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1992 ford ranger with stock 3.0 v6 overheats at an idle but stays cool at highway speeds. What is causing it to overheat?

Posted by Anonymous on

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

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Posted on Jan 02, 2017

  • 10 Answers

SOURCE: Over-heating Ford Taurus!!!

Sounds like a stuck thermostat no heat water not circulating to heater core engine overheats stuck thermostat won't let water circulate through engine

Posted on Feb 16, 2009

  • 1 Answer

SOURCE: ford ranger truck overheating

I have had this happen with my ranger. Changed everything I could to try to fix the over heating. It turned out that I had a small leak in my head gasket and it was allowing exsaust gas to go into the cooling system witch was over pressurizing it. Also the air from the exsaust will heat up much faster than liquid making your thermostat to read hot and will not be able to blow hot air in the cab because there is no liquid going to the heater core. This happened to me when my blet came off and I tryed to make it home. If you had it over heat for a long peirod of time it may have ripped the head gasket.

Posted on Feb 21, 2009

  • 135 Answers

SOURCE: 91 toyota 4x4 22re overheats on highway, but not at idle.

original issue sounded like thermostat but now that you have lost power i would have to say thermostat, blown head gasket, and warped head

to check thermostat find and remove place in pot of boiling water the see if it opens, then to ice water to check if closes.


the only way i know to check headgasket and head is to check oil and water. oil will have water in it, and water iw have oil in it

Posted on May 04, 2009

rockitman187
  • 2559 Answers

SOURCE: MY 1997 FORD ESCORT OVERHEATS

The A/C has nothing to do with the car over heating,

For the over heating issue,you need to check an or replace if needed
The thermostat,cooling fan,and temp sensor.

For the A/C issue,Check refrigerant charge and recharge as needed.

Posted on Jun 01, 2009

Kravcar
  • 192 Answers

SOURCE: 98 deville 32 valve North Star OVERHEATS after 33

The most common overheating problem with the Northstar engine is a blocked purge line(small hose).The purge line is designed to purge air out of the cooling system.
There is a small diameter hose coming from near the top of the coolant tank (not the cap) ,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.
If the hose is clear, check for blockage at the nipple on the tank.Or trace the hose back until you find the blockage.
The hose goes in to the engine to a crossover and comes out the other side close to the thermostat housing,the blockage may be there.
Also note that the cooling fans don't come on until the coolant temperature hits around 225 degrees.
During normal highway driving the fans will very rarely come on(if at all) due to constant air flow through the radiator.They will only usually come on in heavy traffic conditions on a hot day.
But......if you have the Air Con switched on, the fans will run all of the time.

Posted on Jul 17, 2010

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1992 toyota 22re overheats after driving fine at highway speeds, starts to overheat when coming to a stop


It could be that your radiator is clogged up. The temperature in my truck went considerable down and has stay that way after I changed the radiator. See if cleaning it with pressure water helps.

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1 Answer

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Does the radiator fan come on before it overheats?
And is it boiling over, or just showing hot on the gauge ?
Is the cooling system full of coolant and no air pockets ?
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When does it overheat? At idle, or at highway speed? Is the coolant level where it should be? Overheating at idle or highway speed may be a faulty thermostat. If it overheats only at idle then it is likely a cooling fan fault. To determine if the fan is working start the engine and switch the A/C on, the fan should come on, if it does not, then you need to have the computer "scanned" to see if it can detect the reason for the fan not coming on. If the fan is switching on, then you need to have the water pump checked to see if in fact it is pumping coolant (this could also be the cause of overheating at highway speed) If you are overheating only at highway speed you may want to have the enigine checked for a blown head-gasket, or faulty radiator.

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1 Answer

Need to know where the fan motor and resistor is located on the 2003 Ford Focus. Car overheats while idling, driving, in park, and it'll still overheat when the heater is on. Tell me what site I can find...


Cars usually overheat when the thermostat is faulty, coolant level is low, or the water pump fails. If your cooling fan on the radiator does not kick on shortly after the engine reaches operating temperature, you may have a bad cooling fan, cooling fan relay, or cooling fan fuse. If your engine is overheating, start by checking the fluid level, and installing a new thermostat.

A blower motor resistor is the device that controls a car's cabin heating and air conditioning unit's fan speeds. This usually won't cause the engine to overheat, your A/C fan may not function or only function at one speed. Here is a Blower Motor Resistor from Autozone: http://www.autozone.com/autozone/parts/2003-Ford-Focus/A-C-Heater-Blower-Motor-Resistor/_/N-jk8uvZ91tag

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1 Answer

Does the hose on the fill tank need a clamp or not? why does vechile overheat if the fill tank on the side is full?


A clamp might not be needed, this is not under pressure. It would not hurt to have one, but a simple spring clamp is adequate.
A vehicle can overheat for many reasons. When does it overheat most? During periods of slow speed, stop-and-go, and idling? Or during long high-speed drives on the highway?

If it is mostly idle and slow speed, check your cooling fan. Mostly they are thermostatically controlled, only turning on when needed. If this does not work, check the fan relay, fan motor, and fan thermostat.

If it overheats mostly at high speed, it is most likely that the radiator is partially plugged and needs to be backflushed, rodded, or replaced.

If it always overheats quickly after startup (less than fifteen minutes) it may be that your thermostat is not opening properly.

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When driving down highway only, it overheats? When running steady, I take it you mean, sitting idling? If it's only overheating at highway speeds, and all else has been checked out & is o.k., I'd take a close look at rad hoses for soft spots (easy to squeeze) that may be causing hoses to collapse at highway speeds & restricting flow of cooling system. Another thing to try is, turn your heater on high fan & high temperature when it starts to heat up & see if temperature gauge goes down (cooler) at all. If it does, then rad not doing it's job properly.

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