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Old 01-17-2012, 09:04 PM
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Originally Posted by Sideways99
How much play/rotation should i be able to get out of my front ds when in park?
The back twists a little but the front seems a bit sloppier than it ought to be.
From what I've been told. Barley any.like 1/8th I think
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Old 01-17-2012, 09:08 PM
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Originally Posted by ECrawford
I scanned the check engine light and brought up the ecm unit as faulty. As for the battery its just been replaced recently with a optima battery which meets the cca for the vehicle. This Cherokee started right up and ran like a champ just before dieing on me the other day.
The bad pcm code u got is common, I see it often at work. The pcm will need replaced. However it "usually" don't cause no start concerns. That sounds like poor connections at battery.
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Old 01-17-2012, 09:13 PM
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Originally Posted by Zacks98
From what I've been told. Barley any.like 1/8th I think
well i got way more then that, how can i fix it?
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Old 01-18-2012, 09:28 AM
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Originally Posted by bsmith97xj
The bad pcm code u got is common, I see it often at work. The pcm will need replaced. However it "usually" don't cause no start concerns. That sounds like poor connections at battery.
There are MANY things that can cause that code to pop up, if you're replacing PCMs because of seeing that you're wasting customer's money.

That code means the code reader can't communicate with the PCM. Yes it could mean the PCM is bad, but like I said that's VERY rare on these trucks. Usually a bus error is caused by a faulty crank sensor (CPS). They're cheap so I would strongly suggest replacing that first if you're having starting/running issues. Also check the connector at the PCM for a good connection.

I've also heard backing out the screws below the connectors a couple turns has solved issues for some, so it's worth a try also.
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Old 01-18-2012, 09:59 AM
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Originally Posted by Sideways99
well i got way more then that, how can i fix it?
some rotation is normal due to gear tolerances in the differential and TC. Check the ujoints by twisting the shaft with one hand on each side of the joint. This is where there should be no movement.
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Old 01-18-2012, 10:23 AM
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Originally Posted by dukie564

There are MANY things that can cause that code to pop up, if you're replacing PCMs because of seeing that you're wasting customer's money.

That code means the code reader can't communicate with the PCM. Yes it could mean the PCM is bad, but like I said that's VERY rare on these trucks. Usually a bus error is caused by a faulty crank sensor (CPS). They're cheap so I would strongly suggest replacing that first if you're having starting/running issues. Also check the connector at the PCM for a good connection.

I've also heard backing out the screws below the connectors a couple turns has solved issues for some, so it's worth a try also.
Ive been a Chrysler Dodge jeep master tech for 10 years. I know communication problems when I see them. I thought the code he had was a P0601 pcm internal controller failure. That is a bad pcm no way around that fact buddy. I don't waste customers money. I am a professional.
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Old 01-18-2012, 10:59 AM
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well that's good then - just too many mechanics shops change parts till something works and disregard a proper diagnosis. I didn't mean to offend you
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Old 01-18-2012, 11:15 AM
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Originally Posted by dukie564
well that's good then - just too many mechanics shops change parts till something works and disregard a proper diagnosis. I didn't mean to offend you
Thats ok man! Your just lookin out for a fellow jeeper. I know all to well about those "mechanics" that are just a parts installers. It takes a true "Technician" to diagnose a real problem not just guess!!
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Old 01-18-2012, 12:46 PM
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Originally Posted by bsmith97xj
Thats ok man! Your just lookin out for a fellow jeeper. I know all to well about those "mechanics" that are just a parts installers. It takes a true "Technician" to diagnose a real problem not just guess!!
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Old 01-18-2012, 03:49 PM
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Old 01-18-2012, 04:44 PM
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Originally Posted by dukie564
some rotation is normal due to gear tolerances in the differential and TC. Check the ujoints by twisting the shaft with one hand on each side of the joint. This is where there should be no movement.
Yep ^ trying going ujoints first
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Old 01-18-2012, 11:18 PM
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Ok guys with this cps test does the engine have to be running? The wifes jeep won't start when hot. If this tests out I will move on to replacing the injectors as it may a heat soak issue.

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Old 01-18-2012, 11:50 PM
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Originally Posted by builtnotbought89'
Ok guys with this cps test does the engine have to be running? The wifes jeep won't start when hot. If this tests out I will move on to replacing the injectors as it may a heat soak issue.
Gonna be a smart ***.... How can it be running if it's unplugged? Lol
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Old 01-19-2012, 06:34 AM
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Does anyone know a good trick to cut the (remote) cable tie raps on the NSS!? Can see them, but cant get to them with anything (and the NSS threads are not dealing with this..)
Its the only thing keeping me from replacing it, and I'm NOT taking it to a shop for that...
Any advice?
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Old 01-19-2012, 09:25 AM
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Originally Posted by odgreen89on35s
Gonna be a smart ***.... How can it be running if it's unplugged? Lol
LoL if you didn't say it I was going to
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