Last post on May 20, 2013 at 1:06 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee
What is this discussion about?
Jeep Grand Cherokee, Jeep Cherokee, SUV
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
#4005 of 5134 2001 jeep grand cherokee laredo
Mar 22, 2008 (7:43 am)
I have a 2001 jeep grand cherokee laredo. About once a month while driving the car seems to slip and the check engine light comes on. The car runs funny after that and the idle races up and down. The code is DTC PO320 . If i disconnect the battery and erase the code, the car runs fine after that, although it still idles a little funny. I really like this car and this drives me crazy. Can somebody help me?
#4006 of 5134 Re: 2001 jeep grand cherokee laredo [tireman3]
Mar 22, 2008 (8:29 am)
On some of the '01s the crank position sensor has been known to fail - I think it was on the 4.7s. Look up the PO320 code. I did some looking it could also be transmission related...
#4007 of 5134 Re: 2001 jeep grand cherokee laredo [blankster]
Mar 22, 2008 (8:43 am)
#4008 of 5134 Re: 2001 jeep grand cherokee laredo [tireman3]
Mar 22, 2008 (12:14 pm)
I have a 2000 Laredo in the shop right now for similiar issues. Your code is for the crankshaft sensor. My codes were 1732 and 1784. Which are the presure switch circuit. My Tranny would slip and the MIL would come on. I would reset it with my scanner and all was good. The problem kept getting worse until all i had was 1st, 2nd and reverse. The solenoids and clucthes in tranny are bad. Usually not that expensive, but I had torque converter issues as well. Go to actron.com and look at their scanners. You can link to sites for used ones or check autozone. I just moved to NC from Detroit and before I moved I bought an actron superscanner at Murray's that the employees used on customers cars. It is about $350 new. I paid $86. It has more than paid for itself. The superscanner not only gives you the code but tells you what it is. On top of that you can plug it in while you are drivving and it montors the functions of the vehicle. It also tells you if your car will pass inspection in states that require them. Good luck.
#4009 of 5134 Re: Did I make a mistake buying a Jeep???? [cavman2x]
Mar 24, 2008 (11:13 am)
I currently own a 2001 limited 4.7. I have had no problems that you have stated. I am not a mechanic bu have owned and work on 4 Jeep's in 20 year's. My guess and have had this problem with my 87 commance ( bad power steering pump ) Dealer replaced, no noise. I have had problems with getting things fixed from Jeep dealer's in the past. My advise, go to another dealer. I have a Chrysler/ Dodge dealer that services Jeep. They have been excellent, my last Jeep dealership gave me the run around, didn't fix problems, and charged me for things that should have been covered under my warrenty.Good luck.
#4010 of 5134 Re: 50 MPH Engine Rattling/Knocking [badjeep1]
Mar 24, 2008 (11:16 am)
Sonds like a bad knock sensor, easily fixed at a good dealship.
#4011 of 5134 Re: Back again from the dealer [nikiblue]
Mar 24, 2008 (11:23 am)
I have owned 4 jeep's in 20 years. I will try and help. I have not had this shaking at stop. Does it feel like a shake in the steering wheel? could be warped front end rotor's associated with the brakes. I have loved my Jeep's, if I did not i would not be on #4.
#4012 of 5134 Re: Rumbling Sound In Rear Of 1998 JGC [tkl2]
Mar 24, 2008 (11:26 am)
Inspected the rear diff, it may have a bad gear. Have it checked by someone else.
#4013 of 5134 Re: [teddhunt]
Mar 24, 2008 (11:30 am)
How many miles are on this Jeep? Original factory liquid shocks are only good for 30,000 miles and should be replaced with gas shocks. I have monroe gas matic. They give a firmer ride but the handeling is much better. You will get a thump on a large bump, this is from the shock cushion.
#4014 of 5134 Re: Wanting to Buy [sonyayjo]
Mar 24, 2008 (11:38 am)
I bought my 2001 limited with 48,000k on it in 2005. I know about these problems having owned 2 Jeeps previously. I have had no trouble with mine. It now have 73,000k and I pull a boat. I did change the front pads to Bosch ceramic since metallic pads wear out the rotors and it is easier/cheaper to change pads than rotors. Good luck>