1994 Jeep YJ wont start

DAVID PATTERSON

MEMBER
1994 JEEP WANGLER YJ
4 CYL
4WD
MANUAL
150,000 MILES

Wont start in the morning, turn the key on and cranks, cycle the key on and off several timer, fuel relay under hood starts clicking and can hear purging of fuel but still wont start until after seversl cycles later. I have cleaned body to chassie ground and enging ground. What else can I do?

Thursday, October 15th, 2009 AT 11:10 AM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Don't cycle the key anymore when it refuses to start do below to determine if its fuel or spark problem could very well be the ignition switch

Get a helper 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, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it

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Thursday, October 15th, 2009 AT 4:24 PM