My 1995 cherokee 4.0, auto trans. has had a history of going about 125 miles and overheating. no visible leaks detected. no oil in water. no smoke or steam. has now developed loud 'clicking' noise when running cold or hot. i'm bewildered. please help me. thanks. jim
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert who has written 50 answers of more than 400 characters.
An expert whose answer got voted for 20 times.
Re: overheating and now engine 'clicking noises.
If you have a loud noise and you are overheating could be the water pump. Also, make sure to check the PH. You can get a PH tester at Walmart $4. When the vehicle is running look at the water pump pulley if it is wobbling the bearing went out (replace the water pump). Other symptoms are small coolant leak and excessive belt wear or damage.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Four things can give you a knocking noise. 1. failed rod bearing 2.failed main bearing 3. Bad piston wristpin 4. broken flex plate (auto trans) If It's a bearing, likely you are seeing lower than normal oil pressure. Any bearing repair requires the pan to be dropped but to do the job correctly requires engine removal, crank re-grinding or replacement and oiling system cleanout (expensive). Wristpin (piston/rod assembly) can be serviced without engine removal but pan and cylinder head need to be removed. Flex plate is pretty much a trans remove and replace, with new wheel. Only a good experienced tech can differentiate between the noises so I suggest you seek aid in your diagnosis, though, if either bearing or piston is the problem I'd likely find another engine before considering the repair.
Depends on the condition of the truck. A trans job if you can find someone who knows what they are doing is at least 1500. If your engine is good, and there is not any other major problems you might want to ask yourself what could you buy for 1500 that would not need some major on their own?
Only you can really judge the overall condition. One thing about jeep engines they go forever if you take care of them, but you were very lucky to get that kind of mileage from the trans to begin with.
it sounds like your automatic transmission quit his job. How much miles are on the clock? If more than 150.000 and you pulled trailers, climb mountains etc. this will be the first choice. Let the engine idle, push the brakes and check if the car will go in any gear. If this will happen only in reverse gear, your auto trans need to be replaces. You can use a rebuilt auto trans.
The on the fly 4WD in the Cherokee is engaged inside the front axle. If for some reason it doesn't fully engage, it produces a clicking sound until it either fully engages or disengages.
If that clicking you are hearing gets more rapid as you increase speed, slows down when you do, then that's what it is.
A vacuum leak is the likely problem, easy to fix, difficult to find. I have a Cherokee. I had the same problem. Start checking vacuum lines that lead under the engine to an actuator attached to the front axle.
Grinding noises are never a good thing. You didn't say if stick or automatic but I believe your'e talking about an auto. Grinding always indicates some degree of "hard part" damage which requires trans overhaul. I'd ignore service intervals and change trans fluid and filter at least every 30k. You have done well at 206k but perhaps could have streched it a bit further. Always follow severe service intervals (the manufacturers definition of severe is just about anything other than being parked in the garage) If well maintained, you are the best judge of your vehicles condition and expected lifespan. Consider any previous repair work and ongoing problems (if any) when making decisions. If you have a 4.0 engine I've seen many of these go well over 300K. !!! Good luck with it.
check your trans fluid level, if its too much, replace your radiator and make a thorough flushings on your trans. apparently having your trans fluid contaminated will soon break your trans. check your oil level, if its too much you will need to replace your cylinder head.
sounds like the transmission is in "limp"mode it allows you to drive even though there is a problem with the transmission,the code 21 is probably a transmission manufature control code and not engine go to autozone and they can scan it for free,if you just had transmission fluid changed recently if you used anything other than what the manufature calls for like atf+4 then this is your problem,flush the system and do a fluid and filter change with correct fluid as by what the owners manual,or dealer calls for,don't rely on autozone to get it right.