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1993 ford ranger runs cold,changed radiator,water pump,thermostat.Still runs cold.

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  • Frank Meert Apr 06, 2011

    Is the engine actually running cold, or are you just not getting any heat in the passenger compartment?

  • soma48 Apr 06, 2011

    Runs cold on cold days and get no heat.Warms to about the"O" of "NORMAL" when weather is hot and there is heat available.

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6 Suggested Answers

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Posted on Jan 02, 2017

chrischronic
  • 235 Answers

SOURCE: Replace thermostat in 2000 ford ranger

the open pipe that you took the hose off of is the thermostat housing, you will need to remove this to reveal the thermostat, make sure you use a new gasket with sealant when reinstalling thermostat housing to prevent leaks and dont over tighten the bolts,run both bolts down as far as you can before final tightning

Posted on Dec 26, 2008

  • 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

  • 2 Answers

SOURCE: HOW DO YOU PURGE OR RELEASE AIR ONCE YOU REPLACE RADIATOR, WATER PUMP AND THERMOSTAT?

Let the engine cooldown,then open the bleed screw on on the thermostat house,do not remove just loosen----fill water in the radiator bottle slowly and watch for water coming out of the bleed screw----
sometimes the bleed screw is blocked due to anti-freeze-then take the screw off completely ,clean and replace----always make sure the engine is cool

Posted on Jun 15, 2009

kel1guy2002
  • 3740 Answers

SOURCE: car overheating, blows cold air out vents, changed

A couple of things to check because as you describe your symptoms you actually have 2 problems

1. No heat from vents.

Sounds like the heater water flow valve cable is kinked disconnected or the valve itself is stuck You will need to follow your heater core water supply lines to find the valve usually to the right of the center console in the ducting area / large plastic housing for heater and AC internal coils. If the valve works then there is a possibility that the heater core water supply lines have been bypassed on the engine side of the firewall with a coupling due to a leaking heater core. And l;astly the heater core could just be clogged. (quite rare!!)

As for the overheating engine after all of the work you have done.. Perform this simple test.

1. remove radiator cap
2. have someone else start the car
3. watch for water coming out of the open radiator cap area DURING start...
4. have person in the car rev engine gently 2 or 3 times. No need to exceed 2000 RPM. If water rapidly flows out of the radiator during engine revs.. you have some major engine issues.
If it passes all of these checks then the only thing left is improper hose connections on the engine side of the firewall and or a hydraulic water lock in the block that should clear itself by starting and stopping the engine many times with the radiator cap off.



Posted on Jan 27, 2010

  • 3640 Answers

SOURCE: 2001 Chevy Malibu - have changed out thermostat

check to make sure fans are working for radiator. if not check coolant tempurature sensor, fuses, and relay. is all air out of coolant system!

Posted on Jul 07, 2010

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1 Answer

Does the 1993 nissan sentra need its thermostat


Running an engine without a thermostat will allow it to run too cold. This will cause oil problems and fuel efficiency problems. The computer will make adjustments for a cold engine which will affect idle speed, timing, and pollution controls. You may have a plugged radiator or a water pump not moving enough water or a bad thermostat. The cost of a thermostat is much less than the damage you will cause running without one. If the radiator is plugged. running without a thermostat will not solve the over heating condition.

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TEMP IS HOT


Check discoliration of oil and if present then blown head gaskit.
Thermostat ncould be stuck.
Blocked Radiator
Look for wet spots if car parked over night..could be leaking hose.

To check water pump remove thermostat ,seal and put thermostat cover back on and run engine with filler cap open.(make sure you fill water before running it)Water should circulat in the radiator,if not then faulty water pump

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You should check for a valve in the heater hoses, and if the vehicle is running cold - below the normal mark on gauge.

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My ford ranger keeps running hot. I can drive it and after about 30min. there is not water in the radiator.


Ok ~ Things to check are (simplest first)
1. Examine radiator cap for damaged or leaking seals. (Have it tested at your radiator place.
2. Check for water leaks. At the radiator, rubber hoses including heater hoses. Also cabin heater radiator core.
3. Top up radiator and run engine without the cap fitted. Blip the throttle and see if any bubles or traces of gas appear when you look in the top tank. During this test, check that the top tanks turns "hot" as the thermostat opens. If not, remove and test/replace thermostat.
4. Have a "cylinder leakage test" done at your repair shop.
5. Have the cooling system pressure tested.
6. Add coooling system ceaner to the system and drive for about 30mins. Next, reverse flush radiator and engine block.

This list is in the order you need to procede, and next step should be performed only after the the preceding step tested ok.

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1995 ford ranger with 4.0 auto, I have very little heat based on out side air temp, have replaced radiator, water pump and changed thermostat 6 times, the temp gauge will go to mid range and then drops to...


i am suspecting a flow issue like a clogged radiator or something to do with the impeller on the water pump was there alot of rust? If so that is the impeller and it is in your system real good make sure to flush it until clear water runs out

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I have the same engine. I think when I had this problem it was the water pump going. I think that when it gets hot, the engine goes into a frenzy. I had lent someone my car and that is what greeted me when I got it back. I know changing the water pump is more difficult, but mine was 20 years old before I replaced it! Not too bad.

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