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Subject: Re: Air Conditioner vibration 1993 with headers by Steve40th on 2021/9/11 21:00:08
Quote:
CorvetteBob wrote: From here I’d try looking at the entire accessory drive system. My reason is that on an 86 it sounded all the world like the steering pump was shot. Turned out to be a diode in the alternator. My point is A) yes, something may have happened when you changed the a/c clutch. But after re-reading your description, I think the compressor is reaching the end. B) if you still have the old tensioner, try putting it back on in case you got a bad one. C) check your water pump and other belt driven components. You never know what might turn up. I know it’s not much to go on, but it might be worth a try, and it’s free to listen to. Best of luck, again, I hope this helps.
I ended up putting a new tensioner on as the replacement was bad. Its quiet and barely moves when revving the engine. 93 has the LT1 water pump driven by camshaft. I have one belt and everything is okay. Remember, it only does it with AC and 2/3rds type pulls. Haven't tried it WOT, but AC would shut off during that pull. I am wondering if , when I did the clutch, I need to check the gap, as the spacer is the only one that came out. Maybe there is a mesaurement to check, and I might need to adjust. If compressor is going out, I will need someone to vacuum it out and put back in.. R12 is an issue, unless they can pull it all out. Or convert to 134A
