Question about 1988 Chevrolet Camaro

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1988 camaro iroc z 350 tune port injected. need to reset timing on the computer. jodie

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To set the ignition timing you will need to disconnect the electronic timing control. It is usually a dark brown and black wire located on the passenger side foot well where the carpet meets the firewall. Once the wire is disconnected, loosen the distributor and set the timing with a timing light. If you have an automatic transmission, I think the timing is 6deg BTDC. Tighten the distributor down and connect the ETC wire.

Posted on Mar 12, 2011

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For future reference, its a tan single wire connector (likes like an O2 sensor plug) and its located under the hood in the main computer harness near the blower fan motor before it gets tucked behind the fender. The plug should be sticking out of the wire loom.

Posted on Aug 23, 2011

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1 Answer

Camaro iroc 1989


I don't see a reference to your problem...the real 89 IROC is the 5.7 V-8...tuned port injection:)

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Well, yes and no.
Yes the relay or the computer could be faulty.
But the computer is not going to ground the relay until the engine temp reaches about 225 degrees.
Since the thermostat opens at 195 degrees running at 200 is normal.

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Steam from the exhaust means, unfortunately, that coolant is entering the cylinders, and very little running like that will destroy the rings and pistons. It could be anything from an intake or head gasket leak to a cracked cylinder.

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The tuned port injection is specific and need's the proper wiring harness for the application, and the same with the computer.

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