Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Troubleshooting/Problems

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 10-23-2012, 11:59 AM
Member
 
Join Date: Oct 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 703
99JeepGCLimited is on a distinguished road
99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

I have a 99 Jeep Grand Cherokee Limited With 4.7L. Yesterday morning when my wife was taking our son to school it died on her while she was driving, so I went and towed the car home and I just first decided to change the fuel filter. Which was 29$ and that didn't fix the problem, so then I decided to check the OBD II and I got an error code that said, " Camshaft Position Sensor Bank A - Circuit Malfunction " So I replaced the CPS ( Camshaft Position Sensor 27$ ) And still had the same problem after erasing the codes and cranking the motor. After it cranked for about 30 seconds the check engine light came back on. So I asked a mechanic via telephone and he told me to change the Crankshaft Position Sensor 28.49$. I changed it and im still having the same problem. I checked all fuses and I tryed everyway possible to check for faulty wiring and still everything seems fine except the fact that my Jeep still won't start and I still have the Camshaft Position Sensor Code showing on it. Please if anyone has had this problem before and knows how to fix it or what I can do to run down the true problem without having to have it towed somewhere I would greatly appreciate it!
__________________

__________________
Reply With Quote
  #2  
Old 10-23-2012, 06:48 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,900
Thanks: 9
Thanked 91 Times in 86 Posts
Rep Power: 525849
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

Welcome to the garage.
Did you use an OEM camshaft sensor? Sometimes non OEM give problems.
I would disconnect the battery and remove/check/clean/install the connectors on the PCM. If that all ok, and you´re sure the wiring is ok and not damaged somewhere, i would say its or the PCM itself or the right camshaft is not turning. The last one is quite rare, but there is a small pin on the camshaft which should hold the sprocket, and if its broken or the sprocket bolt loose, the shaft will stand still and you get a camshaft sensor fault. This last one would be the ultimate thing to check when it was me.
__________________

__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #3  
Old 10-23-2012, 09:20 PM
Member
 
Join Date: Oct 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 703
99JeepGCLimited is on a distinguished road
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

Well I did a few more things today and come to realize that I'm not getting any fire to any of the coils so I did take out the PCM and looked around all day for one at a salvage yard and come up unlucky so I'm going to try to clean up the PCM and reinstall it see if that helps if not then I guess I'll be selling this jeep I'm not paying 600$ for a new PCM
__________________
Reply With Quote
  #4  
Old 10-23-2012, 10:03 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,900
Thanks: 9
Thanked 91 Times in 86 Posts
Rep Power: 525849
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

But i think that when you, for whatever reason, don´t have the cam signal, that you also won´t get any spark.
Maybe that 2005 JGC can chime in and give his ideas.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #5  
Old 10-24-2012, 01:25 PM
2005JGC's Avatar
Senior Member


My Jeep: 2005 4.7L WK
 
Join Date: Nov 2010
Location: Portland, OR
Posts: 2,751
Thanks: 51
Thanked 69 Times in 58 Posts
Rep Power: 1652969
2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

with a failed cam sensor you wont get spark or fuel, thats why the vehicle dies, I would make sure your connector is securely connected... also as Frank suggested, aftermarket sensors SUCK on chrysler products, so I would get a mopar cam sensor.

I wouldnt waste your time with the pcm... its not going to fix it

if you have a p0340 cam sensor fault your problem is very likely in either the circuit, or the sensor.
__________________
2005 Jeep Grand Cherokee - Gone but not forgotten!

Reply With Quote
  #6  
Old 10-25-2012, 10:31 PM
Member
 
Join Date: Oct 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 703
99JeepGCLimited is on a distinguished road
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

It does say circuit malfunction on the error code and if its in the circuit what does that mean?
__________________
Reply With Quote
  #7  
Old 10-26-2012, 05:45 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,900
Thanks: 9
Thanked 91 Times in 86 Posts
Rep Power: 525849
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

That there probably is an open wire in the camshaft wiring circuit. You probably have to measure the wires to see if there is continuity.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #8  
Old 10-26-2012, 09:14 PM
Member
 
Join Date: Oct 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 703
99JeepGCLimited is on a distinguished road
Well I bought the mopar camshaft and crankshaft position sensor and still not starting....


Sent from my iPhone using Tapatalk
__________________
Reply With Quote
  #9  
Old 10-27-2012, 11:43 AM
Member
 
Join Date: Oct 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 703
99JeepGCLimited is on a distinguished road
How do I check the continuity on the wires I have a ohm meter but I'm clueless to this sort of stuff


Sent from my iPhone using Tapatalk
__________________
Reply With Quote
  #10  
Old 10-27-2012, 04:31 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,900
Thanks: 9
Thanked 91 Times in 86 Posts
Rep Power: 525849
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

Disconnect the negative battery lead, then disconnect the respective connector on the PCM. You need the wiring manual to know on which points to measure. You just put one lead of the ohm meter on the respective camshaft sensor wire connector pin and the other on the same wire on the PCM connector. There should be 0 Ohm or very close to it. When the wire is open, there will be an infinite resistance. In that case, you should try to bend the wire a bit over the whole loom lenght, to see if the resistance will come back to 0 ohm, which could indicate a broken internal wire. There could also be a resistance of a few ohms, which could mean corrosion or dirt at a wire connection.
Attached the wiring schematic.
So you need to remove the connector C1 from the PCM. Then measure between points 17 from connector C1 and point 3 from the camshaft connector. Then between point 18 from connector C1 and point 1 from the camshaft connector. Then last between point 2 from the camshaft sensor connector to point 4 on connector C1. All should have a resistance of 0 ohm.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
KYB Gas-a-Just shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #11  
Old 10-27-2012, 11:05 PM
Member
 
Join Date: Oct 2012
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 703
99JeepGCLimited is on a distinguished road
Re: 99 Grand Cherokee Limited Camshaft Position Sensor Code Fix?

Thanks Ill Try This Tomorrow And Ill Get back with the results!
__________________

__________________
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Crankshaft Position Sensor Circuit n8jay Engine Performance/Intake/Exhaust 6 10-15-2013 06:55 AM
02 4.7 Throttle position sensor Thumper828 Tech Tips/DIY/How to 8 12-01-2012 01:03 PM
Where is Camshaft Position Sensor ftcomp Export & Diesel Powered Jeep Models 3 08-17-2012 04:47 PM
Camshaft Sensor ftcomp Export & Diesel Powered Jeep Models 0 08-06-2012 01:54 PM
03 jeep grand cherokee limited engine speed sensor problem lawnjockey Engine Performance/Intake/Exhaust 5 12-12-2011 06:38 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 11:52 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community