2000 Cherokee Wont start after sitting

chelms27

NAXJA Forum User

Location

Elkhorn, Nebraska

• Jul 20, 2009

• #1

I was on vacation for 2 weeks and my 2000 XJ wont start. It has fuel pressure, new injectors, it turns over but nothing. I have had this problem in the past with my 97 and my 98 and it was the CPS. Do you all think that this is my problem. If not do you have and suggestions? Thanks

The jeep is a 2000 4.0 auto

 

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winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Jul 20, 2009

• #2

You could try inplugging and replugging the CranK Position sensor a few times in case it is tarnished a little. I assume it worked good with the new injectors for a while before it sat for two weeks and wouldn't run. Since this is not currently intermittant, you can check the CKP with an ohmeter.

 

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winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Jul 20, 2009

• #3

Stolen from someone else:

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.

Since picture didn't paste. A is at left, b in the midde, and C on the right when looking into plug with latching finger on top.

 

chelms27

NAXJA Forum User

Location

Elkhorn, Nebraska

• Jul 20, 2009

• #4

Ok, I put the ohm meter on there and I am getting a reading of 725. Does this mean its no good? Thanks for the replies

 

chelms27

NAXJA Forum User

Location

Elkhorn, Nebraska

• Jul 20, 2009

• #5

Incase I was not clear the sensor I called a CPS is a crank shaft positioning sensor.

 

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winterbeater

NAXJA Forum User

Location

Royal Oak, Michigan

• Jul 20, 2009

• #6

chelms27 said:

Ok, I put the ohm meter on there and I am getting a reading of 725. Does this mean its no good? Thanks for the replies

Click to expand...

I've got to think the CPS is bad. It SHOULD read the same as if you hold your two probes out into the air with no contact. You are showing continuity. Maybe if you take your meter down to the parts store, they would let you test a new one.