DTC 32 EGR - ZR-1 Net Registry Forums

Rex Ruby · 03-31-2013

I keep getting the service engine light.
Pulled DTC 32.
FSM says I need a Tech1 to diagnose.
Anyway to diagnose w/o a Tech1?
How do you get at it w/o pulling the engine?

vilant · 03-31-2013

In the 1990 FSM, 32- EGR system error is for the L-98. There is a CCM error 32, not sure if it's the same for a '94.

Rex Ruby · 04-01-2013

I think it's different for '94.
I verified with the FSM bu that doesn't mean the FSM is always correct.
Thanks Joe.

Anyone ever pull the EGR???

Jagdpanzer · 04-01-2013

EGR valve pintle may be stuck causing the ECM to throw a code 32.
FSM test procedure using a Tech1 can confirm proper EGR function before you start taking things apart. The EGR valve is a bear to get at. Have to unbolt and jack up the right side of the engine.

Hib Halverson · 04-05-2013

The 93-95 EGR valve is difficult to remove but you don't have to pull the engine. As Phill suggests, you need to disconnect the engine mounts and jack up the right side of the engine.

You cannot diagnose DTC32 w/o a TECH1, Mastertech or TECH2. .

But, before you do all that work, if you don't own a T1, Mastertech or a T2, I'd take the car to a shop that does and have them troubleshoot the EGR with a tester. That way you'll know for sure if you need to replace the valve before you go to the trouble to lift up the engine.

Rex Ruby · 04-05-2013

Thanks for the replies.
Going to put a Tech 1 on it tomorrow at Carlisle.

03-31-2013	#1
Rex Ruby Join Date: Feb 2005 Location: Springfield, PA Posts: 372	DTC 32 EGR I keep getting the service engine light. Pulled DTC 32. FSM says I need a Tech1 to diagnose. Anyway to diagnose w/o a Tech1? How do you get at it w/o pulling the engine? __________________ John Porter '93 Ruby Coupe ZF6 - Muffler eliminators, Blink Blink kit and Polished ZR1 Wheels * PA Plate: OBSSSN '06 LeMans Blue C6 Coupe - Corsa exhaust * PA Plate: OBSSSV ZR1 Net Registry Founding Member #153 40th Anniversary Registry Member NCM Family Membership #8116 Corvette Forum NE Events Coordinator Delco Cruisers Board of Directors SAVE THE WAVE!

03-31-2013	#2
vilant Join Date: Jun 2012 Location: PA Posts: 772	Re: DTC 32 EGR In the 1990 FSM, 32- EGR system error is for the L-98. There is a CCM error 32, not sure if it's the same for a '94. __________________ Joe 1990 Bright Red ZR-1 #2599 Last edited by vilant; 04-01-2013 at 09:15 PM.

04-01-2013	#3
Rex Ruby Join Date: Feb 2005 Location: Springfield, PA Posts: 372	Re: DTC 32 EGR I think it's different for '94. I verified with the FSM bu that doesn't mean the FSM is always correct. Thanks Joe. Anyone ever pull the EGR??? __________________ John Porter '93 Ruby Coupe ZF6 - Muffler eliminators, Blink Blink kit and Polished ZR1 Wheels * PA Plate: OBSSSN '06 LeMans Blue C6 Coupe - Corsa exhaust * PA Plate: OBSSSV ZR1 Net Registry Founding Member #153 40th Anniversary Registry Member NCM Family Membership #8116 Corvette Forum NE Events Coordinator Delco Cruisers Board of Directors SAVE THE WAVE!

04-01-2013	#4
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: DTC 32 EGR EGR valve pintle may be stuck causing the ECM to throw a code 32. FSM test procedure using a Tech1 can confirm proper EGR function before you start taking things apart. The EGR valve is a bear to get at. Have to unbolt and jack up the right side of the engine. __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake

04-05-2013	#5
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	Re: DTC 32 EGR The 93-95 EGR valve is difficult to remove but you don't have to pull the engine. As Phill suggests, you need to disconnect the engine mounts and jack up the right side of the engine. You cannot diagnose DTC32 w/o a TECH1, Mastertech or TECH2. . But, before you do all that work, if you don't own a T1, Mastertech or a T2, I'd take the car to a shop that does and have them troubleshoot the EGR with a tester. That way you'll know for sure if you need to replace the valve before you go to the trouble to lift up the engine. __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878

04-05-2013	#6
Rex Ruby Join Date: Feb 2005 Location: Springfield, PA Posts: 372	Re: DTC 32 EGR Thanks for the replies. Going to put a Tech 1 on it tomorrow at Carlisle. __________________ John Porter '93 Ruby Coupe ZF6 - Muffler eliminators, Blink Blink kit and Polished ZR1 Wheels * PA Plate: OBSSSN '06 LeMans Blue C6 Coupe - Corsa exhaust * PA Plate: OBSSSV ZR1 Net Registry Founding Member #153 40th Anniversary Registry Member NCM Family Membership #8116 Corvette Forum NE Events Coordinator Delco Cruisers Board of Directors SAVE THE WAVE!