Coolant Leaking problems of the 2001 Jeep Wrangler

I bought this used with only 54,000 miles on the engine. Within a year and at 65,000 miles, it began overheating and leaking coolant. My brother thought it was a cracked head or gasket. After tearing the motor apart and sending the head to be checked, two large cracks were found. The casting # is 331. My brother has been trying to find another head for me and was told by one of the sellers that he can't keep the parts in stock due to the high number of demand for this part.

2001 Jeep tj, 40,000 miles, slowly losing coolant over the course of 4 yrs. Used a pressure tester and verified no external leaks. However, used the same pressure tester with engine running, per the instructions, and the system gradually built pressure from 18 lbs to 25 lbs before I stopped the test. This indicates coolant leaking into the combustion chamber. Currently my oil pressure is good and there is no coolant contamination on the dip stick or under the oil fill cap. At risk (long term) is the internal engine bearings: cam and crankshaft. I found a thread on the internet that covers many Jeep tj owners with the exact same problem of coolant loss. This is all due to a bad batch of cylinder heads with casting # 0331, manufactured from 2000 through 2006.

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.

Had vehicle for three yrs and in December started loosing coolant and couldn't find the leak. I took it to Jeep and told them the head gasket is going . They said they would check it out and later told me it was a airpocket. I picked it up and ran it for another week, still losing fluid. This happened of and on for 3 times. On the 3 time of me taking it back they admitted the head gasket was shot and they had to replace the head. I went to take it home and 1/2 way there my engine started making horrible noises and jerking. I called the dealership and had it towed back the next day. They then told me due to coolant contamination the engine was ruined and had to be replaced witch was covered under warranty. I now have 3410 miles on new engine and it has started making noise. Took it back to Jeep and the will not cover the warranty saying I have water and dirt marks in airbox. These were in there when they first replaced engine and I am now seeking legal counsel.

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.