EGR Fun (Code 32) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*JCampbell* · 03-17-2013, 03:13 PM

Trying to diagnose an EGR issue. Typical code 32: SES light @ constant throttle on hwy, pinging @ light throttle, etc.

Ran the standard EGR valve tests: EGR valve takes and holds 15" of vacuum with no appreciable signs of loss. Engine stumbles when EGR is manually engaged at idle. Vacuum source @ TB shows 20" of vacuum @ 2500-3000 RPM. Vacuum lines are all intact and connected correctly.

Could the issue be at the EGR solenoid? Any way to test this? Am I missing something?

03-17-2013, 03:13 PM	#1
JCampbell Account Suspended Join Date: Apr 2008 Location: Hesperia, Ca Posts: 1,332	EGR Fun (Code 32) Trying to diagnose an EGR issue. Typical code 32: SES light @ constant throttle on hwy, pinging @ light throttle, etc. Ran the standard EGR valve tests: EGR valve takes and holds 15" of vacuum with no appreciable signs of loss. Engine stumbles when EGR is manually engaged at idle. Vacuum source @ TB shows 20" of vacuum @ 2500-3000 RPM. Vacuum lines are all intact and connected correctly. Could the issue be at the EGR solenoid? Any way to test this? Am I missing something?



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