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1997 Ford Escort. Heater fan has first three speeds but no top speed. Anyone know how to fix it?

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Posted on Dec 04, 2014


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Posted on Jan 02, 2017

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SOURCE: I have an 1997 Ford

If the blower motor fan runs only on high speed then the problem is resistor.Replacing resistor solves the problem.Because resistor is the part which control blower motor fan speed,that is low,normal and high.If the resistor gets faulty the motor will only work on high.But in your case the blower motor is running the fan on low speed in this case there are two possibilities, 1)Either the switch is faulty.But you have already replaced the switch. 2) The other possibility is faulty blower motor itself.The motor is got weak,in the motor there are copper coils,this coils gets burnt out slowly ---- slowly and motor gets weak and runs slow.So the motor needs replacing. ----------- Also you mentioned that blower fan got burned out,so this can be indication that motor is getting overheated,because its got weak and this burned the fan,this fan can burn again if motor not replaced.Also you can try this remove the motor and clean the motor connections,if they gets dirty and corroded then it can not let the motor to control the fan as required.So try cleaning the blower motor connections and then see if the fan is getting operated on all required speeds if not then motor needs replacing.This blower motor is a 12 volt part.You can measure the voltage to the blower motor switch and motor itself,to see if you are getting required voltage.If not then motor needs replacement.------------------ This will help.Thanks.Helpmech.

Posted on Jan 30, 2011

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SOURCE: first 2 speeds of the fan wont work for heater

sounds like the switch and is fairly easy to remove and replace the switch ..

Posted on Sep 07, 2009

  • 543 Answers

SOURCE: 99 ford escort 5 speed won't move

yes axle could be broken or clutch could be blown out of it

Posted on Oct 12, 2009

  • 231 Answers

SOURCE: how to fix a heater fan speed control

this sounds like you need a new blower motor, check fuses first if not blown replace blower motor

Posted on Apr 18, 2010

  • 957 Answers

SOURCE: Low speed on heater fan does not work. All other

You will need to inspect and test the speed control resister and the speed control knob first. What have you done so far?

Posted on Apr 22, 2010

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1 Answer

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