HT4100 4.1, 4.5, 4.9 Discussion, Service A/c Light 4.9 '93 Sedan... in Cadillac Engine Discussion; 149k miles, Had issues with power steering leak. Was on highway and the pulley broke off and sheared the a/c ...
- 04-08-14 08:17 PM #1Cadillac Owners Member
- Automobile(s): 93 Sedan DeVille 4.9
- Join Date
- Feb 2014
- Columbus, Oh
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.
- 04-08-14 08:48 PM #2
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.
- 04-09-14 11:49 AM #3
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.