Question about 1991 Lexus LS 400

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My lexus ls400 1991 the fan all time is on. - 1991 Lexus LS 400

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Your car have 3 fans, 1 front of engine that always work ,and 2 electric in front of radiator , only works when air cond is on and temp high

Posted on Jul 13, 2010

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Posted on Jan 02, 2017

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Cooling fan continunity check ???? One has continuty other does not ??????


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My 1998 lexus e300 is running hot and I noticed the cooling fans are both running but at low speed. what controls the fan speed


The PCM(computer) controls the fan speed. Low speed comes on around 200 degrees, high speed kicks on at around 225 degrees. If they come on when you first start the engine, the coolant sensor is bad. PCM is in default mode and runs the fans all the time. Since it doesn't read the 225 mark, it won't kick on the high speed. Turning on the A/C will also kick on the high speed fans. That's if your A/C works.

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I need diagram of fan belt for Lexus LS 400 1993 model.


go on youtube you will find your answer there

Feb 18, 2015 | 1993 Lexus Ls 400

1 Answer

Fan running all the time


Check fuse and holder not burnt out! Then fan control module FCM!

Jan 11, 2015 | 2005 Lexus Ls 430

1 Answer

The fans at front of lexus/92 LS 400 don't work


1992 ls400 engine light was on replaced thermostat now lights off......fans dont work anymore,last time it worked was about 3 weeks ago now having overheating probloms

Jun 10, 2012 | 1991 Lexus LS 400

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95 lexus es300 over heats when ac is turn on


Is your radiator cooling fan operating when the A/C is turned on? The cooling fan should be running at all times with the A/C on. If it does not, then your problem is being caused by a bad cooling fan motor, a bad cooling fan relay, a broken fan motor circuit, or broken fan control circuit.

Aug 27, 2011 | Lexus ES 300 Cars & Trucks

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My lexus ls400 1991 the two electri fan all time is on


Either the temperature sensor on the radiator, or the relay is bad.
Pull a wire off the temperature sensor on the radiator.
If it stops the fans, then the sensor is bad and the relay ok.

Jul 19, 2010 | 1991 Lexus LS 400

1 Answer

A 1992 lexus es300. the fan appears not to be blowing.


you need a FAN temp control switch or relay or run a toGGl switch

Feb 28, 2010 | 1993 Lexus Es 300

1 Answer

1997 lexus es300 over heats all of the sudden when not moving. already replaced fan relay switch.


Reference to Lexus getting hot after engin run for a short time: Replace the sensor behind the engin radiator cap on engin.

Aug 31, 2009 | 1993 Lexus Es 300

1 Answer

Location of fan blower in 1995 Lexus LS 400


fan blower motor is under dash on passenger side.

May 21, 2009 | 1995 Lexus LS 400

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