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Old 09-08-2013, 08:25 PM   #1
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no spark/no fuel pressure

i have a 1997 tj 4.0sport i was driving and it just died. I check fuel lines and all look good.The fuel pump is less than a year old and i replaced the coilpack but still no start. I plan on taking it to the shop but if yall can help me it would save me alot of money...............

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Old 09-08-2013, 09:49 PM   #2
Knows a couple things...

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That makes me think bad Crankshaft Position Sensor which provides the engine's master timing signal. When the computer doesn't get its expected signal from the CPS, it disables the ignition and fuel pump. The CPS is mounted up high on the driver's side where the transmission bolts to the engine.

Good luck with it, I hope it is something that inexpensive to fix.

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Old 09-10-2013, 06:20 PM   #3
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thank you so much...
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Old 09-10-2013, 07:47 PM   #4
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If you PM me with your email address I can send you the testing procedure for that sensor.

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Old 09-15-2013, 02:10 PM   #5
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thanks guys i found the problem. a wire was on the exhaust and melted witch was shorting out my fuse.
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