Question about Jeep Cherokee
You did not list what year or engine BUT: Overheating can be the product of either poor coolant flow through the radiator (either restricted air flow from leaves bugs etc. or internally blocked coolant passages.) Or, and air-lock in the system from not properly re-filling after service (generally overcome by filling as the engine warms up with the heater turned on high heat).
If the engine overheated substantially before the repair was made, you may now have a blown cylinder head gasket, or, a cracked cylinder head. Evidence of this usually is exhaust in the cooling system (testable with proper equipment), Water or steam coming out of the tail pipe when running that continues after warm-up, or, coolant in the engine oil. (when in doubt drain, and watch for coolant, which will come out first as oil will float on it.)
Water pumps generally still work even when the seals or bearings are gone, providing the system is full. Cap will usually cause a delayed overheat as coolant escapes under pressure over a period of days. (all other leaks can do that as well)
Replacing the thermostat is always a good thing to do providing you put it in correctly (properly positioned in bore and spring end towards the inside of the engine)
Additionally, your cooling fans must be working. Electric fan should come on, especially when the engine is overheating. Mechanical fan should lock up and not freewheel again, especially when in overheat.
Aside from system testing, you always need to maintain a 50/50 mix of water/antifreeze. That raises the boil temperature of the system above the 212(f) of plain water....Too much coolant will lower it though.
Any questions about anything you find and don't understand? ASK.
Posted on Oct 11, 2010
a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jun 25, 2012 | 1995 Chrysler Cirrus
Oct 05, 2011 | 2003 Chrysler Voyager
Apr 19, 2011 | 1999 Oldsmobile Alero
Jan 28, 2011 | 1999 Oldsmobile Aurora
Jan 20, 2011 | 2002 Audi A4
Nov 01, 2010 | 1993 Eagle Talon
Jun 09, 2010 | 1996 Toyota Celica
May 24, 2010 | 2001 Isuzu Rodeo
Mar 03, 2009 | 2002 Jeep Wrangler
Jun 18, 2008 | 1990 Honda Civic
101 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: