Car shuts off while driving

Tiny
HELPLESSGTI
  • MEMBER
  • 1986 VOLKSWAGEN GTI
  • 4 CYL
  • 2WD
  • MANUAL
  • 90,000 MILES
1986 volkswagon gti manual shuts off while running. All power stops. It will crank over like it wants to start but wont. After a bit it will start again. This happens every other day or so. Sometimes it wont happen for a week, and then it does. Shop replaced fuel pump and relay, still happening.
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Thursday, February 17th, 2011 AT 6:32 PM

1 Reply

Tiny
2CEXPT
  • MEMBER
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, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-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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Thursday, February 17th, 2011 AT 8:21 PM

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