Question about Cars & Trucks
You did not say what the make model and year is, so I will give a generic comment.
I would check compression to find out if you may have damaged the head gasket. A shop can do the test and also check the cooling system for other leaks. Problems with the timing chain would not cause the engine to run hot, and running hot would not cause damage to the timing chain unless something happened to the valves.
Posted on May 04, 2013
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Posted on Jan 02, 2017
try changing cooland temp sender,your heater matrix maybe blocked(common)what temp is it running at have you checked it with a gauge?
Posted on Dec 29, 2008
When the car is completely cool,check the electric fan(s) for smooth rotation.
Clean/check/change the thermo sensor,contact and wire.
Excavate air pocket in coolant system / check for head gasket leak
This test will kill two birds with one stone.
MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!
RAN THIS TEST IN A WELL VENTILATED AREA ONLY!
You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!
Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .
Top of the coolant reserve tank
Let it ran for 10-15 minutes.
Monitor for air pockets escaping from coolant reserve tank.
Small amount of bubbles is OK at 1-5 minute mark
After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.
If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.
Give the thermostat host few gentle taps.
If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.
Let engine cold down and top off coolant reserve tank.
Start monitor for coolant lost
A coolant flush is require every 2 years or 24,000 miles.
I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.
Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.
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Posted on Dec 05, 2009
SOURCE: My Grand Prix stared running
are you sure that the radiator is not clog ,also check the cap for broken gasket also check the hoses for stiffness i would also wanna run it without thermostat to see what happens ,some times they come defected from manufacturer good luck
Posted on Mar 30, 2011
Testimonial: "Thanks!! Will check out your suggestions."
Thanks for choosing FixYa and welcome. Do you have a check engine light on? If it was ran a lot during the overheating, there may be engine damage. You may have a bad head gasket.
Posted on May 10, 2011
Check to see if security light on dash is on after turning key to on/start position and letting dash lights run dianosis.(after 10 to 15 seconds). Pontiac uses a security theft system which shuts-down fuel injectors when a different key is used or the Body Control Module thinks the car is being stolen. Pontiac designed this so the owner would have to bring the vehicle back to the dealer. My Grand Am did this and it cost me alot, just to have the dealer reset it.( took them 5 min.) You may have to re-learn the pcm and bcm. It's the same as the dealer re-setting them. The proceedure is (1) turn the key to the on/start position and leave there for 12 minutes.
(2) turn the key to the off position for 30 seconds.
Repeat steps 3 times.
After that the car should start.
I know this is a hassle, but it's a lot cheaper than taking it to the dealer. Hope this helps.
Posted on Sep 15, 2011
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