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1997 Grand Cherokee Water Pump Problem

5 messages,  Last post on May 11, 2009 at 2:38 PM

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What is this discussion about? Jeep Grand Cherokee, Jeep Grand Cherokee SRT-8, SUV

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#3 of 5 Re: 1997 Grand Cherokee Water Pump Problem [97veck] by green27614 Jul 03, 2008 (6:29 pm)
Replying to: 97veck (Jan 25, 2008 6:36 am) Here is your problem- You have air in the system.   When replacing the water pump you obviously have to refill the system with the proper mix of antifreeze.   When doing so you MUST remove the bleed screw when refilling the radiator.   this bleed screw is found on the upper radiator hose inlet.   Remove the bleed screw. fill the overflow tank fill the radiator with antifreeze. when antifreeze starts coming out of the bleed screw hole put the radiator cap back on and replace the bleed screw.   Start the truck up with the heater on FULL high temp. Let it get to operatoing temperature. Turn it off. Let it cool off. During this process any needed antiffreeze will be sucked into the radiator. Refill the overflow tank. repeat tis process at least three times to remove all air from the system...   Hope this helps- I just had to do this in the middle of a shopping mall parking lot!! fortunately I worked as a mechanic at one time (mostly on foreign cars) and this was a normal problem for any vehicle with a closed lop cooliong system.
#4 of 5 Plastic Impelled Water Pumps by frumunda Mar 04, 2009 (6:17 pm)
For those of you who have had the misfortune of dealing with the "plastic impeller on the water pump" issue, there is an upgrade. GMB makes the reman water pump to cure that ill. It is the original pump casting but with a new STEEL impeller. BMW and Mercedes have also been those nasty culprits that enjoy putting the plastic in their cooling systems. Its my opinion that it my be a German thing.
#5 of 5 Help with 97 Grand Cherokee bypass hose on water pump by lunytnz May 11, 2009 (2:38 pm)
I'm trying to replace the water pump on my 97 GC with a 5.2 V8. I have everything removed from the old pump except the bypass hose (a 1" dia hose about 4" long, from the top of the pump to the block). I can't move the hose clamp up the hose because there's not enough room under the big aluminum bracket that the AC compressor and alternator are mounted to.   I tried removing the big aluminum bracket, but can't get it. Maybe I'm missing a few bolts, maybe behind the water pump?   I would like to replace the bypass hose while I'm in there, but I will definitely need to remove the bracket to do that. Any help would be greatly appreciated! What I thought would take a few hours has already taken much longer and I don't even have the old pump out yet!

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