Question about 1999 Ford Ranger SuperCab

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My temp. sensor needs replace do i have to drain the coolant.

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You should at least drain part of the radiator, and make sure your truck is cool when you do this. If you break the old sensor free, and have the new one ready to screw back in to the opening, this can be done easy enough. Remember to put a little thread sealing compound on the new sensor before installing it.

Posted on Nov 18, 2009

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Not necesary what will be needed according to your mileage
hope this helps

Posted on Nov 18, 2009

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Have a 95 ford ranger 4 cyl need to know where coolant temp switch is located my gauge is inop i found coolant temp sensor for computor need one for the gauge

On the 4 cylinder motor (2.3L,2.5L), the coolant temp sensor can be located
on the left side rear of the engine, below the cylinder head.

A picture of a typical Coolant Temp Sensor (aka ECT) is below:

Be sure to partially drain coolant below the level of the sensor to avoid spillage when removing the old part. Best of luck on your repair!

Sep 28, 2011 | Cars & Trucks

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Hey John, I never finished was going back and forth with youl. I haven't had time to complete the work yet but I was able to get the Coolant Temp Sensor. I'm trying to install the new one but need to...

Many of the coolant temp sensors have a sealer on the threads. Some people do use a small amount of rtv sealant on the sensor but isn't necessary.You can drain the coolant but usually I do not as long as the coolant isn't hot.Typically put a catch pan under the area am working in and dispose of the antifreeze or reuse if your pan is clean.

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2000 bettle 1.9L turbo will only start if you unplug coolant temp sensor

Hello and welcome to FixYa!

If that's the case, I strongly suggest that you replace the coolant temp sensor. Looks like it's faulty and grounding the circuit. The car's computer can detect it that's why it won't start but once you disconnect it, it will for the coolant sensor is bypassed.

Hope this helps and thank you for using FixYa! Have a good one!

Apr 14, 2011 | 2000 Volkswagen Beetle

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When I turn the key, the temp gage goes to full hot. even when the engines off with the key in the run position

Either the sensor is faulty (not uncommon) or the wire to the sensor has been damaged and is earthing to the bodywork.

To check, disconnect the wire connector at the sensor. If the temp gauge stays high then there's a wiring fault. If not just change the sensor. You'll have to partially drain the coolant to do so so make sure you release the pressure cap first and catch the drained coolant in a clean container for re-use. If the coolant is any colour other than a definite blue or pink then discard the drained coolant and top up with fresh coolant mix. Turn the heater in the car to cold before draining dow: this keeps the coolant in the heater core and prevents air locks when you refill the system. Also, the new sensor should come with a new seal. If not then order a new seal when you order the sensor.

I hope that I've been of assistance and that you soon resolve your problem. Don't put it off, as a simple £5 sensor protects you from a potential four figure repair bill.

Sep 24, 2010 | 1993 Honda Accord

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Getting a PO125 code in my 98 Camry (4cyl), already replaced the Spark plug wires and fuel filter, any ideas?

P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
Replace your coolant temp sensor.Be sure to double check your coolant level and does the engine reach an operating temp(about halfway on the guage)in a normal time?! If it does, the temp sensor for the computer needs to be replaced.

Apr 16, 2010 | 1998 Toyota Camry

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On a 2004 volvo s-40 with turbo where is the thermostat located and the engine coolant temperature sensor thanks


Thermostat location in 5 cil. engines, temp sensor is located just right or upper arrow in picture. I've included a picture of temp sensor and installation instruccions.


Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

  1. Drain the engine coolant.
  2. Disconnect the ground cable of battery.
  3. Remove the electrical connector from the sensor.
  4. Remove the coolant temperature sensor.

    0900c152801c1206.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Coolant temperature sensor illustrated
    Coolant temperature sensor illustrated

To install:
  1. Apply sealant to sensor threads. Install the sensor and tighten to 15-29 ft. lbs. (20-39 Nm).
  2. Attach electrical connector to sensor.
  3. Connect the ground cable of battery.
  4. Refill the coolant.
If helpful, click below, good luck.

Apr 03, 2010 | 2004 Volvo S40

2 Answers

Will coolant leak out removing the engine coolant temp sensor

lol.......Always be prepared......Yes more then likely it will. Have a very large drain pan under the radiator.

Jul 31, 2009 | 2001 Hyundai Sonata

1 Answer

Temp Gauge Reads Hot all the time and i have heat

as soon as you turn it on after it has been shut off for how long? you could have a bad sensor. if you have a sohc (single overhead cam) engine you have a coolant temp sensor. if you have a dohc (double overhead cam) engine you have a cylinder head temp sensor. either way you will need to start with everything cooled off, drain the coolant, remove and replace the sensor. for the sohc engine you have to remove the ignition coil to get to the sensor, for the dohc you have to remove the alternator. in both engines you are supposed to torque the bolts that hold the sensor in place to 89 in-lbs, tight enough to not have a coolant leak at that point, and not so tight that you stretch the bolts or break them off in the block. if you still have a problem after you replace the sensor then you probably have a bad water pump. hope that helps.

May 26, 2009 | 2000 Ford Focus

1 Answer

Need to know the location of coolant temp sensor

it should be right by the upper radiator hose. it just unscrews. go to auto zone they can help..youll have to drain some coolant. or go to the library for help

Apr 09, 2009 | 1999 Dodge Caravan

1 Answer

Coolant temperature sensor on a saturn 2002 sl1. where is it loca

The coolant temp sensor is on the driver's side of the engine in the head. If you remove the lid to the airbox and lift the intake tube, you will be able to reach it easily. To remove the connector, you just squeeze it. Then use a socket or a wrench to remove the coolant temp sensor. You will lose some coolant so be ready with the new one or drain the antifreeze before you start.

Jan 07, 2009 | 1997 Saturn SL

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