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Cherokee Sport: possible alarm concern

Customer Question
1999Jeep Cherokee Sport will not...
1999Jeep Cherokee Sport will not start or fire possible alarm concern
Submitted: 8 years ago.Category: Jeep
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Answered in 6 minutes by:
6/18/2010
Jeep Mechanic: Richard, Jeep Technician replied 8 years ago
Richard
Richard, Jeep Technician
Category: Jeep
Satisfied Customers: 4,141
Experience: Over 26 years of experience as lead tech and shop foreman.
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Hello and welcome to Just Answer!

Have you pulled the coil wire out of the distributor and checked for spark there by holding it a 1/2" away from ground while someone cranks it over?

 

A oem security system will not disable spark or fuel pump, it only disables the fuel injectors.

 

When you turn your key on does the voltmeter, fuel gauge and check engine light work?

The check engine light should turn on when you turn the key on and then go off in a couple seconds.

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Customer reply replied 8 years ago

yes, no spark, replaced coil, no power to coil we dot not know if evs 11 is factory

fuel guage, voltmeter do not respond, not sure about check eng light

Jeep Mechanic: Richard, Jeep Technician replied 8 years ago

Can you disconnect the crankshaft position sensor and see if your volt gauge and fuel gauge work with the key on?

 

The crank sensor is located on the upper left side of the transmission bell housing at the rear of the engine block. You will need a light to see it. Follow the wires from the sensor until you find the connector and disconnect it.

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Customer reply replied 8 years ago
we are trying to do this getback to you asap
Customer reply replied 8 years ago

we lre trying to do this getback to you asap

unplugged sensor aand volt and fuel guage worked and check eng light is on

Jeep Mechanic: Richard, Jeep Technician replied 8 years ago
So, when the sensor was disconnected the voltmeter and fuel gauge started working, is this correct?
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Customer reply replied 8 years ago
yes
Jeep Mechanic: Richard, Jeep Technician replied 8 years ago

You need a crankshaft position sensor. These sensors will short out and take your PCM down. When the PCM is down, your voltmeter and fuel gauge won't work.

I hope this helps you, let me know!

Thank you,

Richard

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