1993 Jeep Cherokee WONT START

WILLMASTER35

MEMBER
1993 JEEP CHEROKEE
6 CYL
2WD
AUTOMATIC
190,450 MILES

OK MY PROBLEM LIES IN THAT MY ENGINE WILL TURN OVER, I HERE MY FUEL PUMP KICK IN WHEN I TURN THE KEY BUT MY ENGINE WILL TURN BUT WILL NOT START. SOMETIMES IT WILL START AND RUN. LIKE I LET IT SIT ALL WEEKEND TRY TO START IT TODAY AND NOTHING I DONT KNOW WHETHER I HAVE A BAD CONNECTION OR WHAT. I WILL TELL YOU ONE THING THOUGH, WHEN IT DOES RUN SOMETIMES IT WILL DIE WHEN IM DRIVING BUT IT WILL USUALLY START BACK UP. CAN YOU GIVE ME A LIST OF THINGS THAT MIGHT BE WRONG. NOW I DID CHANGE THE PUMP RELAY BUT THAT DIDNT HELP. THANKS BILL

Monday, June 30th, 2008 AT 1:45 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Next time it dies out immediately do below

If the engine's condition is in tip top shape-do below to determine if its fuel or spark problem that's if its cranking over and refuses to start

Get a carb cleaner and spray into the carb or the throttle body on an EFI. Did it start and die? If not 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 problem, check the fuel pressure to rule out the 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, distributor pick-up coil, ignition control module, cam and crank sensors-

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time

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Monday, June 30th, 2008 AT 2:55 PM