At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Could be the blower motor resistor - they have a tendency to burn out. Symptoms are losing one or more speeds on the blower fan. It's an easy replacement, the resistor is accessible under the dash.
In the beginning you should check for voltage and ground. The 50amp fuse marked AC powers the blower motor and the motor is grounded. The high speed relay bypasses the resistor. So you should have power coming from the fuse and thru the high relay. Then the resistor for the other speeds gets power from the heat and ac control module which also controls the blend doors. You may need a shop manual or repair book to get the diagrams.
could be the blower motor it self. usually when resistor failes the blower will only work on HIGH or number 4 on your dash. when resistor burns out, all speeds other than 4 tend to stop working and blower works on high because its getting 12V/batter voltage applied to it, when on lets say speed number 3 the blower gets less voltage thus resulting is slower operation. put 12V/battery voltage to the blower motor directlly and see if it comes on. it should crank pretty fast so hold it tight when you are ready to put battery voltage to it.
The blower motor resistor is the culprit.Usually is located near the blower motor.Generally an inexpensive repair.However it is possible that the blower motor may have caused the resistor to burn out.
Three possibilities. AND all you can do yourself!
1. Hi/Low Blower Relay. However these usually fail on low and works on High.
2. Blower Control Switch.
3. Blower Motor Resistor.
If you do not have one: buy a Voltmeter, available for $6 at Walmart.
If you do not have one: buy a Haynes or Chilton Manual at most auto parts stores for $20-$25 dollars. I say this because you are obviously going to keep this vehicle. It will have most of the information with pictures to assist you.
Quickest way to determine which one?
Finding the Resistor....Go on line to autozone.com or advanceauto.com. Answer the questions on year, make, model and engine and go to "look up parts" or click on "Replacement Parts".
Pull up the Hi/Low Blower Relay.
Know you know what you are looking for.
This Relay is located near the Blower Motor.
The System goes: Switches, Relay and/or Resistor, Motor.
Unplug the electrical connection from the Switches going to the Relay.
Turn the engine on. Turn the Selector to Low and using a voltmeter, check for voltage coming from the Switch. Turn to High and rechaeck for voltage coming fom the Switch. No voltage on High? The Switch is bad.
Do the same with the Relay to Resistor connection and or Relay/Resistor to Motor connection. Check the Low and the High voltages.
Let me know if this helped or if you have additional information or questions. Feel free to contact me at FixYa.com!
Your blower motor resistor needs to be replaced. when they go bad, for some reason the fan will only work on high. Replace that resistor and you will be good to go. Let me know if you have any further questions. Thanks for using FixYa!
×