Question about 1989 Ford F 150

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Temp guage starts to warm up but when I run the heat the guage bottoms out no matter how many miles i drive

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So you want more heat in extreme cold? block part of the radiator off with a cardbpoard sheet..not more than half of it.. old truckers trick.. some school busses use a snap-on grille stops the very cold air from cooling the radiator too much and not warming the motor enough to be of any good..

Posted on Dec 26, 2013

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Posted on Jan 02, 2017

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SOURCE: ford mondeo mk3, intermitent dumping of water from

You may have an air pocket in your system which some times happens.  One way to get rid of it is to take the upper hose off on the engine side,  fill your system with water until it runs out from your engine block, replace the hose, start your car turn you heater on and set to hi keep the radiator cap loose until the temp start to rise then close tight.  Once the air pocket had been remover you can drain some of the water from the radiator using the lower drain plug and add antifreeze.   

Posted on Mar 09, 2009

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SOURCE: My heater in my car

These taurus' have a notorious problem with the blend door actuator(controls hot and cold air mixture) failing.This is located in the cab of the car underneath the dash right in the center.This is not a diy project unless you have fairly extensive mechanical background.What you can check with ease though is to make sure that your coolant is full, this can cause a no heat condition.Also get your car up to normal operating temp and place your hands on the inlet and outlet if the heater core hoses, on the engine side of the firewall, and make sure both hoses are hot, if they are both hot then it is a blend door issue, if not then you have a restricted heater core, you can back flush your heater core by removing the hoses and placing a garden hose to either side and flushing it thru. I hope i could help....rate me accordingly.Thanks!!!

Posted on Oct 08, 2010

  • 547 Answers

SOURCE: 2001 ford escort zx2 has

It is much more likely you are low on coolant or you have an air bubble trapped in the cooling system. You should bleed the cooling system to get any trapped air out and make sure it is full of coolant.

Posted on Feb 13, 2011

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heater core air pocket, or the valve are the first places to look.see if valve is opening & you have a good 50/50 mix of coolant

Dec 25, 2013 | 1989 Ford F 150

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I have a '99 acura 2.3 cl, the engine runs hot but it does not over heat. taken to several mechanics and they cannot figure it out. the dashboard instrument shows it's getting ready to over heat but it...

First of all you need to verify with an actual thermometer.
For example, the sensor to the gauge may be off.

The way to check the thermostat is to feel both hoses on a cold engine, then feel one slowly get warm as the other stay cold until it reaches proper temp, and it immediately get hot when the thermostat opens. But a thermostat is cheap, so do it anyway.

While you are at it, you might as well splice one of those garden hose adapters into the heater hose, and back flush any sediment out of the system.
Make sure you replace with antifreeze and don't leave pure water in over night.

Then check the fan system.
The sensor that turns the fan on is in the radiator, and should turn on the fan relay at 190 degrees or so.
The actual fan should not matter if it works at all.

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97 Subaru Legacy, 142,000 miles. Temp Guage

Sounds like the Coolant is not full and has a air bubble. It is very important to have the system filled complete. That would be the first step.Good luck and have a great day.

Feb 22, 2010 | 1997 Subaru Legacy

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My heater will not get warm

Check your collant level If your radiator is full then you can place carboard in from and over the lower third of the radiator to block the air flow. Watch your temp guage to be sure you don't over heat the engine. If it still does not heat up pproperly you can block more of the air flow as l;ong as the neging temp guage is not showing it running hot. If it runs too hot remove some of the carboard allowing more air flow. THe proimary reasom for the heater not putting out warm air is low coolant, blocked water flow to the heater core or a bad thgermostadt (wrong thermostadt; one that opens at too low of a temp, defective thermostadt trhat is blocked open or even a missing thermostadt. Regardles what you do just be sure to watch the temp guage as you can do serious damage to your engine if you overheat it too much. Again, be sure you have the radiator topped off properly before you start

Feb 10, 2010 | 2001 Ford Taurus

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Engine running to cool

Replace the thermostat. If thermo is stuck open, coolant only heats up when there is no flow over radiator(idle) and then cools down when driving. Also, check coolant level, same response as stuck thermo.

Feb 06, 2009 | 1999 Volvo V70

1 Answer

Intermitant temperature

Check to make sure your thermostat works right by monitoring the warming up of your engine. With a completely cold engine, start and run the engine for a few minutes, then put your hand on the top radiator hose to monitor if and when it gets warm as the thermostat opens more and more and note the gauge reading( if it works) the top radiator hose should be unbearably hot within 5-8 minutes. If the therm. opens right it should close right aswell, staying open a little while eventhough the radiator may have cooled may be what you are experiencing causing the rapid cooling and is nothing to worry about. The Hose should not get warm very soon after starting the engine. Regarding you gauge, lets take one step at a time, verify proper op. or the therm.

Jan 20, 2009 | 1986 Toyota 4Runner

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Temp guage barely moves and runs rough just off idle

Try a full tune up.. get Bosch platnium+4 spark plugs and Acel wires, do the fuel filter and air filter(i suggest K&N) buy some fuel injector cleaner or use Marvel Mystery oil. The ECU could e gone but hard to diagnose if the car needs a tune up.

Jan 18, 2009 | 1992 GMC Sonoma

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