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My 2008 avenger was overheating i replaced the thermostat and it was fine for a few months then it started overheating again. When i turn my heat on it goes back to normal then takes awhile to overheat again

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  • Cars & Trucks Master
  • 2,210 Answers

Rads blocking up. When you use the heater its acting like a second rad and sucking some of the heat away. There is no ready way to clean it other than replacement. When you refill make sure there is at least 25% antifreeze. If you have been running without that's why the rad's blocked.

Posted on Nov 19, 2014

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  • Contributor
  • 44 Answers

Is it full of coolant in the radiator and the overflow jug? Does the cooling fan work?

Posted on Nov 19, 2014

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  • Cars & Trucks Master
  • 950 Answers

Please do the following:
- Re-check the thermostat.
- Check if there is any external coolant leakage around the radiator or the engine area.
- Check radiator cap. Replace if found defective.
- Check radiator fan for proper operation.
- Blow compressed air through the radiator fins from inside out and vice versa.
- Re-torque the cylinder head bolts.
- Check for transmission/ clutch plate slippage.
- Check for jammed disc brake calipers.
Hope that works. Thank you for visiting Fixya.

Posted on Nov 19, 2014

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: 2004 Jeep wrangler 4.0 - 6cyl overheating

I had the same overheating problem in my jeep ! My problem was finaly found out to be the clutch in my fan its a different kind of clutch system it work as this. When your jeep gets warmer the tighter your fan clutch gets .While cool your fan moves slowly. now to test your clutch just warm up your jeep and rev it up a bit if your fan dose not pick up speed then it is sliping.What will come out of this is that you fan will the seez and run full all the time. if you jeep dose not overheat wile moving then it is not your thermo stat period.

Posted on Oct 14, 2008

  • 120 Answers

SOURCE: 2003 VW Golf Overheats

the cylinder head has warped. replacement is the solution.

Posted on Dec 29, 2008

USfalcon
  • 175 Answers

SOURCE: 2001 GRAND AM KEEPS OVERHEATING

i believe the heater core broke or got crak chech the thermostat again

Posted on Apr 07, 2009

  • 632 Answers

SOURCE: 2002 Lincoln LS, V6 overheats

Did you purge the air out of the syst.? Also you replaced the fan but are they coming on? have you checked the fuses and relays? if all this is ok then is the computer comanding it on? Is the computer getting correct info from Eng coolant temp. snsr (ECT)

Posted on Aug 02, 2009

  • 117 Answers

SOURCE: 2002 Lincoln LS overheating

The cooling fan on the LS-V8 is hydraulic yes. But it also has a pressure switch on the pump that drives the fan. It is controlled by the temperature sensor. All these things must be taken into account. But the whining sound my lead me to believe that the pump is either low on fluid or is wearing out. The fluid the fan pump uses is the same as the power steering pump container so check it first. The same thing happened to my wife's Lincoln. I replaced the fan as well because everybody told me to do that but it didn't work. I found out that the fan is just a hydraulic motor in reverse it only spins as fast as the pump makes it spin and that is controlled by the temp. sensors. When the engine get's hotter the pressure goes up and the fan spins faster. This adds more power to the engine when it's running cooler because the fan doesn't have to spin at max speed. So good luck. I hope this has solved your problem.

Posted on Dec 12, 2009

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