Question about 2003 Jeep Grand Cherokee
You didn't include enough info to really help but most times overheating is caused by low coolant level from an external leak, a failed or failing thermostat, a bad radiator fan (electric or clutch type) or fan relay, coolant sensor etc. Any obstruction to air flow through the radiator or internal obstruction can also cause an overheat. Last but not least, either too much water or coolant can lower the boiling point. Make sure you have a 50/50 mix and a good pressure cap of the correct pound rating. (I think yours is rated at 16-19psi)
If you see white smoke from the tailpipe even after warm up, you may have a blown head gasket. In that case you'd need to take care of that but should also find the initial cause (any of the above).
When doing any testing be very careful...opening a system even when not in overheat can cause hot antifreeze to come out quickly and with force. (can make for very bad burns)
If you narrow down the problem a bit and need more specific info, just ask.
Posted on Jul 15, 2010
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:
Oct 24, 2013 | 2002 Ford Taurus
Sep 23, 2013 | 2006 Suzuki Grand Vitara
Oct 05, 2012 | 1997 Lincoln Continental
Mar 10, 2011 | 2000 Mercury Cougar
Apr 07, 2010 | 2005 Volkswagen Jetta
Mar 17, 2010 | 1997 Plymouth Neon
Feb 02, 2010 | 1999 Oldsmobile Cutlass
Dec 26, 2009 | 2005 Honda Element
Sep 10, 2009 | 2006 Fiat 124
88 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: