96 Cherokee Starting Problems... - JeepForum.com

 
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post #1 of 7 Old 08-29-2011, 07:21 AM Thread Starter
DantheMan72
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96 Cherokee Starting Problems...

He's an odd one...My jeep is having problems starting in a reliable manner. It will start up and go some where, but if I stop somewhere and turn it off, come back, it won't start back up, BUT if I wait 30 to 45 minutes, it starts up fine.

It does this constantly, go, stop. Nothing. Wait, go...fine. The weird thing is, I can get at least one shut off before it refuses to start up again. Like when I'm getting gas, but if do anything like go to the grocery store, it won't start when I'm ready to leave.

The problem is, when it won't start, all I do is wait 30-45 minutes and it starts up fine. What gives?

I have replaced the cam & crank sensors recently.

I'm a new guy here so sorry for the rambling, just trying to make my problem as clear as possible and hopefully find a cure for as little as possible.

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post #2 of 7 Old 08-29-2011, 08:14 AM
CJ7-Tim
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When your Jeep won’t start :

1) Do all the gauges display correctly when it is not starting, or does the fuel gauge and/or voltage gauge not work at all, or not display properly ?
2) Have you tried wiggling the automatic transmission shift lever when you try to start, in both PARK and NEUTRAL ?
3) When you turn the key does nothing happen, and you hear no sounds ?
4) Does the starter not engage, and you only hear a clicking sound from under the hood ?
5) Does the starter engage, make the starter sound, and cause the engine to turn ?
6) Does the engine sputter and try to run, or does it not run at all ?



Answer yes/no to all.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
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post #3 of 7 Old 08-29-2011, 08:37 AM Thread Starter
DantheMan72
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I've not noticed anything funky with the gauges, but will now take notice when it happens again.

Have not but will try the wiggling.

As for the rest, there is [I]nothing unusual; the only unusal thing is the not starting.

I will give some of these a try the next time it acts up.
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post #4 of 7 Old 08-29-2011, 08:47 AM
CJ7-Tim
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Describe the no-start in common terms. Do you mean you turn the key and absolutely nothing happens ? No beeping or flashing lights on the instrument panel and the starter makes no noises at all ?

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
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post #5 of 7 Old 08-29-2011, 08:50 AM Thread Starter
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Ok...when i turn the key, it makes the usual sounds of turning over; gauges and lights are all normal, just not sparking, i.e. starting.
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post #6 of 7 Old 08-29-2011, 09:09 AM
CJ7-Tim
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Quote:
Originally Posted by DantheMan72 View Post
Ok...when i turn the key, it makes the usual sounds of turning over; gauges and lights are all normal, just not sparking, i.e. starting.
This is most commonly caused by a faulty Crankshaft Position Sensor (CPS) on the transmission bell housing. The fault may be in the sensor itself, in the sensor connector/wires, or in the circuit shared by the other sensors.

Naturally all your tune-up parts should be new within the last 30,000 miles.

Cheap sensors from Advance/IdiotZone/PepBoys have been failed or out of specification right out of the box. I suggest testing the CPS and inspecting its wires. Genuine Jeep and NAPA have proven to be the best quality parts for sensor replacements.


CPS Testing


Crankshaft Position Sensor Connector (CPS/CKP)



.



TESTING PROCEDURE 1991 2001 4.0L H.O. engines

1. Near the rear of intake manifold, disconnect sensor pigtail harness connector from main wiring harness.
2. Place an ohmmeter across terminals B and C (See Image). Ohmmeter should be set to 1K-to-1OK scale for this test.
3. The meter reading should be open (infinite resistance). Replace sensor if a low resistance is indicated.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
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post #7 of 7 Old 08-29-2011, 09:12 AM Thread Starter
DantheMan72
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WOW! thanks! I just replaced the blasted thing, but it didn't cost me anything so I guess it's no biggie.

THANKS!
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