Question about 1988 Acura Integra
I checked the fan motor and it is good, fuse is good replaced the coolant sensor and also the coolant fan relay.. fan still does not turn on when motor heats up.. What else is there to look at..
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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
I would follow the wiring from the fan to the engine. There should be a temperature switch that controls an electrical circuit based on engine metal and coolant temperature. It controls the cooling fan, temp light or guage, fuel mixture, emission controls, and ECU functions. It is usually brass or stainless steel and is threaded to go into the engine block.
Posted on Jul 09, 2009
Ive run into this a few times,you have a bad coolant fan sensor, this car uses two one operates the fans when the key is off and the other operates them when the car is running, theres one sensor in the front cooling housing and the other on the rear housing, replace the other coolant sensor and that will solve your problem, take note theres two sensors on that rear housing one for the fan and one for the computer. hope this helps.
Posted on Oct 09, 2010
it may not be the relay but the cooling fan itself failing intermittently, I had the same
problem with an 04 PT cruzer and the fan was intermittently failing (if the fan has an open frame on the motor water gets into the motor). I replaced the relay with no success
(located in the engine compartment as yours will most likely be). Once I replaced the
fan itself, the problem went away and the A/C functioned much better. Hope this helps.
Posted on Jun 25, 2011
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