I have been getting the occasional code 32 so I decided to inspect my egr valve, turns out it was completely clogged with carbon so I bought a replacement from AutoZone (only place that had one). I also noticed that someone had plugged the vacuum connector that goes to the top of the egr with a ball bearing (no idea why), so I bought a new connector.

After getting the new valve on with the new connector, I hear a whistle coming from the egr when I rev the engine, and it also seems to idle rougher. Could this new egr be leaky? I'm trying to decide if I should take it back.

 

sounds like a vacuum leak. the valve does not get vacuum applied ( solenoid opens)until the engine warms up and during a highway speed cruise.

 

So the line going into the top of the egr isn't supposed to have vacuum when the engine is cold? If that's the case it may explain why the ball bearing was in there to stop it up.

I'm not even sure where the solenoid is.

 

should be on a bracket under the coil. the vacuum goes from the throttlebody to the solenoid than to the egr valve. if the egr is open at idle the car will be running lean.

 

The exhaust smells rich, but I think I may have a leaky injector.

If that solenoid is closed like it's supposed to be, I shouldn't have any vacuum (or whistling) from the egr. Is that correct?

I looked on RockAuto, but what they're showing as a egr solenoid looks to be some kind of temp sensor.

 

if your egr is open causing the engine to be lean the oxygen sensor will force the car to run rich. There is a sensor in the egr and when that is grounded that causes the code 32.
there is a picture of the solenoid. there should only be vacuum to the solenoid now. when solenoid is commanded to open that's when the vacuum gets applied to the egr valve.

https://www.thirdgen.org/forums/tpi/...rs-i-need.html

 

I see what you mean that is cold start temp sensor. its listed wrong.

Niehoff Ignition FE9018 or Borg Warner EGR232 you might need to change the connector end

 

http://shop.advanceautoparts.com/web...GRPEMISAMS____

http://www.ebay.com/itm/87-92-TPI-TB...a#ht_700wt_821

 

Thanks

 

err......if the egr is open it will allow exhaust(an inert gas) to take up some volume in the cylinder leaving less allowable volume for oxygen.since fuel molecules cant properly mix with exhaust and there is less oxygen, it would actually run rich and definitely smell like it.

 

Well someone had plugged the egr vacuum line with a ball bearing, so I guess that was their "fix" for the solenoid being stuck open.

I removed the old solenoid and sure enough I could blow air right through it, so no doubt it's not working. I did buy the one for a '95 Caddy like mentioned on another thread, but the elec connector doesn't match up, so I guess I need to get one of those from TPI-parts.

Ugh, another week long wait.

 

no junk yards near by with caddy's to get one from?

 

Sad thing is there's a junkyard a few miles up the road, but the guy that runs it is an ***hole that won't get a dime of my money.

 

hey just some info i read in my gm 1986 camaro and 1990 camaro manuals. they both say that the egr solenoid is a normally open actuator and the ecm grounds it or turns it "0n" to close the solenoid and block vacuum flow to the valve. if you can blow or suck through the solenoid disconnected or turned off that is normal and nothing is wrong. if you can do the same with it energized on (closed) then the solenoid is bad, if not then you got a circuit issue. hope it helps.