Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Radiator fans are always operating, even when the high side reaches 425 psi. and shuts the system down.
Only was able to get about 13 oz. total into this system that should hold about 1.4 lbs. (22.4 oz.) - Have three attempts already, and losing money on this job.
System never gets down below about 50 psi. on the low side and immediately climbs above 300 psi. on the high side and just keeps rising until pressure switch cut out - I'm assuming 425 psi.
Try completely discharging the system completely and then recharging. A restriction in the system can cause high pressures on the high side, but the low side pressures should be lower than normal.
I ended up just filling it until values were 'ok' not perfect. I think we needed to replace a few tinngs. But, he wouldn't go for it. -used car dealer
Thanks again, you are the man!