Question about Jeep Cherokee
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Posted on Jan 02, 2017
I am going to assume that it will not run even if you push on the accelerator pedal?
Can you install or attach an old timing light to the spark plug wires, turn it one and try to start it. The light should flash with the engine running, but if it shuts off at time of engine die, and the engine is still spinning, you are losing spark, My suggestion is the cranks shaft sensor on bell housing.
Second, install a pressure gage on the test port on the fuel rail and watch it as you start the engine, fuel pressure should not drop as the engine dies, if it does, the pump is not working correctly. There are two modes of power to that pump, one to start and timed, for only a few seconds to prime the system, and one to run continuously. Find the wires going to the pump at the tank. Connect test light to those wires and watch what happens during crank and at stall, You should not have the pump shut off and the engine dies.
If you have spark, and fuel pump working, when did you last change the filter,,but I put that LAST.
It has to be one or the other of these.
Posted on Aug 04, 2008
Crankshaft Position Sensor most likely, that's what it was with me. It is a pain to change so good luck. If that does not work you may look into: Camshaft Sensor, Fuel Pump/Filter, Injectors
Posted on Aug 04, 2008
It could be that you got some water on your serpentine belt and that will cause it to squeak. Try buying a can of "belt dressing" from an auto store and spray it all over your belt and see if that will stop it. It's a cheap and easy thing to try before replacing expensive parts. Hope this works for you, let me know how it goes. Goodluck!
Posted on May 05, 2009
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