Questions & Answers for: Volkswagen when a thermostat is bad

...bad thermostat. I would also check: 1) water pump, some of the vw pumps are poorly made & tend to go bad. 2) fans belts, it can be tricky to get the right tension on these belts due to a badly ...

...thermostat Bad thermostat? Your thermostat is likely not opening, so the water cannot flow through its cooling circuit. Replace it IMMEDIATELY with an OEM thermostat; the aftermarket ones are ...

thermostat in this vehicle or is the radiator bad I would be surprised if the radiator is bad on a 2006 model. The most likely cause of this is your thermostat is stuck in the closed position. It will

...guessing its not opening all the way.... water pump could be bad What is your DTC code? This would provide some indication on whether it is a bad sensor, thermostat, or bad water

...if you get a spark, switch the wires. If the fan comes on, then the coolant sensor is bad.If it doesn't come on, the fan is bad. Could also be a clogged radiator, but do the thermostat

bad thermostat and needs to be changed. And can you harm the engine driving with a open thermostat. Please Back to me asap. Sean. If you are not getting a signal to your gauge, your car can still run.

...system fault code. It could be the thermostat, or the coolant temp sensor. Either the thermostat is stuck or the coolant temp sensor is bad. The coolant temp sensors have a reputation for going

bad thermostat; but I understand if the thermostat is bad a warning light would be lit on the dash. Is that the case? No, this is not your case. If the thermostat is bad any warning light would be lit

...thermostat is bad, His to take the thermostat And put it in a pan of boiling water. If it opens fully You know it is a good thermostat. If it does not open, you know it is bad. Return it to the place ...

...the temp light comes on when it is cold is the sensor bad It sounds like the thermostat is bad. The thermostat is mechanical, it's not activated by an external sensor and likely needs to be