Code 32 (EGR) help needed

[87gninpa]

Well i figured out what was causing my car to die on me when letting off the gas, the check valve to the egr was backwards(i know, im an idiot) but anways, when i put it right it set a code 32......i replaced the solenoid with a know good one and the code is still there.....whats next, replace the valve?

 

[NJTurbo]

CODE 32

Trouble Code 32 indicates that the Exhaust Gas Recirculation (EGR) valve diaphragm is not where the ECM expects it to be. The ECM controls the diaphragm with a Pulse-Width Modulated (PWM) waveform. The EGR has a vacuum bleed solenoid that adjusts the vacuum applied to the EGR valve based on this pulse width. If there is sufficient vacuum at the EGR valve, a switch closes to send a signal back to the ECM. The absence of this signal is the bases for code 32.

The conditions for setting this code are:

no vacuum to EGR (switch open), and
Code 33 or 34 (MAF error) is not present, and
engine running and LV8 is less than 100, and
coolant temperature is > 118 deg F (48 deg C), and
the EGR solenoid duty cycle is < 65%, and
the above conditions are met for more than 25 seconds



Typical causes for this code include:

1) Faulty EGR valve-to-ECM connection
2) Plugged EGR passages and/or sticking EGR valve
3) Defective EGR valve
4) Defective ECM

 

[pacecarta]

when you said you had it backwards what way did you put it back to make it right

the checkvalve should block boost from the engine side and allow vaccuum
try blowing through it
, if you cant blow through than the end you blew into goes to the metal pipe , the other end to the egr solenoid controller

, if you can blow through both ends throw it away .

 

[87gninpa]

actually jim dunn noticed it when he was looking over my car, so i would assume its correct now......also, with the engine light on at idle, when i take the line from the valve to the solenoid off, the line going to the solenoid is sucking. i would assume this would mean the solenoid is bad.....am i correct?

 

[turbotwister]

Originally posted by NJTurbo
CODE 32

Trouble Code 32 indicates that the Exhaust Gas Recirculation (EGR) valve diaphragm is not where the ECM expects it to be. The ECM controls the diaphragm with a Pulse-Width Modulated (PWM) waveform. The EGR has a vacuum bleed solenoid that adjusts the vacuum applied to the EGR valve based on this pulse width. If there is sufficient vacuum at the EGR valve, a switch closes to send a signal back to the ECM. The absence of this signal is the bases for code 32.

The conditions for setting this code are:

no vacuum to EGR (switch open), and
Code 33 or 34 (MAF error) is not present, and
engine running and LV8 is less than 100, and
coolant temperature is > 118 deg F (48 deg C), and
the EGR solenoid duty cycle is < 65%, and
the above conditions are met for more than 25 seconds



Typical causes for this code include:

1) Faulty EGR valve-to-ECM connection
2) Plugged EGR passages and/or sticking EGR valve
3) Defective EGR valve
4) Defective ECM

DAMN!your pretty good at cutting and pasting!

 

[87gninpa]

So, does anyone know which part could be the problem? also, it runs like crap, almost like a bad miss, but when i take the vacuum line off of the egr valve, the car runs fine......is the valve bad or the solenoid?

 

[pacecarta]

if the lines are correctly connected (they swap over before plugguing into the solenoid (closest to valvecover goes to the egr the closest to plenum goes to the vac tee and source )
if everything is plumbed right replace the solenoid , it should only activate the egr valve on decell

if cash is short pick one up i the boneyards , lots of gm using them

 

[87gninpa]

great thanks, thats what i was told.....