Last post on Jun 01, 2013 at 11:25 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee
What is this discussion about?
Jeep Grand Cherokee, Jeep, Electrical, SUV
#27 of 160 1993 jeep Grand cherokee PCM?
Nov 25, 2007 (8:29 pm)
Humm, Interesting thought. I never thought of a NSS before.Dosent the NSS keep the starter from working? It will crank over when use the key but I will try to see if it does when I run it in the gears? So if it continues to start while in gear should I replace the NSS at that point? What if the same thing continues? Is the factory alarm system integrated in the PCM? Because when I got another PCM from the bone yard they asked if it was a factory alarm..? all I know is it has the key card by my knees and when I pull it out it disables the starter. The horn doent beep or anything like that.
Where is your website link? just in case I find the NSS to be the problem
#28 of 160 no start
Nov 29, 2007 (4:25 am)
I am seeing the same problem mine has no communication to my scanner also I have no gas gauge or volt meter woking with key on. I have had my pcm reconditioned and that did not make any difference. Mine died just driving down the road will post any more findings.
#29 of 160 Re: no start [osman1]
Nov 29, 2007 (4:39 am)
Listen i let the dealer look at got the story that they need 2-3 hours and it turned out to be the PCM. I have ordered one (New one) from a company in the states that takes your serial number, color of ignition key and programs it. I will be getting it this week and can let you know. I parked my jeep one night turned it off, next morning would not start. The symptons you are telling me are the exact same ones I had with the exception it did not die on the road. The dealer also said the scan tool would not communicate with the cluster, pcm, tpm .. thats why they wanted 2-3 hours.
#30 of 160 Re: PCM Module Replacement [srtstp557]
Dec 21, 2007 (9:13 am)
the voltage regulator is bad and it is located inside the pcm hurry and replace it before it quits. everdrive.com has them for cheap.
#31 of 160 Re: PCM Module Replacement [dulyd]
Dec 23, 2007 (6:53 am)
Well after checking over everything my crank position sensor was internally shorted causing a back feed the pcm causing a loss of communication to the scanner. I replaced sensor all is well.
#32 of 160 Re: PCM Module Replacement [osman1]
Dec 24, 2007 (2:28 am)
I tell you I did the exact same thing after the PCM did not correct the issue (as directed by my dealership which cost me 300.00 bucks to diagnose) and the sensor fixed everything. For all those folks out there that have a similiar problem, change the sensor first - its cheaper and likely the cause.
#33 of 160 Re: 2000 JGC - will not start [cgsanford]
Dec 27, 2007 (11:29 am)
I had the same problems with my '97 Grand Cherokee, I did have the PCM replaced, I bought it from the dealer thinking that any mechanic could install it, I was wrong, only the dealer had the computer that programs it to your car. It helped somewhat, but still it starts sluggishly.
#34 of 160 your 97 JGC PCM
Dec 27, 2007 (4:32 pm)
When you buy a new computer you just have to supply the serial number to your jeep and they can program. I live in Canada and ordered one from Florida for 280.00
The crank position sensor solved all the problems and I didn't need a computer, the dealer was wrong. www.autotrans.com is where you can get reasonably priced parts.
#35 of 160 IS MY ""CAMSHAFT SENSOR", OR ""PCM"" BAD ??
Jan 22, 2008 (3:41 pm)
I HAVE A 93 JEEP GRAND CHEROKEE, 5.2 ENG.... TO START MY JEEP I HAVE TO TURN THE KEY ON, AND DEPENDING ON HOW COLD IT IS OUTSIDE, I WAIT SOMETIME HALF AN HOUR, THEN I GET CLICKING COMING FROM MY FUEL PUMP RELAY AND AUTO SHUTDOWN RELAY FOR ABOUT 3 MIN, THEN MY CHECK ENGINE LIGHT COME ON, AND I CAN START MY JEEP, AND IT RUN FINE.... HAS ANYONE ELSE HAD THIS PROBLEM??
Jan 29, 2008 (4:36 am)
I have a 1997 jeep grand cherokee with a 6 cyl engine. the check enging light came on and when the code was checked it said "Direct battery input to PCM was disconnected within the last 50 key-on cycle. Does anyone know what this means. The engine still runs good. I unhooked the battery hoping that the light would go away. It's still on. Could a sensor be causing this?