Climate Control Question

[blender66]

I can't get the Auto Climate control in my '94 Q45 to do anything but blow cold air. I'm kinda new to this model (previous owner of a '92 G20) so, I'm not sure what to look for or check out.

Thanks!

AC

[Q45tech]

Follow all the test proceedures in FSM to check sensor and acuator movement.Hopefully you don't have a failed [broken hinge] on the air mix door [locked in AC position or heater door. Did you recently buy car and not check for heater operation?Sometimes the doors break on 94-96 and this causes owners to sell in summer before winter? 10-14 hours of labor as the dash must be totally removed to swap the door.

Just speaking of the worst case situation.

[blender66]

Bought the car about a month ago (when, of course, heat ain't necessary in Arizona), so no...didn't check to make sure heater worked. Just got a set of the Infiniti service manuals from someone here (PDF format) so I now have the FSM troubleshooting guide. I'll get to checking that out later :O)

AC

[blender66]

I checked the diagnostics on the auto amp, and it seems that code 25 (the sunload sensor) is either bad or disconnected. I have yet to check that, but I figured I would let ya'll know in case you had some info about it that isn't covered in the FSM (which one of the members graciously shared a link to download the FSM yesterday).

Thanks!

AC

[Q45tech]

Intense AZ sun probably destroyed it, just kidding hope that's all it is!

Unfortunately the diagnostic proceedure will show the heater [blender]door good [if the hinge is broken] as it just monitors the position of the motor which turn the door [the shaft break occurs after the position sensor]..........headsup just in case.

[elwesso]

If you need any parts.. let me know

Hopefully the sensor is it, but it does kinda sound like a mix door...

what does it do when you switch to ECON

[blender66]

Same thing. ECON works, but it never gets warm. All it does is blow cold air no matter what temp I set it to.

[911/Q45]

If you check the codes in the garage, the sun sensor will show bad. You have to be outside to get the proper test.

[blender66]

I was outside, although it the sun was setting after an overcast/rainy day. I suppose that would have caused it, eh?

[911/Q45]

Run it in the sun to be sure, should be plenty of that in Phoenix!

[docsmile71]

Follow all the test proceedures in FSM to check sensor and acuator movement.Hopefully you don't have a failed [broken hinge] on the air mix door [locked in AC position or heater door. Did you recently buy car and not check for heater operation?Sometimes the doors break on 94-96 and this causes owners to sell in summer before winter? 10-14 hours of labor as the dash must be totally removed to swap the door.

Just speaking of the worst case situation.

10-14 hours to take off the dash???? No wonder the car doesn't squeak...it's put together like a vault.

So if you got it repaired at a dealer, you'd be paying about $100-110/hour....that's a lot of money for heat. Just bundle up and keep the butt warmers on high.