My 1988 LFX F40 build. (Page 3/68)
Daryl M JAN 17, 02:43 AM


Does anyone know what these wires are? This is the AC/C compressor from my donor car (2013 Impala LFX engine). Two wires.
Thanks
Daryl
wftb JAN 17, 07:26 AM
If those are the only wires going to the compresser, they would have to be the power feed.
Will JAN 17, 11:13 AM
Compressor clutch connectors are usually next to the pulley. If the compressor clutch connector is elsewhere, this would be a pressure transducer. If this is the only connector on the compressor then, as noted above, it has to be the compressor clutch.
Daryl M JAN 17, 09:41 PM
It is not the compressor clutch. The pressure sensor supposedly has 3 wires. This has two. I've found an entry in Rockauto's listing for an refrigerant temperature sensor, but I can't find a photo of it. Just looking for someone that knows for sure. Thanks.
msweldon JAN 18, 12:30 AM
I've got the FSM for the XTS with LFX and LF3.. let me see if it uses the same compressor and if so find out what those wires are....


What color are the wires coming from the harness to the connector?


What other color wires are going into the compressor?

[This message has been edited by msweldon (edited 01-18-2019).]

Daryl M JAN 18, 03:07 AM
According to the Rock Auto site the XTS and Impala don't use the same compressor until 2017 model year. I won't be able to check wire colors for a few days, but I will do it when I can.
msweldon JAN 18, 11:26 AM
Yep... I quickly found that out as well.... but it sure looks like an AC variable displacement solenoid valve especially given it relative location to the refrigerant lines. As Will asked, is there also another set of wires coming out of the compressor?

[This message has been edited by msweldon (edited 01-18-2019).]

Daryl M JAN 18, 01:46 PM
The clutch has wires going to it, but these are the only wires that actually connect to the compressor. Do you know how the variable servo works? How many wires go to that type of servo?
msweldon JAN 18, 03:58 PM
I'm not an expert on VDC's by far and these to links will give you far better explanations than I could give..

https://axleaddict.com/auto...lacement-Compressors
and

https://axleaddict.com/auto...r/vdcadjustorconvert

the older are diaphragm controlled and the newer are electronically controlled through PWM... no idea which yours or the one on mine are yet... probably electronic however given the late model's they are..
Daryl M JAN 18, 11:47 PM
MS Weldon in, thanks for the info. This will help allot.

[This message has been edited by Daryl M (edited 01-19-2019).]