0 91 Jeep cherkee

Tiny
JAMIE PORTER
  • MEMBER
  • 1991 DODGE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
91 jeep cherkee wont start in mornings but will in afternoon and night
Sunday, August 21st, 2011 AT 5:42 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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

https://www.2carpros.com/articles/car-cranks-but-wont-start

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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Sunday, August 21st, 2011 AT 5:44 PM

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