1995 Jeep Laredo wont start

Tiny
JKSJEROMI
  • MEMBER
  • 1995 JEEP LAREDO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 218,000 MILES
I have a problem tryin to start my jeep I have changed the spark plugs and battery and fuel filter and everything eles but it still wont turn over it just cranks and thats all
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Monday, May 24th, 2010 AT 6:16 PM

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Tiny
RASMATAZ
  • MEMBER
Lets do below for a start to determine if its fuel or spark related issue and get back asap.

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, 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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Monday, May 24th, 2010 AT 6:28 PM
Tiny
INTERNETMECHANIC
  • MEMBER
Have a helper crank it, while you visually check for spark at the plugs. Pull a spark plug wire off plug, use a known good plug or spark tester in the boot. Ground metal part of plug/tester to metal part of engine. Engine cranking, watch for spark. If no spark, check for primary voltage to coil, dark green wire with black tracer. The coil and injectors get primary voltage from asd relay, that doesn't mean the relay is faulty. You would have to check relay circuits. Also, check mil codes, if you haven't already.


http://www.2carpros.com/forum/automotive_pictures/512072_laredo_mil_1.jpg

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Monday, May 24th, 2010 AT 6:34 PM

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