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1986 Chevy Cavalier EGR code

Tiny
CAM39
  • MEMBER
  • 1986 CHEVROLET CAVALIER
  • 6 CYL
  • FWD
  • MANUAL
  • 180,000 MILES
I have an 86z24 cavalier with the 2.8 and 4sp, lately im getting a code32 - egr system failure. Ive replaced the egr and now am still getting the code, not at turn key but sometimes after 15 - 20 miles of driving. This egr is the vacuum type with no electrical connectors, my question is. What sensors or connectors are sending my cars computer the egr code as failed? Could the O2 sensor be setting the code 32 even tho I have no code for an O2 sensor? Im lost as to why this code is showing
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Friday, January 4th, 2008 AT 3:15 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be a vacuum solenoid or clogged intake passages. An open EGR creates a hugh vacuum leak that leans out the A/F mixture. A closed EGR produces pinging/detonation.
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Friday, January 4th, 2008 AT 3:25 PM
Tiny
CAM39
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  • 5 POSTS
I was getting a mass air code and replaced the mass air sensor but still have the egr code. How can/do I test a vauum solenoid? Any more ideas/suggestions?
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Friday, January 4th, 2008 AT 3:38 PM
Tiny
RASMATAZ
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Check whether the EGR is getting vacuum when you slightly push on the gas pedal.
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Friday, January 4th, 2008 AT 5:08 PM
Tiny
CAM39
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  • 5 POSTS
Unhook the vacuum line from the egr and check for suction when gas is applied?
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Friday, January 4th, 2008 AT 5:11 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If no suction/vacuum-look for a vacuum solenoid from the EGR going to the engine's intake.
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Saturday, January 5th, 2008 AT 12:15 PM

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