• Tiny
  • coollcos
  • 1990 Chevrolet Corvette

Engine Performance problem
1990 Chevy Corvette V8 Two Wheel Drive Manual 100000 miles

runs good for a few minutes, then gets rough idle, turn it off it will not start back for about 10 minutes, added plugs and wires, fuel pump, dist, cap and button, air sensor, ignition m odule, checked vacuum lines, new air filter, fuel filter, maf sensor, please help

Sunday, October 3rd, 2010 AT 12:00 AM

1 Answer

  • Tiny
  • rasmataz
  • Member

Turn it off it will not start back for about 10 minutes,

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

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Sunday, October 3rd, 2010 AT 2:01 PM

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