1991 Plymouth Sundance Logo
Anonymous Posted on Mar 09, 2013

I changed the thermostat in my 91 plymouth sundance and my car is still overheating and the reserve tank is spitting out coolant

I think my head gasket might be blown but I need to know why its still overheating and why my radiator reserve tank is spitting out the coolant instead of going into my engine and cooling it off.

  • Anonymous Mar 09, 2013

    thanks everyone... about a month ago there was a leak in my radiator in my car overheated....i was just adding water and coolant to it at first so i could still drive it.. i think it got to hot one day and now the problems start adding up.. I changed the radiator and hoses and my car afterwords was still going thru coolant... so today i changed the thermostat and every since i did so my car is overheating way faster and the coolant is just filling up my reserve tank until is spits out... do i ignore that the car is overheating and keep driving or what can i do to get the coolant into the engine instead of all over my engine

  • Anonymous Mar 09, 2013

    Is the thermostat in the correct way

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  • Posted on Mar 09, 2013
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Have a radiator repair shop or mechanic test for exhaust gases in the cooling system. They will have a tool using a color changing liquid to confirm your cracked head or gasket diagnosis. Also double check your thermostat install, if it's upside down it can create the same symptoms. If in doubt, just removing the hose and looking in should be enough.

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  • Plymouth Master 53,816 Answers
  • Posted on Mar 09, 2013
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To check for head gasket have a radiator pressure test done. The hot water is coming out the resevoir because it has no where else to go. Have the radiator checked for blockage as if the water is not circulating it will boil the same as a faulty thermostat

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Anonymous

You change the head gasket

The spitting is cylinder pressure or combustion
gases blowing out coolant

5 Related Answers

Anonymous

  • 405 Answers
  • Posted on Jun 30, 2008

SOURCE: how do you change a head gasket on a 97 plymouth breeze with a 2.0 litre engine ?

Follow this link for a step by step with pictures:

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800896af

Just an FYI head gaskets require alot of time and care to replace.

Good Luck Hope this helps

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Anonymous

  • 3533 Answers
  • Posted on Jan 25, 2009

SOURCE: Fusebox location

fuse boxes are usually under the dash on the driverside up by the brake pedal and another one under the hood driverside if the fuses are good it may just be you have to replace the fan because there is a relay in the fan that may have went out and check out a salvage yard for a good used one

Anonymous

  • 335 Answers
  • Posted on Apr 28, 2009

SOURCE: Head Gasket Issues on 91' Sundance

Need to know engine size. If it is a 2.2 or 2.5 you should not have any trouble finding good used parts if needed. You may find a complete engine in good condition for 2-3 hundred. Call your local wrecker and see what may be available. It might surprise you. Good luck.Moe

Anonymous

  • 1392 Answers
  • Posted on Aug 25, 2009

SOURCE: 1992 plymouth voyager keeps overheating

Sometimes the pipe that runs under the intake will leak. Can you smell antifreeze burning while you are driving? Another way to tell, is to let the vehicle run with the cap off. IF you get alot of bubbles out of the radiator, you have a cracked head, or a bad head gasket which is also a fairly common problem. It will push the antifreeze out of the radiator, and cause it to overheat.

Anonymous

  • 880 Answers
  • Posted on Jan 03, 2010

SOURCE: heater blows cold air 1995 plymouth voyager

With the engine cold & the radiator full remove the radiator cap and start the engine. Let the engine reach operating temperature which will open the thermostat. When it opens the water in the radiator will start circulating if the pump & thermostat are operating properly. If all is ok replace the cap and turn the temperature lever on the heater to hot If you still have no heat check the heater valve on the engine firewall. Open it manually and see if you have heat. If yes check the cable from the velve to the temperature lever.

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Related Questions:

0helpful
2answers

Overheating problem

overheating sound like faulty thermostat.thermostat either sticking close or could have blown headgasket if you see a lot of white smoke coming out of exhaust.if headgasket is leaking check engine oil should look milky.also check water pump look around weep hole or see coolant leaking around water pump replace water pump.also check water pump drive belt.make sure drive belt not loose slipping.
5helpful
2answers

Overheating coolant boiling out into reserve tank

you have a blown head gasket.. doesn't have to have coolant in the oil for a blown head gasket... if hoses are rock hard when running then you have exhaust leaking into the coolant via a blown head gasket...
0helpful
1answer

Overheating changed thermostat but no change

Warm up the car and pay attention to the coolant reserve tank.
If you see bubbles raising up from the bottom of the reserve tank then you has exhaust leak at the head gasket,
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The shop method is a coolant system pressure test and hydrocarbon dye test.
1helpful
3answers

Keeps overheating

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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Please post more information by clicking the comment link on the top right corner.

DON'T FORGET to RATE ME if my tip is helpful to you!

1helpful
2answers

Overheating

did you check the level of the anti-freeze... u might want to replace the thermostat and gasket and check for leaks
0helpful
2answers

Constantly overheating...

head gasket gone at piston port common enough problem with the bmw hope this helps?
0helpful
1answer

Overflow always fills,,,,radiator 1/2 full,,,when driven,,,gauge

My girlfriend has a 91 sundance. I solved that prob by doing a coolant flush and replacing the radiator cap. The gasket was torn to shreds on the cap
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