Intermittent Service Engine Soon Light
Thread Starter
Cruising
Joined: Aug 2002
Posts: 10
Likes: 0
From: York ME
Intermittent Service Engine Soon Light
Car is a 1987 convertible with 63,000 miles and automatic transmission. The "service engine soon" light comes on when I'm driving at highway speeds (doesn't happen around town). I saw a service bulletin summary on the web that might apply: GM87-99 (4/1987):"service engine soon light-code 36 (MAF sensor burn-off fault)-plugged crankase...). Anyone have that TSB?Any help would be appreciated.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: Intermittent Service Engine Soon Light (MAINEVETTE87)
first off, when the SES is intermittent like that, it means a fault was found, but the computer was able to over come it.
there was a site that had all the C4 TSB's, but I don't have the link with me.
there was a site that had all the C4 TSB's, but I don't have the link with me.
Burning Brakes
Joined: Apr 2002
Posts: 755
Likes: 0
From: Patterson CA
Re: Intermittent Service Engine Soon Light (MAINEVETTE87)
This is the TSB that you are referring to:
Service Bulletin Number: 87-99
Bulletin Sequence Number: 050
Date of Bulletin: 8704
NHTSA Item Number: 90918
Make: CHEVROLET
Model: CORVETTE
Year: 1987
Component: FUEL:FUEL EMISSION CONTROL
Summary: SERVICE ENGINE SOON LIGHT-CODE 36 (MAF SENSOR BURN-OFF FAULT)-PUGGED CRANKCASE V ENT TUBE OR FAULTY MAF POWER OR BURN OFF RELAYS-TEST RELAY-REPLACE THE RELAY-ALL 1986-87 CHEVROLET CAMARO/CORVETTE MODELS WITH PFI ENGINES (VIN CODES F AND 8)
But you really need to pull the code to find out what is going on, it may just be a code 32. Go to the following link, it explains how to pull and decipher the code, then post back here and we will help you from there... :thumbs:
http://www.c4vettes.com/ecm.htm
[Modified by VetBoy89, 8:14 AM 3/7/2003]
Service Bulletin Number: 87-99
Bulletin Sequence Number: 050
Date of Bulletin: 8704
NHTSA Item Number: 90918
Make: CHEVROLET
Model: CORVETTE
Year: 1987
Component: FUEL:FUEL EMISSION CONTROL
Summary: SERVICE ENGINE SOON LIGHT-CODE 36 (MAF SENSOR BURN-OFF FAULT)-PUGGED CRANKCASE V ENT TUBE OR FAULTY MAF POWER OR BURN OFF RELAYS-TEST RELAY-REPLACE THE RELAY-ALL 1986-87 CHEVROLET CAMARO/CORVETTE MODELS WITH PFI ENGINES (VIN CODES F AND 8)
But you really need to pull the code to find out what is going on, it may just be a code 32. Go to the following link, it explains how to pull and decipher the code, then post back here and we will help you from there... :thumbs:
http://www.c4vettes.com/ecm.htm
[Modified by VetBoy89, 8:14 AM 3/7/2003]
