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Vectra running hot

Temp gauge works sometimes and others it doesnt,not losing water,using a bit of oil.always hot and only hot air coming out of vents,not heard fan come on for ages..........?????

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  • chris faill May 08, 2013

    thanks walter,the main problem is that the car feels hot all the time[inside],you put the cold air blower on and still get hot air,ive not heard the fan come on for ages even though the engine feels hot,any idea?????

  • walter du plessis May 08, 2013

    the fan is controlled by the temprature control switch and if the thermostat is stuck or faulty the fan will not actvate

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  • Expert
  • 67 Answers

IT SOUNDS LIKE THE THERMOSTAT IS NOT OPERATING EFFECIENTLY IT COULD BE CLOGGED AND STUCK COMMON AND CAN OCCUR OPEN UP AND REMOVE THE THERMOSTAT YOU CAN RIDE WITHOUT IT IF IT IMPROVES YOUR PROBLEM SHOULD BE SOLVED BY REPLACING IT IF I UNDERSTAND YOUR PROBLEM IS THAT OF RUNNING HOT ON ENGINE AND NOT THE INTERRIOR HEATING SYSTEM.

Posted on May 08, 2013

  • walter du plessis May 08, 2013

    NOTHING FURTHER

  • walter du plessis May 08, 2013

    Could be faulty control switch if it sometimes works

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Replace the temp control on this car, it should be electrical control not cables.

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check the coolant temp sensor

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SOURCE: HOT AIR ALWAYS

this problem is almost always caused by the air temperature control blend door being warped and stuck or by the electric actuator that moves it, the common issue is the blend door actuator. To replace or repair this part requires the removal of the entire dash assembly.

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SOURCE: GMC Sonoma SLE 4.3L 1991- Coolant Temp Gauge Not reading

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SOURCE: air conditioner works sometimes, sometimes does

chech your relays and fuses for the ac cooling system on the fuse box, then check ac compressor

Posted on Jul 28, 2009

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Hot water runs through the heater core regardless of whether or not your thermostat is open or closed. That's why your heater works in the winter even before the engine is at normal operating temperature. The fact that the heater stops working is a good sign that the thermostat is probably not the culprit.

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