Not driven yet that day).
Unplug the wire for the sensor that is in the EGR pipe at the rear of the engine.
Connect your VOM between the sensor wire and ground. It should be Infinite Ohms.
Twist the metal "terminal" in the center of the sensor clockwise, looking down on it. There may be some material locking the screw in place, but it should break away when you turn the screw.
When your VOM shows 0-Ohms, stop. Fine tune the adjustment for about 1/8th turn back from 0-Ohms.
---If you get the adjustment too tight, the sensor may be 0-ohms on a warm engine when you restart it. If the sensor is 0-Ohms at start up, the CEL will illuminate immediately, and Code 32 will set. (If you get a 32 on start up, the sensor is shorted, or "too tight").
Once you are satisfied with the adjustment, lock it with a dab of JB weld.
The engine and sensor must be cold. (Not driven yet that day).
Unplug the wire for the sensor that is in the EGR pipe at the rear of the engine.
Connect your VOM between the sensor wire and ground. It should be Infinite Ohms.
Twist the metal "terminal" in the center of the sensor clockwise, looking down on it. There may be some material locking the screw in place, but it should break away when you turn the screw.
When your VOM shows 0-Ohms, stop. Fine tune the adjustment for about 1/8th turn back from 0-Ohms.
---If you get the adjustment too tight, the sensor may be 0-ohms on a warm engine when you restart it. If the sensor is 0-Ohms at start up, the CEL will illuminate immediately, and Code 32 will set. (If you get a 32 on start up, the sensor is shorted, or "too tight").
Once you are satisfied with the adjustment, lock it with a dab of JB weld.
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