can the throttle position sensor prevent my 1995 gmc truck from starting?
Mar 22, 2009 at 7:48 PM
1995 GMC Sierra throttle position sensor
1995 GMC SIERRA
DASOLOMON39
- MEMBER
- 1 POST
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RASMATAZ
- ✓ASE Certified Mechanic
- 75,992 POSTS
It will cause the engine to idle funny and hesitation problems to include fuel and ignition timing demands
Do below to determine if its fuel or spark problem.
Disconnect a sparkplug wire or 2 and ground it to the engine -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,distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it
Do below to determine if its fuel or spark problem.
Disconnect a sparkplug wire or 2 and ground it to the engine -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,distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it
Mar 22, 2009 at 8:35 PM
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