Question about 2000 Honda Accord

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Temp gauge shows hot quickly

Just turned cold....turned on heater.....no heat......temp gauge shot up quickly. Thermostat stuck? Where is it located?

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EITHER THE THERMOSTAT OR U ARE REALLY LOW ON COOLANT.

Posted on Dec 11, 2008

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No heat 98 ford f150


verify heat is in normal range using dash gauge. if its normal then good. if it is below normal, you may have a sticking open thermostat not allowing heat to build up enough for "hot" heat. but usually luke warm heat will be this issue.

If everything is fine with gauge heat, check the hoses going to your heater core with your hands. they BOTH should be hot. If one is hot and another is warm then you have heater core issues. If both are HOT then you may want to check your temp controls. either temp control may not be working or the door that changes temp may be stuck in the cold position... there are many things, but checking the heater core hoses are most likely going to reveal bad heater core.

You will need wiring diagrams and volt meter to diagnose anything other than touching hoses and looking at gauge.

Oct 13, 2014 | 1998 Ford F150 Regular Cab

1 Answer

HEATING ISSUES


One way to tell a bad thermostat in a car is if the car overheats frequently even if there is water in the radiator.Stuck open - no heat from heater, temp gauge hardly moves off of cold.
Stuck closed - overheats engine, temp gauge quickly climbs to hot.listen for any rubbing, grinding, or whining noises from the pump. look under water pump while running, if pump is going bad. water will come out of weep hole on the bottom of the pump. good-day!

Apr 07, 2014 | 2005 Kia Sorento

1 Answer

I have a 98 Bonneville, the heater/defroster is blowing out cold air. I drove around for 30 to 40 minutes checked the radiator and it was cold to the touch. could it be the thermostat


The dash gauges are notoriously inaccurate. But it is possible that the thermostat is stuck open. Does the upper radiator hose get hot after engine warmed up? Also feel both heater hoses-when engine is warm, both should be hot-indicating the coolant is circulating through the heater core. If heater hoses are hot, and you still have cold air, the temperature blend door on the heater case may not be operating.
Try a new thermostat and see if engine warms up faster and better.

Dec 10, 2013 | 1998 Pontiac Bonneville

1 Answer

Temp gt hot blowing cold air would this be a thermostat or water pump


Maybe a thermostat..or the heatercore clogged up..If the vehicle runs hot pretty quick then its the thermostat stuck closed..If the vehicle is not running hot,but you have no heat then the thermostat will be stuck open or the heater core not circulating

Sep 04, 2011 | 2000 Buick Century

2 Answers

My truck starts running hot then I turn the heater on and it blows cold air but every once in a while the heater will throw out hot air. Then the temp gauge will go down. I've check med the radiator cap...


I'd still check the thermostat. Or basically just replace it. Have you ever drained all the antifreeze and flushed the system? Good time to do both. If the hose's get real hot that doesn't really mean the thermostat open. Wouldn't they get hot even if the thermostat didnt open.? If the thermostat was stuck open you'd would have cold air and low temp gauge. Then maybe hit a pump or something and have the thermostat stick closed and have high temp. Maybe water pump. Check it when you have the belt off. Spin, pull & push the water pump pulley around. I'd replaced my water pump at about 110,000 on a '97 dodge Dakota. My 97 never had a very good heater. Always heated up more after driving. Idle never got it warmed up.

Jan 14, 2011 | 1999 Dodge Dakota

2 Answers

2001 Jeep Cold RAdiator


Does your temp gauge read normal? if it does then the thremostat is ok,but sadly the water pump is going bad this is typical of jeeps at an idle the heater cools off because the water pump fins are worn enough to not circulate through the heater core and when you step on the gas the increased rpm move the water fast enough to circulate through the heater,it is possible that the heater core is plugged but I doubt it as a plugged heater core would not get hot either it would be cold or just luke warm all the time.

Dec 25, 2008 | 2001 Jeep Grand Cherokee

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