It seems that we have something in common besides the make and year of the car. I too have had a problem with leaking coolant, but no one seems to be able to find the problem. I have had the system pressure tested and no leak was found. After hearing about the head gasket, I wonder if that is my problem. Anyone get anything definitive on this, or is it just another issue that was resolved in a later model year?
I also had the coolant leaking out of my 2000 Grand Cherokee. I had the water pump replaced and have not had a problem since. I hope that this helps.
I just recently had a coolant leak and it was diagnosed as a water pump leak. This may be it, also they found out my rear axle has a leak too, that's isn't much to fix though.
I have also had a slow coolant leak problem for some time now in my 2000 Jeep Grand Cherokee. About 2 years ago we replaced the water pump. About 6 months later I started getting the low coolant warning, and about every 2 months I was adding more coolant. When we took it back in to the shop, they couldn't find any leak at first then came back and said it was the head gasket. So we replaced that. Now, it's about 5 or 6 months later and I got the low coolant warning light again. Sure enough, half a tank of coolant had leaked out. I was hoping to find out of this is a common problem in Jeeps, and hopefully find some possible causes and/or solutions online. So far, I don't see any new solutions that I haven't tried already.
I have a 2000 JGC with 63000miles, recently had the water pump replaced and the thermostat due to a leak at the bearing. Now I am having to refill the coolant resevoir every two weeks. There is no sign of an external leak, did a pressure test yeaterday and it held roughly 16lbs for 3 hours, talking with jeep mechanics no one can believe it is the head gasket, because they say it just doesn't happen on these rigs. Any ideas?
Found out it is a cracked head cylinder, very difficult to find, you might want to have a look at that.
Hello again... September 18th, 2005.
My name is Steve and I wrote the first read on this page regarding the Coolant leak, the wiper problem, the brake problem, the mileage problem, etc, etc... Has anyone out there found a resolution to any of these problems yet? I laughed out loud today while reading all the people that have the same problems with their JGC's... I feel like I belong to some pathetic club (smiling)...
Well I am up to 63,000 miles now and my Jeep is really starting to show her age. paint is fading, lots of little scratches, a few small grocery cart dings (man that irritates me), the roof rack is now dull and flaking, the siding is just hammered (looks a dozen shades of gray), the low coolant light comes on every two weeks now instead of three, and the molding on the rear inside passenger door has come loose somewhere because I can hear the wind starting to creep in.
Now the positives. It is still quick and fun to drive. In between the low coolant lights I still feel good when pulling up next to a junker. Oh and one other thing, My teenager is now old enough to wash it for me and that is just terrific.
I also have the 2000 GC, & I have a cracked cylinder head after finding a coolant leak. It is a very expensive repair; the car has 90k miles & the car has been well maintained. Also have been told by my mechanic that this is very rare in these models. After reading these posts, that doesn't seem to be the case, caveat emptor. My wife wanted to sell this car after we replaced the fuel pump & rear bearings last year. I guess I should have listened to her.
I have a 2000 Jeep Grand Cherokee Laredo... You wouldn't believe it... it has 223,214 miles on it!! (must have been built on a wednesday) the engine is the original in-line 6 4.0L. at about 210,000 miles the transmission was replaced with a new one, and that is the only major repair! I have no problems what so ever taking it out of town, or out of state. it runs better than my '98 ford explorer ever did (which I traded for the JGC)... I change my oil every 3000 miles, keep it clean, however I am not the easiest on the rig, I use 4x4 quite often, and I live out in the country. so it is driven quite a bit on dirt and rough roads. and still, there is not even a squeak. all you have to do to make a Grand Cherokee last is keep up on the maintenance, and it will last a lifetime!
I had one given to me with a blown 4.7L motor. A new one was going to cost $4500.00, so I sold it as fast as I could.
At 96,000 miles the head gasket went out and the dummy kept driving it. When we opened the motor up, the heads were bad, the rear pistons were mutilated, the connecting rods were broken, and the cylinder wall on the back drivers side was missing a 4x3 inch section.
For those of you who don't already know, the heads are aluminum, the pistons are also aluminum, and the connecting rods aluminum. If the timing goes, a gear and chain set is $1000.00 just for the parts. I would advise anyone who owns one to sell it ASAP.