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AC only Blows out bottom by Randy F
Started on: 05-30-2015 03:19 PM
Replies: 5 (99 views)
Last post by: kyunderdawg on 05-31-2015 12:18 PM
Randy F
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Report this Post05-30-2015 03:19 PM Click Here to See the Profile for Randy FClick Here to Email Randy FSend a Private Message to Randy FEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hi all last June I had the AC converted over to new Feron and I turned on my air and only blowes out the bottom but its cold any help?
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jscott1
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Report this Post05-30-2015 03:28 PM Click Here to See the Profile for jscott1Send a Private Message to jscott1Edit/Delete MessageReply w/QuoteDirect Link to This Post
When you say bottom you mean where the heater vents are? a/c should never blow from there. Sounds like your mode control motor is not working properly. This failure probably occurred independent of converting your system you just never noticed. When you push different buttons from "Heater" to "defrost" you should hear the motors cycling. If you don't there is a problem.
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Randy F
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Report this Post05-30-2015 05:30 PM Click Here to See the Profile for Randy FClick Here to Email Randy FSend a Private Message to Randy FEdit/Delete MessageReply w/QuoteDirect Link to This Post
No there is no noise when changing the settings and yes I mean the floor vents
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kyunderdawg
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Report this Post05-30-2015 08:16 PM Click Here to See the Profile for kyunderdawgSend a Private Message to kyunderdawgEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jscott1:

When you say bottom you mean where the heater vents are? a/c should never blow from there. Sounds like your mode control motor is not working properly. This failure probably occurred independent of converting your system you just never noticed. When you push different buttons from "Heater" to "defrost" you should hear the motors cycling. If you don't there is a problem.


Wow. I think you just solved my issue. When I cycle through my buttons it only comes out at the windshield. How expensive/hard is this to resolve?
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jscott1
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Report this Post05-31-2015 12:46 AM Click Here to See the Profile for jscott1Send a Private Message to jscott1Edit/Delete MessageReply w/QuoteDirect Link to This Post
There are two little motors that control the airflow on the HVAC unit. Your problem could be many things... the doors themselves get sticky after a while and don't want to move. Maybe the motor is unable to move them? This can happen if a car has been sitting for a while, or if the a/c has not been used in a long time. If the motors draw too much current they can cause a thermister to blow on the control unit.

Of the mode door actuators, one of them is easy to get to, the other not so much. They are available from the Fiero Store for $20.00

If it were me I would first replace the head unit with a known good one and see what happens. If that doesn't fix it I would buy two actuators and replace them and see what happens. If that doesn't fix it you might have a wiring issue somewhere in the dash between the two.

[This message has been edited by jscott1 (edited 05-31-2015).]

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kyunderdawg
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Report this Post05-31-2015 12:18 PM Click Here to See the Profile for kyunderdawgSend a Private Message to kyunderdawgEdit/Delete MessageReply w/QuoteDirect Link to This Post
Think you, sir. I have a car at the local yard that I'm fixing to pull parts from and it still has the HAVC controls in it. I'll see what happens then.
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