Michelob779

my blower motor works fine but no matter how long i run the car
the air is always cold
can anyone tell me how to trouble shoot this
i have the haynes manual and couldnt find it anywhere.
(87 turbo)
helps greatly appreciated
thanks

rotorforce

https://www.rx7club.com/showthread.p...owing+cold+air

tmking66

I had this happen to an 88 vert. I was the air mix motor which is on the driver side of the heater core. According to Icemark, when these go bad they usually take out the logicon also. I had an extra logicon so when I got another air mix motor I also swapped in the logicon and now the heat works great. You can test yours by finding the air mix motor and watching to see if the linkages move as you slide the temp control from cold to hot and back. If it does not move it is a pretty good bet that you have found your problem.

hope this helps.

Michelob779

thnx guys

Icemark

I have posted a couple of times on how to test the air mix motor as well

ProjectKN

I have the same problem as you Michelob. I flush the coolant, change the thermostat and other stuff, still couldn't fix it, so i took it to the shop weeks ago and they fixed it for $75 bucks, cheap. problem: THe heater control unit was defective, the hot and cold switch was bad which led the valve to the heater core to stay closed, so no heat was blown into the inside.