Question about 1989 Jeep Cherokee
Changed thermostat twice, and checked if theres any clogs in hoses. Still have no clue as to why its still over heating. Help!
Providing that you do not have a head gasket problem (usually identified by either coolant in engine oil or excessive white smoke sometimes accompanied by actual water from tail pipe, I've found that the radiators in these puppies are way undersized. Added to that, Beginning in the 70's, the manufacturers began to "lighten" cast iron engine blocks by eliminating some of the zinc from the alloy mixture. Zinc is also a binding agent as well as protection against rust.Rust gets into the radiator passages and plugs them up. During a normal flush, (in car) the rust is too heavy to come out of the tanks. Therefore if you remove the radiator and back-flush it, hold it first with one tank down, then with the other tank down, permitting the flush water to escape through the hose connection at whichever tank is down, then filling the radiator with clr household calcium rust and lime remover while standing upright with lower hose connection plugged for about an hour, then re-flushing as above, 90% of the time it will restore function.
Note:before replacing radiator take therm out, run strong flow of hose water through engine to remove as much junk as you can from internals.
Posted on Dec 24, 2008
Have the cooling system flushed and radiator roded out.
Posted on Dec 14, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 01, 2014 | 1997 Jeep Grand Cherokee
Dec 17, 2013 | Mitsubishi Galant Cars & Trucks
Jun 06, 2010 | 1997 Jeep Grand Cherokee
Jun 01, 2009 | 1989 Jeep Cherokee
May 09, 2009 | 1989 Jeep Cherokee
Dec 10, 2008 | 1989 Jeep Cherokee
Jul 23, 2008 | 1989 Jeep Cherokee
Jun 11, 2014 | 1989 Jeep Cherokee
206 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: