C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Dreaded code 32

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Old Feb 17, 2002 | 12:13 PM
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Default Dreaded code 32

My service engine light went on right after I changed the Thermostat, shows code 32. I checked another car because I broke the thin nylon vacuum lines and when I replaced them I might have reversed them , corrected that, light comes on when driving steady at about 65-70.
When I place a vacuum pump on the EGR it doesn't hold vacuum. Is it supposed to? From what I've read on a search it seems to indicate that the vacuum holds at some time and not at others.
Does anybody know what is correct? It seems to me that if you put vacuum to the EGR it should hold until released. My car is a late '86 Aluminum Head.
Barrier
:confused: :confused: :confused: :confused: :confused:


[Modified by Barrier, 4:15 PM 2/17/2002]
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Old Feb 17, 2002 | 12:43 PM
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Default Re: Dreaded code 32 (Barrier)

I get the code 32 a lot on extended highway driving. It doesn't seem to affect how it runs though.
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Old Feb 17, 2002 | 12:54 PM
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Default Re: Dreaded code 32 (dtorc4)

90 percent of the time it is the relay which mounts to the water neck. You could have broken a wire or a vacuum line to it.
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Old Feb 17, 2002 | 01:15 PM
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Default Re: Dreaded code 32 (Barrier)

the EGR has 2 parts... if the code 32 comes on at startup, then its the electronics - meaning they did'nt pass the computer self test.

if the code goes under cruise, then its the EGR valve itself...

hope this helps.
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Old Feb 17, 2002 | 01:56 PM
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Default Re: Dreaded code 32

Since you said this happened after the T- stat change, I would imagine the EGR solenoid on there may not be plugged in right,or a vacuum tube cracked or broke.
Check all that carefully and replace any lines that need to be changed.

Also, on the back of the intake manifold on the drivers side is a wire that comes off the egr exhaust feed tube..its a white ceramic switch with a black wire...check to see if that ceramic part or wire itself is coming loose or cracked.
Thats also a very common egr code thrower when the switch goes bad or fails from age.
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Old Feb 17, 2002 | 02:36 PM
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Default Re: Dreaded code 32 (Bill's86Coupe)

Bill,
Don't you mean passenger side?
Also, on the back of the intake manifold on the drivers side
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Old Feb 17, 2002 | 10:34 PM
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Default Re: Dreaded code 32 (Ray Quayle)

I had the problem that Bill mentioned... It was the EGR temperature switch. The check engine light only came on at a cold start. If you shut it off, and back on after it was warm, it was fine. It think it only cost $9.95 from Ecklers to fix the problem. Hope this helps!

:cheers:
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Old Feb 17, 2002 | 11:28 PM
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Default Re: Dreaded code 32 (Ray Quayle)

LOL..Yep! Brain fart or something there...thanks for the correction ray!
Sorry peeps.
:D

Bill,Don't you mean passenger side?Also, on the back of the intake manifold on the drivers side
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Old Feb 18, 2002 | 10:19 AM
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Default Re: Dreaded code 32 (Bill's86Coupe)

Thanks for help! I still cannot believe the power of this site when it comes to problem solving.
I changed all the lines and I'm gonna check. I still wonder how you do a check on just the EGR? What kind of vacuum should it take? I put a pump on it, seems to hold for a few seconds, then drops.
Barrier :)
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