Question about 1999 Ford Taurus

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Transmission lines not cooling

If coolant temp sensor was replaced and unhooked battery to reset error code. Why am I still getting the low coolant light on.

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  • 54 Answers

Have you checked the coolant level in your radiator? GM puts a cooling unit in the bottom of the radiator, and that is connected to the tranny cooling system. Check for oil(tranny fluid) in your coolant of the radiator. Don't panic if you see it, just pull the radiator and have it fixed, or buy new radiator, then change all fluids in tranny and radiator.

Posted on Jul 22, 2013

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Posted on Jan 02, 2017

  • 1779 Answers

SOURCE: Transmission coolant line leaking on the transmission side.

Is the line before and after the connector steel? If you can cut the leaking section out w/ a hack saw, u can slip a section of gas line over the trans cooling line, and put a clamp on both ends, quick cheap fix that will last a long time.

Posted on Mar 19, 2009

  • 3 Answers

SOURCE: 96 fF-150 idling high

I CAN TOTALLY FIX THIS!!!! I just fixed this problem with mine! I have been fighting with it for 2 yrs. You need to replace you PCV valve if it is bad. And then clean out your IAC (ignition air control) take it off completely and spray the whole inside with with carb cleaner or brake cleaner scrape all the carbon build up out of it and work the spring in there untill it opens and closes easily! you gotta really work it though, once you have it all cleaned out put it all back together and it should work! When i did it it instantly fixed my truck!

Posted on Sep 28, 2009

  • 5481 Answers

SOURCE: I HAVE A 1998 FORD EXPLORE 4.0 SOHC CHECK ENGINE

When you replaced the part you needed to kill the old code by disconnecting the battery for 10 minutes.

The cold start problem could definitely be the result of the coolant temp switch not working. Check whether you are replacing the correct switch. The dash gauge should be a different temperature switch than the switch that runs the computer controls. It is possible that you are putting a new switch into the wrong hole.

The alternative is the wire going from the correct switch is bad to the computer plug in. Check for corroded terminals. The computer needs to know the engine is cold before it goes into the "Cold start" sequence.

Posted on Apr 06, 2010

  • 518 Answers

SOURCE: 1999 Ford Taurus Coolant Light

Jackie, Hi, yes this would be the problem if the temperature sensor is not working it will not tell the fan too start, so best advice would be too change this sensor, or have someone do it for you and that should cure your problem, Colin.

Posted on Jul 05, 2010

moparownr
  • 667 Answers

SOURCE: how to install a coolant temp sensor in a 1995 ford escort

The coolant temperature switch and fan control switch are located sie by side, mounted in the steel portion of the heater hose that runs from the thermostat housing to the firewall, it is underneath the air intake tube and the ignition coil pack, mounted to the back of the cylinder head. Either drain out some coolant or be very quick, and you can unplug and unscrew each switch from the hose and replace it with a new one. Make sure the engine is cold. After replacing make sure to check the coolant level add as neccessary. The single wire connector switch is for the guage, and the other is for fan control. Hope this helps, let me know.

Posted on Aug 06, 2010

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The "Generic OBD" of code P0128 is "Coolant Temperature Below Thermostat Regulating Temperature"

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2003 GMC Envoy - Idles rough when stopped (in gear), already changed engine mounts and cleaned throttle plate. There is a smell of anti-freeze coolant and the Check Engine Soon light comes on and the...


Engine temp too low is usually the thermostat, was this replaced too? If not, replace it. Might check out the fan clutch and the engine coolant temperature sensor.

As far as the vibration, have you taken a look at your tranny mounts? Usually vibrating in gear while stopped is the engine mounts, but I've seen the tranny mounts cause this too.

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1 Answer

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Troubleshooting it would depend if it has the Speed Density Update. The dealer should be able to provide that info.

Here's your fault code list:

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1 Answer

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