Please Help....
#48
CF Veteran
Joined: Nov 2011
Posts: 1,290
Likes: 0
From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
#49
CF Veteran
Joined: Oct 2009
Posts: 2,867
Likes: 15
From: Fauquier County, Virginia
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Please buddy, tell that shop to pound sand and you demand they lower the price because they have screwed you from the get go. These people CLEARLY have no idea what is going on, and probably couldn't distinguish a sneeze from a wet fart. Monitor the CPS? There is NO WAY to 'monitor' a CPS. The only thing that can be done with it is to pull it and test voltage. You cannot simply look or hook it up and say 'yerp, it's workin'. This shop is sucking your money for nothing. Tell them you want the cost lowered due to their incompitence and lack of service as well as lying about it being ready, and that they are to put the gas in they burned driving it from their shop. Then tell them you want it delivered to your home. You can very easily replace the CPS in your driveway. IIRC, there is a write up for how to do it.
I really hope you get your XJ back on the road, and I truly feel for you. One bad thing after another, and then being taken advantage of by a shop. I personally do all my own work, and anytime my rig was in a shop it was a local guy I know and had previously worked at a Chryco dealer before opening his shop. He has done many free diagnostics for me even when he knew I was taking it home to do my repair, and has always been fast and stuck to the original quotes. And I would never second guess his work. If he does it, it's done right.
Edit: Here you go man. I went ahead and looked for them for you. If we can help out at all, don't hesitate to chime back in and ask.
https://www.cherokeeforum.com/f51/testing-cps-5563/
https://www.cherokeeforum.com/f51/je...-sensor-17310/
I really hope you get your XJ back on the road, and I truly feel for you. One bad thing after another, and then being taken advantage of by a shop. I personally do all my own work, and anytime my rig was in a shop it was a local guy I know and had previously worked at a Chryco dealer before opening his shop. He has done many free diagnostics for me even when he knew I was taking it home to do my repair, and has always been fast and stuck to the original quotes. And I would never second guess his work. If he does it, it's done right.
Edit: Here you go man. I went ahead and looked for them for you. If we can help out at all, don't hesitate to chime back in and ask.
https://www.cherokeeforum.com/f51/testing-cps-5563/
https://www.cherokeeforum.com/f51/je...-sensor-17310/
Last edited by 1991Jeep_Man; 04-03-2012 at 11:12 PM.
#50
Thread Starter
Member
Joined: Oct 2011
Posts: 121
Likes: 0
From: Eastern NC
Year: 1999
Model: Cherokee
Engine: 4.0L Straight 6
Alright I went back to the repair shop/dealer who has the jeep yesterday and talked to them about what they had found out. Basically their answer was nothing. They told me that this ignition module they were referring to before was actually integrated into the jeeps computer. I think they are going to try to take the "blame it on the pcm/ecu" route. He told me they had been leaving it hooked to the computer and running it till it gets hot and seeing if it would cut off. The only thing he said he noticed was the computer gets hot to the touch. Well have they never looked under the hood of a jeep? everything is close together. I could have come to that conclusion in my driveway using the back of my hand a flashlight with no batteries in it. So I told him I thought it was the CPS for sure. Their excuse was they wiggled it and it did fine. Well how to expect to wiggle something loose that is bolted in with two bolts? It is not about being loose...its about current. So he promised to call me yesterday and hasn't as of yet. So i called and talked to the shop foreman of the closest chrysler dealer (55 miles from home) and talked to him and explained everything it was doing and he told me the 5 volt signal the pcm gets disrupted by malfunctioning sensors and 99 percent of the time its going to be the crank sensor and you could wiggle it all day but its gonna do what it wants to do. He told me to tell the shop that has it now to not worry about the computer yet and change the crank sensor or either give me my car back.
Last edited by jeepxj99; 04-05-2012 at 11:20 AM.
#51
CF Veteran
Joined: Nov 2011
Posts: 1,290
Likes: 0
From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by jeepxj99
Alright I went back to the repair shop/dealer who has the jeep yesterday and talked to them about what they had found out. Basically their answer was nothing. They told me that this ignition module they were referring to before was actually integrated into the jeeps computer. I think they are going to try to take the "blame it on the pcm/ecu" route. He told me they had been leaving it hooked to the computer and running it till it gets hot and seeing if it would cut off. The only thing he said he noticed was the computer gets hot to the touch. Well have they never looked under the hood of a jeep? everything is close together. I could have come to that conclusion in my driveway using the back of my hand a flashlight with no batteries in it. So I told him I thought it was the CPS for sure. Their excuse was they wiggled it and it did fine. Well how to expect to wiggle something loose that is bolted in with two bolts? It is not about being loose...its about current. So he promised to call me yesterday and hasn't as of yet. So i called and talked to the shop foreman of the closest chrysler dealer (55 miles from home) and talked to him and explained everything it was doing and he told me the 5 volt signal the pcm gets disrupted by malfunctioning sensors and 99 percent of the time its going to be the crank sensor and you could wiggle it all day but its gonna do what it wants to do. He told me to tell the shop that has it now to not worry about the computer yet and change the crank sensor or either give me my car back.
#52
Ugh. The CPS is a Hall-type sensor and 99 times out of 100 it's the sensor that goes bad, not the wiring. I really hope they're not charging you for all this wire wiggling and feeling around for warm spots. Your next post should read...
If you continue letting this "$mechanic$" fumble blindly for a solution it's going to cost you a fortune, which, I'm sure is their objective.
I got adventurous and replaced the CPS myself. It only took about an hour and cost about $80 and my Jeep runs perfectly again! Thank you all so much for your advice. Next time, I promise not to doubt you.
#53
CF Veteran
Joined: Nov 2011
Posts: 1,290
Likes: 0
From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by F1Addict
Ugh. The CPS is a Hall-type sensor and 99 times out of 100 it's the sensor that goes bad, not the wiring. I really hope they're not charging you for all this wire wiggling and feeling around for warm spots. Your next post should read...
If you continue letting this "$mechanic$" fumble blindly for a solution it's going to cost you a fortune, which, I'm sure is their objective.
If you continue letting this "$mechanic$" fumble blindly for a solution it's going to cost you a fortune, which, I'm sure is their objective.
#55
CF Veteran
Joined: Nov 2011
Posts: 1,290
Likes: 0
From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by 1991Jeep_Man
Hmm...... are these the mechanics?
I hope these a$$ scratching mechanics see this thread about how related they are
#56
CF Veteran
Joined: Oct 2009
Posts: 2,867
Likes: 15
From: Fauquier County, Virginia
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
They don't figure?? No, makes no sense at all that a plastic box bolted the the fender on the same side as the exhaust manifold would get hot after having the vehicle run and just sit there at idle. Maybe they should make sure the exhaust manifold is hot to? The tongue method works best. Good God Almighty...
#57
Quadratec sells the OEM Chrysler CPS (PN: 56027866AE) for $100, I know it can be found cheaper with a little searching or you can go with the cheap-o ChinaZone (AKA: AwfulZone) Duralast version like I did, which was only $28 but I've been told that it was prone to failure before I ever took it out of the box. It's been fine for the past 4 months, though and I've gotten so good at replacing it that it now only takes me about 10 minutes, start to finish.
#58
CF Veteran
Joined: Nov 2011
Posts: 1,290
Likes: 0
From: phoenix az
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by F1Addict
Quadratec sells the OEM Chrysler CPS (PN: 56027866AE) for $100, I know it can be found cheaper with a little searching or you can go with the cheap-o ChinaZone (AKA: AwfulZone) Duralast version like I did, which was only $28 but I've been told that it was prone to failure before I ever took it out of the box. It's been fine for the past 4 months, though and I've gotten so good at replacing it that it now only takes me about 10 minutes, start to finish.
#59
Thread Starter
Member
Joined: Oct 2011
Posts: 121
Likes: 0
From: Eastern NC
Year: 1999
Model: Cherokee
Engine: 4.0L Straight 6
Dear sweet Jesus,
They don't figure?? No, makes no sense at all that a plastic box bolted the the fender on the same side as the exhaust manifold would get hot after having the vehicle run and just sit there at idle. Maybe they should make sure the exhaust manifold is hot to? The tongue method works best. Good God Almighty...
They don't figure?? No, makes no sense at all that a plastic box bolted the the fender on the same side as the exhaust manifold would get hot after having the vehicle run and just sit there at idle. Maybe they should make sure the exhaust manifold is hot to? The tongue method works best. Good God Almighty...