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The cam or crank sensor is going out when driving at high speeds. I would have those parts check, and have the fuel pressure check , fuel filter change to be on the safe side.
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The dist. is a half tooth off location. Pull the dist. an reset timing. Be sure #1 cyl. is at the top and the rotor is pointing to #1 in the cap. or firing order.
You need to check for fault codes, the check engine light is on because a fault is in the system. Here is how to do a fault code test, no special tools required. Follow the link please. FAQ How to read older GM codes for free
The 5.0L injector is sized to deliver approximately 4.05 milligrams of fuel with a 2.5 millisecond pulse or 18.13 lbs per hr at approximately 36 PSI. The 5.7L injector is sized to deliver approximately 4.83 milligrams of fuel with a 2.5 millisecond pulse or 23.92 lbs per hr at approximately 43.5 PSI. This information is typical for all manufacturers and flow rates will vary slightly even between identicle injectors. Good luck and hope this helps.
This solution is for 1987 to 1989 Chevrolet Camaro vehicles, TPI V8s.
It's an Idle Air Control (IAC) circuit failure. The close throttle engine speed is 125 RPM above or below desired (commanded) idle speed for 45 seconds. See a dealer service department for trouble diagnosis.
What about at idle? Same issue(s)? Thanks!
What about at idle? Same issue(s)? Thanks!
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