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Jeep Grand Cherokee
#679 of 1240 2007 Jeep Grand Cherokee starting problem
Apr 08, 2010 (8:22 pm)
I just bought a 2007 Jeep Grand Cherokee that has a factory remote car starter. I am having a problem when I attempt to start the vehicle. It happens both using the remote car starter and the key in the ignition.
I go to start the vehicle and the engine begins to start but then starts sputtering and stumbling like its running out of gas or not engaging completely. It feels like the engine is half started. None of my lights are on. I have taken back to the garage and they cant find a problem and of course it doesnt do it while they have it. They checked it on the computer and no codes are active.
It happens both when its cold and when its hot. Any suggestions???
#680 of 1240 Give Us More Information
Apr 09, 2010 (5:30 am)
It helps to know which engine and how many miles.
Start with the free stuff first. I would remove the Idle Air Control Motor and clean with some carburetor cleaner and then re-install.
#682 of 1240 Stalling, Stuttering & Bad Coolant Sensor Alert
Apr 17, 2010 (2:21 pm)
I have been having problems since Nov.09 with my 98 GC.
In the last 3 weeks my jeep has been at the dealership 3 times.
They have replaced spark plugs, wires, distributor cap, 02 sensors, pcm, and an ignition coil(3rd one) and said they fixed my bad coolant sensor. I picked it up on Thursday and the bad coolant sensor popped on within 2 miles from dealership. My jeep is stumbling and stalling when I am going low speed or at a stop. Today it cut off on me while going over railroad tracks. Since so much has been replaced, is it possible that the bad coolant sensor is causing all of my problems? Today while being in line at the drive thru at my bank, the bad coolant sensor popped on and within seconds my jeep cut off.
Any ideas will be greatley appeciated.
#683 of 1240 Grand Cherokee- Idle issue
Apr 25, 2010 (2:06 pm)
Wondering if anyone can help. A few months ago, my 04 GC Laredo(4.0L) began stalling out of nowhere whenever I would come to a stop. If I was pressing the throttle, it seemed to work fine As soon as I got home the problem cleared up and didnt act up for a couple weeks. The second time, it threw a code. I scanned the PCM, and found code P0505(Idle Air Control). I replaced the IACV, cleared the code, and it seemed to be fixed. A couple weeks later, I got a MIL light again. Checked the code, and same thing. P0505. I was unable to reset the code with my OBD scanner so I tore into it again, and ended up cleaning the throttle body, and valve airway. As soon as I did this, I heard a big 'WHOOSH' as it seemed to clear the airway. The MIL light then shut off, and I was able to clear the code. A couple weeks later, the light came back with the same code. Everything I have read states that it either has to be the IACV, the wiring, or the PCM. The car seems to run fine, but it sputtered alittle bit when I was working with the connector. Also the throttle body seems to have some dark deposits on it again as well. Is there anything else, short of replacing the wiring harness, or valve connector, or PCM that could be causing this? I am suspecting the connector is bad, but not sure if you can replace just the connector. I like to work on my own vehicles, but I am close to taking it to a dealer for a fully blown diagnostic test, but I am afraid they will want to change the PCM, which I know is the most expensive option. Could a vacuum leak cause this? It is a very intermittent problem. For the most part the car runs fine, even when the MIL lamp is on, but it does occasionally stall out or idle very erratically when at a stop. I really want to get this fixed. Anyone have any ideas?
#684 of 1240 Re: Grand Cherokee- Idle issue [bradc1]
Apr 25, 2010 (4:55 pm)
i would check the crank case vent PVC valve on older cars seems as the 4.0 has a plastic tube with a orifice by the valvecover
#685 of 1240 Re: Grand Cherokee- Idle issue [bradc1]
Apr 26, 2010 (8:29 am)
You may want to check these few things below....
mine was not that bad. but it shut off like the key was turned off.... no studeer or misfire.... and it always started right back
got mine fixed with the very last option #3, I HAD TO REPLACETHE BRAIN (ECU) Got mine off ebay for $185 from
they will program, and ship for that price..... it has a lifetime warranty. It has to be programed for your vin #, part nbr, and mileage.... but they will tell you all that. It took about 35 minutes to swap the (pcu or ecu). worked like a charm.......
grand cherokee stalls or dies out.
1) CHECK YOUR CONNECTIONS AT THE ECU (ENGINE CONTROL UNIT) MAYBE CALLED THE PCU (POWERTRAIN CONTROL UNIT) ON THE PASSENGER SIDE FIREWALL. ON 1998 AND EARLIER THE 3 PLUGS SOMETIMES GET A BAD CONNECTION. IT IS USUALLY THE ONE CLOSEST TO THE FENDER. UNPLUG, SPRAY WITH CLEANER AND REPLUG. YOU MAY EVEN HAVE TO WRAP A ZIP TIE AROUND THE UNIT TO KEEP THE PLUG IN TIGHT.
2) THIS MAY ALSO BE THE PROBLEM, IT IS GOING TO SOUND SCREWY BUT THERE ARE TORX SCREWS ON THE 1998 AND EARLIER ECU. BACK THEM OUT ABOUT A THIRD OF A TURN, THE SCREWS ARE TOO LONG AND ARE CAUSING SOME KIND OF SHORT IN THE CONNECTION OR MAYBE THE GROUND.
3) FOR 1999 AND LATER
I had same problem.... 87,000 2000 grand cherokee 4.7l
when i let off the gas it might stall. happens 1 to 4 times a day.
so far i have
replaced the crank shaft sensor - it stopped stalling for 3 days $130
cleaned the throttle boddy free
replaced the throttle position sensor $72
replaced the idle air control sensor $132
replaced the map manafold airflow sensor $125
no luck it is still stalling. not sure if i remember the prices
right on these parts....
by the way i have done all the work myself. it was about 30 minutes for most parts.
i just ordered a rebuilt ecu or pcu engine control unit. they program in the vin, mileage and part nbr so you gc will recognize it. $185
we will see when that comes.....
IT CAME AND THAT SEEMS TO HAVE FIXED THE PROBLEM..... several months ... SO FAR SO GOOD
#686 of 1240 crank positioning sensor
Apr 28, 2010 (3:34 am)
where it located on 01 grand cherokee 4.7 v-8
#687 of 1240 Trouble starting in the morning???
Apr 28, 2010 (11:51 am)
I have replaced the battery, alternator and belts...Each morning the Jeep will crank, but will not start until I hit the gas pedal. Once it gets going, it will not idle so I have to keep the gas and break pedal held to shift into gear, which at this time still has a hard time going. The weird thing is when the Jeep is driven somewhat, it will start the next time throughout the day no problem??? I only have this problem in the mornings, but it seems to be getting worse. Has anyone else had this problem and if so how did you remedy this situation??? Please advise!
#688 of 1240 Re: 2000 Jeep GCL intermitent starting problems [jmunson76021]
Apr 29, 2010 (1:54 pm)
I know I'm really late replying, but if this helps someone else…Take it out of park and put it back / Make sure it's in park. I learned that after two tows and having an alarm system with a kill switch removed. Park doesn't always engage and you can't start the car when it thinks it's in gear.