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Volvo 850 How-To Bypass AC Thermal Switch

Need to know how to Bypass AC Thermal Switch ?

Phil:

“Since it’s that time of season and I had problems with my A/C thermal causing me problems I thought I would do a ‘how-to’ on bypassing it. I couldn’t find anything with pictures so here you go…”
First pic is of the A/C thermal (after I’ve cut the wires on both ends) but it gives you a clear shot of what it looks like…

Jimmy57 gives some background on this switch:

The high temp switch was problematic and was deleted later. The compressor mfr left it on as it was not needed by Volvos with high pressure switch since that also is the protection for compressor overheat.

I deleted them by unplugging the power lead from engine harness to wire into switch and unplugging the wire out of switch to the wire to clutch magnetic coil. Then you plug the power wire directly to clutch coil wire leaving the switch wires hanging in the breeze.”

All 7 hi-rez photos are in the Volvo Forum topic.

high temp switch1 - Volvo 850 How-To Bypass AC Thermal Switch

high temp switch2 - Volvo 850 How-To Bypass AC Thermal Switch

high temp switch3 - Volvo 850 How-To Bypass AC Thermal Switch

high temp switch4 - Volvo 850 How-To Bypass AC Thermal Switch

high temp switch5 - Volvo 850 How-To Bypass AC Thermal Switch

high temp switch6 - Volvo 850 How-To Bypass AC Thermal Switch

high temp switch7 - Volvo 850 How-To Bypass AC Thermal Switch

95 Volvo 850 T5R how-to bypass a/c thermal switch

Did this help you Bypass AC Thermal Switch ?

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1 Comment

Solved part of the issue, now the clutch engages but just for a second or two. I’m going to check levels and maybe the high and low pressure switches. Thanks a bunch.

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