definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
21,778 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2001 Jeep Wrangler engine problems

engine problem

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2001 Jeep Wrangler Owner Comments

problem #9

Jul 152011

Wrangler 4WD 6-cyl

  • 83,000 miles


I have an 01 Jeep tj Wrangler, I have recently noticed a drop in performance along with slowly vanishing coolant. Several days ago while in traffic, the oil pressure dropped low enough to set off the check engine light. As soon as I began driving again the oil pressure raised high enough to to clear the light. However as soon as I came to the next light the oil pressure dropped and the check engine light came on again. Upon returning home I looked up the symptoms on the internet and it all led me to a very common cracked head between the 3-4 cylinder. I was all too surprised to find out how extremely common that is.

- Carroll, OH, USA

problem #8

Mar 152008

Wrangler 4WD 6-cyl

  • Manual transmission
  • 71,000 miles
I bought the vehicle in May 07. 2001 Jeep Wrangler sahara with 4.0L. @ months after buying the vehicle I lost oil pressure. Vehicle returned to dealership and the oil pump was replaced. Less than 500 miles I returned the vehicle to said dealer with a nasty internal engine rattle. Dealer replaced collapsed lifter and bent pushrod. Less than 100 miles later vehicle returned to dealer again with the internal noise. Vehicle torn apart and had the camshaft, lifters pushrods replaced. It has been 7500 miles since my last visit. I now have a slow coolant leak that is making its way into the oil system. I have removed the cylinder head and found a crack in the casting. The casting # is 0331. I have spent numerous hours researching this specific casting # and it is notorious for cracking and slowly leaking coolant into the oil system. My Jeep only has 71,000 miles!! this is an absolute let down and has tarnished my outlook on Chrysler and the quality of their products. The typical lifetime for these heads is between 60-85,000 miles. Do a search for Jeep 0331 on google, you'll see the overwhelming number of Jeep owners with this problem. Chrysler needs to be held responsible for their lack of quality and manufacturing and selling a defective product.

- Troy, IL, USA

problem #7

Sep 012004


  • miles
2001 Jeep Wrangler has corrosion in the electrical box, air bag is corroded, problems with the wheel bearings and oil leak. On the day of purchasing the vehicle there was a brake problem. There was a leak behind the passenger seat which caused the corrosion.

- Unknown, DC, USA

problem #6

Oct 212000


  • Automatic transmission
  • 42,000 miles


I bought my Wrangler in October 2000, which was a new 2001. Up until this year, 2004, I have been losing coolant fluid from the reserve bottle. The dealership which the vehicle was purchased, bill deluca Chrysler, Plymouth, Jeep, Inc., in havehill, MA, tested it right through my warranty expiration. It was not until I broke down in ct, where another Jeep dealership, georgetown Jeep dealership, told me about a dye test should be performed. When I went back to my original dealer, I had to argue with them to perform the dye test, because they wanted to pressurize my Jeep...again. When they performed the dye test they found the head gasket leaking and told me I had to pay for it. Eventually, through complaining the this problem should have been found on my previous visits before my warranty expired, they did a "good will" job. I still ended up paying a good portion. Two months later my engine seized and it was described, from deluca dealership, as a major engine failure and I would require a new engine. When they brought the problem to their chyrsler rep., the person told them I only needed a short block and not the full engine. Though I was told I needed a full engine, I was only given a short block. I asked the dealership if I still had full engine warranty and I was told yes. As time went on, I was still losing coolant. I eventually moved to another state. When I brought it to a new Jeep dealership, georgetown Jeep, in norwalk, ct, they could not find anything at first. I gave them the okay to dismantle my engine to look deeper. What they found was a crack in my engine. They told me it was insane I did not receive a full engine. Chrysler and deluca refused to pay and I ended up paying $2000. I was told this crack was there for quite a long time and possibly upon inception of the vehicle. I have wrote to Chrysler and they still refuse to help standing by their original word. Customer service would not even help me after repeatedly calling.

- Norwalk, CT, USA

problem #5

Jul 262002


  • miles
While driving at 65mph on flat surface and no warning vehicle will shut off, and will be hard to start back up. Dealer notified.

- Normal, IL, USA

problem #4

Jun 032002

Wrangler 4WD

  • miles
Consumer states the camshaft sensor is binding and breaking, causing the vehicle to stall.

- State College, PA, USA

problem #3

Feb 012002


  • miles


Vehicle will shut off while driving at any given time. Consumer took vehicle to dealer and left the vehicle there for a month. Dealer could not find the problem. Consumer took back vehicle, and had not drove vehicle since.

- Ware, MA, USA

problem #2

Nov 012001


  • miles
While traveling at or above 40 mph, engine will stall unexpectedly, causing a loss of steering and braking control. Dealership has examined vehicle and determined tat camshaft was faulty. This component is on national back order. Please provide any additional information / attachments.

- Mesa, AZ, USA

problem #1

Jul 222001

Wrangler 4WD

  • miles
The service rep stated the problem arised from a camshaft sensor binding and breaking. I was a little confused so she showed me the broken part. The problem occurred because the signal from the sensor was lost do to its shaft binding and some of the fins snapped off. This could have been very dangerous since it stalled the vehicle. It could of happenned on the interstate during rush hour traffic 5 minutes earlier. Daimler/Chrysler didn't share my concerns and stated I had a warranty. Copy of my complaint to daimler and reply available by E-mail.S.

- San Diego, CA, USA

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