Question about 1987 Jeep Cherokee

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When i let off the gas then get back on sometimes it clunks hard or when i was going up a hill i was on the gas hard and let off it clunks.i had the jeep parked and i checked and moved the driveline to check if it was a u-joint and the driveline is tight and no clunking so im not sure what it could be?

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When I had problems going up a hill at near maximum gas,I found out it was a blown/bad piston.Mine did not clunk but it easily could cause that.Mine also worked fine on flat surfaces and tougher on somewhat steep hills and incapable of going up very steep hills,and they were paved roads.If you notice a more than normal power reduction going up hills compared to say a couple of years ago,that is probably it.I would recommend calling a couple of local shops,tell them your problem and what I suggested,and see if they agree.If you are considering repair,get an estimate for a compression test and a piston replacement,at the least.There is quite a bit of labor cost for internal engine repair.If they say come in and we'll look at it and want you to sign something,call elsewhere because someone will at least give you a free opinion or other alternative solutions.Once you sign the form at the shop,it authorizes them to work on your car but if you ask them to call you before work and you say no,I am not sure if you would be responsible for paying them to take the valve covers off and on to look and inspect them.The pistons are under them too so you could easily rack up more labor.

Posted on Sep 28, 2010

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