EGR failure code 32
09-30-2010, 11:39 PM
#1
EGR failure code 32
My 89 Vette has the CEL coming on only now and then. Getting a 32. So whats failed EGR valve, sensor, solenoid, any way to check these parts.
Thanks for any help
JR
Thanks for any help
JR
10-01-2010, 12:03 AM
#4
Instructor
Yes, it's vac operated. No vac to it in park or neutral because the solenoid is de-energized.
May be that yours isn't completely stuck, but sticks at times.
May be that yours isn't completely stuck, but sticks at times.
Last edited by Robs 1988; 10-01-2010 at 12:05 AM.
10-01-2010, 12:56 PM
#7
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The EGR valve diaphragm also might be torn or rotted away, resulting in inability to hold vacuum. Best to physically remove the valve, then connect to a MityVac and see if it holds vacuum pressure.
10-01-2010, 05:07 PM
#9
I have heard a sticking open EGR valve could cause you to run lean as I guess it is pumping in air when it shouldn't.
10-02-2010, 10:13 AM
#11
Le Mans Master
remember, the egr valve will not hold vacuum. it has a calibrated leak so that when the EGR solenoid turns off, the vacuum slips away to allow the valve to close.
you need to put vacuum directly to the vacuum hose that goes to the EGR valve.
What you are looking for is that when you apply vacuum to the valve, the engine stumbles and almost quits, then when the egr valve closes, the engine idles fine.
Ususally, when the egr code is set, the temp sensor on the EGR pipe is on the fritz and does not tell the computer that the pipe got hot.
The reason the pipe gets hot, is that the EGR tube will not get hot when exhaust is not flowing in the tube with the EGR valve in the off position.
When the computer grounds the solenoid, the vacuum flows to the EGR valve, the EGR valve opens, the exhaust starts flowing in the tube, the sensor gets hot, the computer gets it's feedback so there is no code, the engine gets the intake mixture dilution, and the world is happy.
you need to put vacuum directly to the vacuum hose that goes to the EGR valve.
What you are looking for is that when you apply vacuum to the valve, the engine stumbles and almost quits, then when the egr valve closes, the engine idles fine.
Ususally, when the egr code is set, the temp sensor on the EGR pipe is on the fritz and does not tell the computer that the pipe got hot.
The reason the pipe gets hot, is that the EGR tube will not get hot when exhaust is not flowing in the tube with the EGR valve in the off position.
When the computer grounds the solenoid, the vacuum flows to the EGR valve, the EGR valve opens, the exhaust starts flowing in the tube, the sensor gets hot, the computer gets it's feedback so there is no code, the engine gets the intake mixture dilution, and the world is happy.
10-02-2010, 01:28 PM
#12
Put some headers on it and you won't have no more EGR.
remember, the egr valve will not hold vacuum. it has a calibrated leak so that when the EGR solenoid turns off, the vacuum slips away to allow the valve to close.
you need to put vacuum directly to the vacuum hose that goes to the EGR valve.
What you are looking for is that when you apply vacuum to the valve, the engine stumbles and almost quits, then when the egr valve closes, the engine idles fine.
Ususally, when the egr code is set, the temp sensor on the EGR pipe is on the fritz and does not tell the computer that the pipe got hot.
The reason the pipe gets hot, is that the EGR tube will not get hot when exhaust is not flowing in the tube with the EGR valve in the off position.
When the computer grounds the solenoid, the vacuum flows to the EGR valve, the EGR valve opens, the exhaust starts flowing in the tube, the sensor gets hot, the computer gets it's feedback so there is no code, the engine gets the intake mixture dilution, and the world is happy.
you need to put vacuum directly to the vacuum hose that goes to the EGR valve.
What you are looking for is that when you apply vacuum to the valve, the engine stumbles and almost quits, then when the egr valve closes, the engine idles fine.
Ususally, when the egr code is set, the temp sensor on the EGR pipe is on the fritz and does not tell the computer that the pipe got hot.
The reason the pipe gets hot, is that the EGR tube will not get hot when exhaust is not flowing in the tube with the EGR valve in the off position.
When the computer grounds the solenoid, the vacuum flows to the EGR valve, the EGR valve opens, the exhaust starts flowing in the tube, the sensor gets hot, the computer gets it's feedback so there is no code, the engine gets the intake mixture dilution, and the world is happy.
10-02-2010, 01:34 PM
#13
remember, the egr valve will not hold vacuum. it has a calibrated leak so that when the EGR solenoid turns off, the vacuum slips away to allow the valve to close.
you need to put vacuum directly to the vacuum hose that goes to the EGR valve.
What you are looking for is that when you apply vacuum to the valve, the engine stumbles and almost quits, then when the egr valve closes, the engine idles fine.
Ususally, when the egr code is set, the temp sensor on the EGR pipe is on the fritz and does not tell the computer that the pipe got hot.
The reason the pipe gets hot, is that the EGR tube will not get hot when exhaust is not flowing in the tube with the EGR valve in the off position.
When the computer grounds the solenoid, the vacuum flows to the EGR valve, the EGR valve opens, the exhaust starts flowing in the tube, the sensor gets hot, the computer gets it's feedback so there is no code, the engine gets the intake mixture dilution, and the world is happy.
you need to put vacuum directly to the vacuum hose that goes to the EGR valve.
What you are looking for is that when you apply vacuum to the valve, the engine stumbles and almost quits, then when the egr valve closes, the engine idles fine.
Ususally, when the egr code is set, the temp sensor on the EGR pipe is on the fritz and does not tell the computer that the pipe got hot.
The reason the pipe gets hot, is that the EGR tube will not get hot when exhaust is not flowing in the tube with the EGR valve in the off position.
When the computer grounds the solenoid, the vacuum flows to the EGR valve, the EGR valve opens, the exhaust starts flowing in the tube, the sensor gets hot, the computer gets it's feedback so there is no code, the engine gets the intake mixture dilution, and the world is happy.
