Question about Cars & Trucks
If the cooling fan does not work then the AC will not work either. Solve the problem with the fan and you will likely have AC back.
Posted on Jun 10, 2014
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Posted on Jan 02, 2017
SOURCE: Acura MDX A/C won't come on
I went to an Acura dealer to buy the transistor for the rear A/C unit. The service advisor told me that the problem with the front A/C was probably due to a defective front transistor / resistor. I bought that part too.
The front transistor is located next to the blower motor under the dash on the passenger's side. It is secured by three or four small bolts. The one on the bottom left is very close to the carpet and the most difficult to get off and put back on.
The rear transistor is located behind the carpeted trim panel on the center console (driver's side). The carpeted trim panel is secured by clips only - there are no screws, so remove it carefully starting at the side near the accellerator pedal. Once the panel has been removed, reach inside a small hole in the metal frame to access the rear transistor. It is removed by twisting it and pulling it out. The hole in the frame is small and you might find pliers helpful.
After replacing both parts, the front and rear A/C are working. Apparently these transistors are common failures. If the A/C is out in your Acura MDX and the fuse checks good, a new transistor will likely solve your problem.
Posted on Oct 01, 2008
SOURCE: radiator fans won't come on
Hey I had the same problem with my 95 olds cutlass supreme. First i checked that the fans were receiving power by testing the voltage. Then I noticed that they were recieving voltage just not coming on. When the engine temp got pretty high, they finally came on, another words the gauge could be broken or the engine just does not tell the fans to come on until it has reached a high temp. So i started the vechicle, left it in park and gave it gas until the temp guage read very high, it reached like 230 to 250 then the fans came on. Try getting the temp up there and then see if the fans come on an dlet me know at firstname.lastname@example.org
Posted on Apr 14, 2009
SOURCE: cooling fan fuse
most likely the cooling fan has a short in it. disconnect the connector on the fan. If it doesn't blow now its the fan motor. If it still blows you have a short from the fuse to the motor. What this means is the hot wire is touching bare metal somewhere
Posted on Jul 17, 2009
You have to refer to your owners manual or an after market service manual for fuse locations but that is not the issue. There is a sending unit screwed into the block with a temp sensor that closes the circuit on the ground side when the cooling system reaches a specified temperature. There is a fuse between the hot side and the fan for over current protection (see manual). A bad sending unit is most likely the culprit. Measure the resistance or continuity when the engine is hot from the sending unit body which is grounded to the block, and the output terminal or black wire running to the fan motor. It should be closed or read less than 0.5 Ohms. If it is open or very high resistance replace it. Good luck to you. I hope thishelps
Posted on Jul 26, 2009
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