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#1
08-12-2004, 01:08 AM
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help needed
I need to know what the PCM is and what it does, I just bought a 96 camaro and the seller told that it needed a new PCM in order to make the ac work. I need help badly I'm new to these cars.
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#2
08-12-2004, 02:47 AM
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Re: help needed
Welcome to the Forum!
The PCM is a digital computer (powertrain control module) It regulates ignition timing, air-fuel ratio, emission control devices, charging system, certain transmission features, speed control, air conditioning compressor clutch engagement and idle speed.. They are fairly expensive and dont fail very often.. I would do a quick a/c clutch test and pressure test before you replace the PCM.. if you arent able to, bring it to an a/c specialist and have them check it out
__________________
1991 Camaro Z28
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#3
08-12-2004, 02:52 AM
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Re: help needed
yea... not likely that the computer is at fault for an A/C problem. Have a professional investigate A/C system. Most will diagnose for free or relatively cheap.
__________________
 90 Camaro RS V6 - swapped to V8 -350 block, GM Vortec L31 Heads, Edelbrock Performer RPM Vortec intake, 750cfm carb, CompCams XE268 Camshaft ESTIMATED 360-420 hp 380-430lb/ft torque 
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#4
08-12-2004, 09:16 AM
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Re: help needed
yeah, new comp is rather pricey. explore what else it could be...
__________________
 *Better power-to-weight ratio than a C6 corvette*
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#5
08-13-2004, 03:44 AM
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thanks, the pcm description helped me a lot
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#6
08-13-2004, 03:47 AM
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Re: Re: help needed
Quote:
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#7
08-13-2004, 03:53 AM
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is the pcm also called the primary control module?
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#8
08-13-2004, 09:16 AM
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Re: help needed
power control module...
__________________
*Better power-to-weight ratio than a C6 corvette*
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