Question about 1998 Pontiac Bonneville

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Temperture gage doesn't raise above 125 used to be 200

Still getting heat always stand at 200 when after running it to worknow never goes over 125 could the tempastate be stuck or need new radorator cap

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The thermostat could be stuck open. Remove the cap when the the motor is cold. Start the engine and look in hole to see if the coolant is flowing if it is then replace the thermostat.

Posted on Mar 31, 2014

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I have a 1998 honda acord 4 cylnder non v teck with new raidiator and new water pump and it still runs hot overheats what should i do next to try to fix this


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May 06, 2011 | Honda Accord Cars & Trucks

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My 2002 buick century is loosing coolant fast. When car isn't running around 60-70 mph is seems to heat up more than normal and no heat or ac will occur. Should I replace the thermostat? I noticed the fan...


it sounds like one of several problems radiator needs flushed , water pump is bad or going, thermostat is bad, pin hole in one of the hoses, cracked head, hole in radiator, hole in heater core.if core is leaking you will notice water on the floor inside the car on pasenger side. if radiator has hole when you fill radiator with coolant it will leak froom fins sometimes only when hot. thermostat bad your car will read hot and or cold always. if stuck open cold, if stuck closed hot, after about 15 20 mins of running engine will cause radiator to boil over to over flow tank.never open radiator cap when engine is hot :) burn hazard.if pump is bad or going will notice gauge reads hot intermittent or always. will boil in to overflow tank. if head is cracked will notice water comming from side of engine block or in oil when you change oil. if radiator needs to be flushed will notice scale or gunk on radiator cap
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Mar 14, 2011 | 2002 Buick Century

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Hey i have a 1990 seville has no heat fan blows good changed theromstat and has good heater core but still will not blow hot air any ideas


Hello: You need to remove the passenger side glove box. Behind it you will see the HVAC programmer. On the top you will see a silver linkage that goes from the programmer to a linkage on top of the HVAC case. That linkage attaches to the air mix (temperture) door. withe car running and climate control on move the temp setting from 60 to 90, the linkage should move. If it doesn',t Reach in and with your fingers move the linkage, if it moves (toward the driver side) then that means you have a bad HVAC programmer. You used t be able to get a new actuator motor and repair the programmer but I don,t know if its available anymore or not. The actuator was a high failure item. Note: HVAC stands for "HEATER VENT AIR CONDITIONING" If you secure the linkage towards the driver side you should get heat but no automatic control or no way to reduce the amount of heat but you would have heat till you find the part.

Jan 11, 2011 | 1990 Cadillac SeVille

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I HAVE REPLACED NEW THERMASTAT AND NEW WATER PUMP, BUT STILL NO HEAT.WHAT ELSE CAN BE MY PROBLEM ? THIS IS A1995 FORD WINDSTAR VAN.


Maybe you didn't bleed all of the air out of your coolant systtem.
I had a very similar problem, last month, my heat would not go above 50 degrees F.

I had air in my heater core.

I put wheel blocks behind the back tires and engaged the emergancy brake.
I jacked the front of my van up so both tires were off the ground (about 3")
I removed the radiator cap, started the engine, and turned the heat on high.
I added antifreeze, until it was full.
I let the engine continue to run, as I watched the antifreeze level go back down, then I added more antifreeze.
After doing this 2 times, I squeezed and held the upper radiator hose. I did not release it.
I started pouring more antifreeze in and when it started to over-flow, I still kept pouring as slowly released the hose.
With the raditator level full, I replaced the cap and put some antifreeze in the coolant reservoir.
Lowered the front back to the ground and removed the tire blocks.
I stuck a guage in the inside vent and I now get a 125 degree reading.

Note...after I got the van jacked up, it only took me 15 minutes to get the air out of the system (mainly, because I squeezed and held the hose).

Nov 16, 2010 | 1995 Ford Windstar

2 Answers

What is the max temp before fan goes on


It varies from car to car. but around 220 degrees. Noting that all cars do not have an accurate temperture reading at the guage, per manufacturer

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