Overheating 2007 PT CRUISER

Asked by Aug 13, 2017 at 09:25 PM about the 2007 Chrysler PT Cruiser

Question type: Maintenance & Repair

My 07 PT Cruiser keeps overheating. We have replaced
the thermostat, the water pump, timing belt andfanbrelay
switches. We are at a complete lose. PLEASE HELP

11 Answers


All air out of system? Are the fans working? Did you directly hook up fans to battery to see? Pressure test system to see if it holds pressure? Correct thermostat and did you install it correctly? Test coolant temperature sensor? Any engine codes? Test radiator cap to see if it holds pressure?

2 people found this helpful.

Thanks will try all you suggested


Have you checked it for a bad head gasket?

1 people found this helpful.

From what I understand these require the special DEX-COOL antifreeze if that wasn't used could be the head gaskets. Bars Leak has a cork looking thing that will seal for awhile.

2 people found this helpful.

the only thing special of that antifreeze is it is long life. using the "wrong" antifreeze wont cause head gasket to fail. stop leak is a temporary fix. A brand i recently used is Blue Devil. its about $40 for 16ounces. follow the directions exactly. to check for bad head gasket, remove radiator cap when it is cold. start engine and look for tiny bubbles. sometimes you can smell engine exhaust from radiator.

2 people found this helpful.

Dexcool orange antifreeze is needed to run the car smoothly, the car will go in safemode and start to die if you mix the green and orange. It also causes the car to overheat then eventually if you change the thermostat the car may run too cold and start to die at intersections. Try flushing the antifreeze out with water through the radiator then adding dexcool 50/50. That should solve the problem.

1 people found this helpful.

Yeah but u didnt replace the radiator.


All of these answers are fine and dandy. However, I've been working on cars since 1986. What I would like to know from the owner is what became of their '07 PT? Checking for a bad head gasket is easy (basically). The other repairs are moot, until a head gasket has been ruled out. I await an update from the owner, Sheri, please let us all know. :)

1 people found this helpful.

Maybe a cap on the engine same problem happened to me and we replaced the whole engine and that helped


I'll bet money that your problem is your ambient air temperature sensor circuit. And yes, I'm a woman and I know what I'm talking about lol! We do exist.

1 people found this helpful.

I have a 2006 PT cruiser- injured the radiator, and had it replaced, but the injury also bent the lower holding bracket, so the next radiator didn't last, next replacement the mechanic did some "creative" work, and made something to fit in the now non-standard space. No problem. 1 month of respite, and overheating / coolant loss started again. Pressure test for head gasket came up negative. Another mechanic looked all over, and found a small drip that he thought was from the heater core... replaced that... 2 days later- still overheating, most obviously on any hill, became an issue w/ not even something steep. Replaced head gasket (and they found the head warped, likely from some of those earlier episodes), and machined the head. Replaced the water pump and power steering belt at the same time (access / might-as-well while the labor is already done), this was at 141,000 miles, when it was 7 years old. So.. yeah.. look at the head gasket.

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