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Friends car(2001 pontiac grand prix) 3.8 v6.started running hot,so he replaced thermostat. didn't help. so replaced water pump. helped very little. heater hoses cold to touch and blows cold inside. worked fine before? heard something about air pockets. any truth to this?
Re: Friends car(2001 pontiac grand prix) 3.8 v6.started...
Yes, but it's designed to drive the air out as long as you open the cap and run it until it's hot, keeping the radiator full. Eventually the air will come out and heater hoses should get coolant.
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repairpal.com > Problems > Pontiac > Grand Prix Engine Stall Or No Start Condition on Pontiac Grand Prix. The fuel ... 2006 Pontiac Grand Prix- 3.1L V6102,000Visitor ... 2002 Pontiac Grand Prix- 3.8L V698,000Visitor.My ... V6 3.8L 2DR Coupe My car suddenly began having problems.
check your water pump if it go's out it will cause you car to over heat and blow out cool air. if not water pump check your thermostat ez way is your hose on the left side (driver side) hot or cold if hot thermostat probably fine. if cold replace it. and it never hearts to do an coolant flush. last but not lease those motors are notorious for bad intake gaskets.
need more help just let me know
stockam auto
Could be thermostat is not opining or water pump is failing. I would start by replacing thermostat if that doesn't help then Replace the heat sensor that tells u temp and when fans should kick on. If Ur still having problems I would replace the water pump. But I highly doubt that it's the water pump. It's either thermostat or sensor.
its either of the 3 ur water pump is weak and couldnt supply the right amount of coolant to ur engine / ur radiator is clogged or your thermostatic valve is stuck up that restrict full flow of fluid to the radiator thats why when u use the heater that uses ur coolant hot water as a heating unit the temp. goes down...
Start by flushing your coolant system, then refill with a quality coolant.
Run up to temperature and check again for level (when cool again)
Check that the radiator is getting really hot quite suddenly when running from cold, as this is the best way of checking thermostat operation.
When over a set temperature (check your manual) the fan should come on.
If it never does - troubleshoot the fan (temperature switch or sensor first, then fan on direct feed to see if it powers up ok)
dear friend-there is a couple of things you can do to find the problem,when the engine is cold remove the radiator cap start the engine then look inside to see if the water is circulating,all so look for bubbles in the water,if there is bubbles,you might have a blown head gasket,if there is circulation the water pump is ok,then get the engine up to working temp,then feel both the top and bottom radiator they should be the same temp,if not then the termostat is at fault
Make sure your cooling fans are coming on when the temp heats up. Are you talking about a leak inside the car or outside? Inside is usaully a drain tube for the A/C stopped up. Outside, look for a water pump or intake gasket.
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