aftermarket ac through pcm redux
07-29-2008, 08:19 PM
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aftermarket ac through pcm redux any suggestions, on my classic ac system w/ Sanden compressor. Can't get it to trigger ac clutch relay. I've double checked all wiring and replaced the pressure sensor. System has normal pressures hi and low side. Its wired per factory. Is there a way to check output from sensor without the tech 2?
thanks.
thanks.
07-31-2008, 09:46 AM
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Are you using the LS1 to control your fans? If so, hotwire the AC clutch and see if the fans come on as the high side pressure comes up--that'll tell you the pressure sensor is working.
08-01-2008, 07:32 PM
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Thanks Rodder, I'll try that. I read somewhere that the schrader type fitting you buy in aftermarket may not allow pressure sensor to open valve enough . I used the docs blocks one. Any experience w/ this?
08-03-2008, 09:05 AM
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I used the Tubes-n-Hoses (owensresearch) switch port, and had it welded on by a local Tubes-n-Hoses dealer. I suspect the Tubes-n-Hoses fitting actually comes from Omega. I didn't measure the shraeder valve, but it seems to be working fine.
