1990 Mazda B2600i Air Conditioning

Tiny
PURPLE 92 SS
  • MEMBER
  • 1990 MAZDA TRUCK
All,

I have a 90 Mazda B2600i Extended Cab LE5 Manual transmisison truck, that has served me well over 180,000 miles so far. The probelm I have now, is that the Air conditioning no longer functions by the button. I.E. When I turn the truck on, push the AC button in, turn on the system, I do not get cold air.

I troubleshot the system to the best of my ability, and found that the system is full of freon, and cools wonderfully when I bypass the wire, and connect a hot power to the single wire that goes to the AC Clutch compressor unit. This tells me that for some reason my AC clutch is not being given power, to turn on. I think it may be the AC relay, however, I have no clue as to where this is, nor does the local dealer, or anyone else online that i've been able to find.

The AC button, should light up green when active, and it does not. The AC fuse is good, as well.

Any and all help is greatly appreciated, as today it hit a record high of 104* with a heat index of 114* here in Columbia, SC.

Thanks.
Do you
have the same problem?
Yes
No
Wednesday, August 8th, 2007 AT 5:10 PM

3 Replies

Tiny
PURPLE 92 SS
  • MEMBER
Anyone? Someone? Please?

107* today
heat index 117*

Help! :)
Was this
answer
helpful?
Yes
No
Thursday, August 9th, 2007 AT 5:27 PM
Tiny
GWTURNER
  • MEMBER
I am dealing with a similar issue on my 93 b2200. When I turn the fan control knob to position 1 or 2 the fan does not come on but the a/c clutch kicks in. When I turn the fan control knob to positions 3 or 4 the a/c clutch turns off and the fan turns on. The clutch and the fan will turn on if I can wedge the knob between speeds 2 and 3.

I have replaced the fan speed switch (?) But it did not help. If I ground out the a/c button then the a/c will stay on with the fan blower in position 3 and 4.

I will keep you informed if I can get mine going and maybe yours will be a similar problem.
Was this
answer
helpful?
Yes
No
Saturday, September 8th, 2007 AT 6:58 PM
Tiny
GWTURNER
  • MEMBER
Ok I figured my issue out, it was the blower fan resistor (sits on top of the a/c duct behind the glove box). I also found the relay I beleive you are looking for.

If you take the glove box out you will find a grey relay box with four wires going to it. Two are blue (one with a different colored strip), one green, and one black wire. It sits about six inches back just left of the center of where your glove box latch would be. It is attached to a metal bar by a grey plastic tab. That I believe would be your a/c button relay (or at least when I was testing my system thats what it appeared to function as).

Hope this helps.
Was this
answer
helpful?
Yes
No
+2
Wednesday, September 12th, 2007 AT 8:34 PM

Please login or register to post a reply.

Recommended Guides