Service A/c Light 4.9 '93 Sedan...
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HT4100 4.1, 4.5, 4.9 Discussion, Service A/c Light 4.9 '93 Sedan... in Cadillac Engine Technical Discussion; 149k miles, Had issues with power steering leak. Was on highway and the pulley broke off and sheared the a/c ...
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    GEE_RIDE is offline Cadillac Owners Member
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    Service A/c Light 4.9 '93 Sedan...

    149k miles, Had issues with power steering leak. Was on highway and the pulley broke off and sheared the a/c line. Power steering problem has since been fixed. After fixing power steering problem, (Leak @ rack, and Pump and pulley replacement) i tried to use the defroster on a cold morning, Service A/C light came on in information center. I turned the defroster off an a few minutes later, ac light went off.... Do you think replacing the hose that was destroyed (but not leaking) could be a remedy? New belt was installed with pump and pulley. all was working fine until pulley broke.

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    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    You have no refrigerant pressure in the system. If you pulled your codes, you'd get a code for low refrigerant pressure. That's what's triggering the message.

    You'll need tore place the hose and refill the system.

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    delerium75's Avatar
    delerium75 is offline Cadillac Owners Fanatic
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    Re: Service A/c Light 4.9 '93 Sedan...

    It could even go a little deeper than that. If any debris got into the system when the pulley broke or from driving around, it could cause the compressor to fail as well. I believe the system can be flushed, which is probably what I would do if a hose broke. You'd probably need to replace the orifice tube and accumulator as well with it being open to the atmosphere.

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