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Old Apr 14, 2009 | 09:32 PM
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MoFun's Avatar
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My father has a 92'. He put a set of trick flow heads, an upgraded cam, plugs, wires, distributor. It ran great for about three days. Now when it starts it'll run great for about 5 minutes. Then it starts backfiring, an missing, an the check engine light comes on. Its giving out a code 36. We changed the plugs an wires(4 of the wires were melted on the exhaust headers) but problem still exist.

Last edited by MoFun; Apr 14, 2009 at 09:40 PM.
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Old Apr 15, 2009 | 04:14 AM
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Check the connection on the MAF sensor. Also check your burn off relays.
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Old Apr 15, 2009 | 05:29 AM
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Originally Posted by Weav's Vet
Check the connection on the MAF sensor. Also check your burn off relays.
No MAF on a 92, it is speed density. Code 36 on a 92 is related to the Opti, I would trouble shoot the circuit using the FSM. You may have gotten a bad one.
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Old Apr 15, 2009 | 09:12 AM
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I have seen something like this before. Make sure no other wires or bundles are even close to the headers in front or behind

I had this happen with my first vette after I changed the heads and again on our boat when the zip tie broke and the ignition bundle fell on the exhaust manifold.
Good luck
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Old Apr 15, 2009 | 09:32 AM
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Originally Posted by toptechx6
No MAF on a 92, it is speed density. Code 36 on a 92 is related to the Opti, I would trouble shoot the circuit using the FSM. You may have gotten a bad one.
Also check connector/terminals and harness to opti. Some brands of optis seem to have less trouble then others IMO
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