Author Topic: 1989 Chevy 454 7.4L EGR Valve  (Read 117 times)

Offline WVRV

  • *
  • Posts: 27
  • Member since: 2019
  • I own: a Motor Home
  • Year: 1989
  • Make: Winnebago
  • Model: Warrior
  • Chassis: Chevy P30
  • Engine: 454
1989 Chevy 454 7.4L EGR Valve
« on: March 27, 2020, 02:48 PM »
I welded up the manifold ports from the A.I.R. system using steel rod. The truck is way quieter now. I have stall issues and I think it is linked to the EGR. Now that the AIR system is out theres empty ports coming off the EGR so I figured then was the time to replace it. I bought this at Napa and went to fit it on, but it didnt match up at all on either set of bolts. Any thoughts?

Offline beaverman

  • *
  • Posts: 106
  • Member since: 2015
  • I own: a Motor Home
  • Year: 1988
  • Make: Winnebago
  • Model: Superchief
  • Chassis: Chevy
  • Engine: 454
Re: 1989 Chevy 454 7.4L EGR Valve
« Reply #1 on: March 27, 2020, 02:55 PM »
Obviously the wrong application, did you tell them that it was for a MH? or P30 truck, different from a standard car application, can't help with what part# it is because I ripped mine off and replaced manifolds with headers, and intake with an edelbrock,Rich should be along soon with some tips, he's very well versed with Chevy power plants.

Offline WVRV

  • *
  • Posts: 27
  • Member since: 2019
  • I own: a Motor Home
  • Year: 1989
  • Make: Winnebago
  • Model: Warrior
  • Chassis: Chevy P30
  • Engine: 454
Re: 1989 Chevy 454 7.4L EGR Valve
« Reply #2 on: March 27, 2020, 03:20 PM »
Could It potentially be this instead?


https://www.napaonline.com/en/p/CRB226172

Offline Rickf1985

  • 6 year member
  • *
  • Posts: 5857
  • Member since: 2013
  • I own: a Motor Home
  • Year: 1989
  • Make: Winnebago
  • Model: Chieftain
  • Chassis: Chevy
  • Engine: 454
Re: 1989 Chevy 454 7.4L EGR Valve
« Reply #3 on: March 27, 2020, 04:17 PM »
You are not working on an EGR valve. Where is that located? The EGR valve is located right in front of the carburetor on top of the intake manifold and it does not have any hoses hooked up to it, especially rubber hoses. I am thinking that is part of the A.I.R. system that you plugged off.


That almost looks like the back of an air pump.

 

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