Question about 1989 Ford F 150

1 Answer

Temperature gauge Temp guage goes up some and as soon as I turn on the heater it bottoms out and stays on cold no matter if I drive 30 miles? Any suggestions?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.

    Cheetah:

    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 67 Answers

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

Posted on Dec 25, 2013

  •  Keith
    Keith Dec 25, 2013

    try to check or replace your temp sensor too. they are pretty cheap.

  • Gary Kemp
    Gary Kemp Dec 25, 2013

    where is the sensor located? is it the plug on the thermostat housing?

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 1144 Answers

SOURCE: Fluctuating Temp gauge - '96 Ford Explorer 4.0

Have the system pressure checked. This is simple and quick. Puts the system under pressure and helps to locate leaks. Check cap too. System needs to maintain pressure.

Some engines have a "Bleed" valve in the head so you can force the air out of the system as you fill it with coolant. May want to chekc to see if yours has one.

\Fluxing gage indicates coolant sometime there and sometimes not. Low level. Sound says the same thing.

Good Luck

Posted on Feb 16, 2009

  • 5 Answers

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

localwonder
  • 6784 Answers

SOURCE: temperature gauge not working,stay cold

Hi. the vdc at the sensor seems to be fine. if the ground is sufficient, i would replace the gauge. its malfunctioning. Check for loose connection at gauge before replacing the gauge.

Posted on May 14, 2009

emissionwiz
  • 76164 Answers

SOURCE: replaced thermostat,heater core and still no heat

the dommed part of the T-stat goes up, it won't go in backwards as memory serves me, what u almost certainly have going on here is the Air temperature control electric bend door actuator s defective, and the door is stuck in the cold air position in the heating/ac duct, to replace this the dash must be removed from the car..

Posted on Nov 14, 2009

OneRide
  • 379 Answers

SOURCE: heater not working temp gauge goes from normal to

LabRat was right on the money! Here is the fix. I have seen this happen numerous times in Fords. The engineers, in their infinite wisdom, placed the heater core HIGHER than the engine block. The coolant gets low and ya get an air pocket in the core. The fix...drain cooling system, remove t-stat and drill a SMALL hole in the flat part, reinstall it with hole straight up (It's an air bleed, if ya didn't figure that out), refill the system NOT THE REGULAR WAY!!!! Remove the hose that runs from the engine to the heater core. Use a funnel and SLOWLY pour coolant in, until the reservoir is full. This will eliminate the air lock in the core.

Posted on Dec 03, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Toyota Corolla 1987 heater not working when I turn on heater fan on it's warm for about 30 sec then goes cold and the guage goes to cold and stays there


Most of the times the heater core gets clogged or corroded. inside the fire wall and the hoses run through the engine compartment and into the firewall. You can try disconnecting the top and bottom hoses and using a garden hose to flush out debris. Flush through top hole first then bottom cycle back and forth to break everything up and water comes out clear. Then hook the hoses back up. Also make sure that your radiator l with coolant at the proper level. The heat typically coming out warm then blowing cold is low coolant or clogged heater core but the gauge on the dash should only symbolize engine temp. If it stays on cold, you may also want to check your thermostat to ensure it functions and opens and closes as it should. All cheap fixes that can be done yourself.

Sep 05, 2016 | 1987 Toyota Corolla

1 Answer

Heater blows cold air and the temperature guage reads cold after driving for 20 minutes


Best case scenario is your thermostat is stuck open. When this happens the engine will take a long time to warm up and will never get up to full temp. Worst case could be a serious problem such as a blown head gasket. If there is no coolent in the engine the temp gauge will not register either.

Dec 15, 2013 | 1999 Ford Explorer

1 Answer

My temperature guage stays in the middle, is this ok?


Yes, the temperature gauge should normally stop in the middle, between the cold and hot points on the gauge. When the engine is cold the thermostat will be closed and will keep recirculating the coolant in the engine block until it warms up sufficiently. Then the temperature of the warm coolant will cause the thermostat to open the channel to the radiator to get rid of excess heat, which should stop the coolant from over heating. So the effect of the thermostat keeps the coolant at a fairly stable temperature. When the coolant runs low, it can't transfer enough heat to the radiator and the coolant and engine then over heats. Watch for radiator leaks under your car after you have been driving it. If the coolant goes low again fairly quickly you could have a leak in a hose or the radiator itself.

Apr 19, 2013 | 2003 Mazda Protege

1 Answer

2006 f150- temperature gauge stays cold but "check gauges" flashes in mini message center.


Since the temp gauge is not working correctly, you get the warning message.
Could be a faulty temp sensor or a problem in the wiring harness.

Apr 08, 2013 | 2006 Ford F-150

2 Answers

Temperature needle stays on the hot and doesnt move even when the car is cold?


YOur guage is faulty. Your will need to replace your guage if it stays in the hot position even when your car is off and your key is out of the ignition. If it only rises to hot when you turn the key to the run position, you have a wire between your guage and your temp sending unit that has been gounded out. Usually this happens when a person opens their hood to add oil or perform some minor maintenance on the engine and inadvertantly bumps the sensor or switch or wiring. This causes about 65% of these minor issues people incur, but if it does stay all the way up with your key out of the ignition switch, then you will need to replace your temp guage.

Oct 18, 2012 | Ford Escort Cars & Trucks

1 Answer

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

1 Answer

Heat won't work when moving.


sounds like the thermostat has a problem and needs to be replaced. The thermostat regulates temp and it defective can either stay closed or stay open and I reckon in your case it has stuck open permanently.
Your manual should show you where the thermostat is located.

Jan 06, 2010 | 1998 Plymouth Breeze

1 Answer

Temperature Gauge Always On Cold


As long as your gauge is still moving up, there's no real problem. You have heat coming from the heater. It's only a problem if it's getting too hot. What's going on is that you don't let the vehicle run long enough, and it's so cold outside that the engine stays cold. It raises in temp when your stopped because there's no airflow through the radiator. The thermostat just heats up the engine block, and won't change the reading on the gauge. When this goes bad your car will overheat in just a few miles.

Mar 04, 2009 | 1998 Subaru Legacy

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

2 Answers

Temp gauge stay on cold.


Switch ig. on, ground the sender unit wire for about 3 seconds see if the temp. gauge moves, if so change sender unit, if not then it is a faulty gauge reader.

Jan 15, 2009 | 2001 Chevrolet Impala

Not finding what you are looking for?
Cars & Trucks Logo

39 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

fordexpert

Level 3 Expert

5522 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...