A/C Question
Thread Starter
Pro
Joined: Jun 2001
Posts: 656
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From: Fort Worth TX
A/C Question
Ok guys when running a Diagnostic on an 88 vert C68 electronic A/C system it reads a code of (-01) which translates to Feedback Potentiometer-open. What has happened the compressor will not engage. The system is charged so its not low bypassed the pressure switch still no compressor engagement so i ran diagnostic on the system and came up with the feedback potentiometer thing. Can anyone help me understand more on this situation what exactly do i have to replace and so on ? Appreciate the help.
Thread Starter
Pro
Joined: Jun 2001
Posts: 656
Likes: 0
From: Fort Worth TX
I think i did the diagnostic wrong it went into mode -01 then i should have advanced the mode to 8 by pressing the warm button then display the contents by pressing the cooler button. Stupid me !
Team Owner
Joined: Jan 2003
Posts: 20,292
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From: Summerland B.C. Canada
Originally Posted by cajun86
That was the Diagnostic readout. I had to press and hold EXT TEMP button then press and release Auto fan and the code read out -01 which relates to feedback potentiometer-open ....
Le Mans Master
Joined: Dec 2000
Posts: 7,839
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From: San Diego, Ca
The code you referenced means the dash assembly isn't getting a signal from the motor that controls the position of the temperature door. It uses this to determine how far the door is open or closed, but even if it had the code - or any code, the '88 wouldn't shut down the compressor. Check charge first - it may be low or out of gas.
