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Yesterday I bypassed my Ac and removed the compressor from my my 92 4.9. This morning when I started it up i noticed that my voltage meter was reading around 9-10 volts when it usually is 12-14. So i decided to put the A/c compressor back on and was reading the usual amount of volts. Is there any reason for this?
Thank you
I got a smaller belt and it turns the alternator and I get normal voltage coming from the alternator. But not reading normal on the gauge. Is there any possible way the electrical connection that goes to the compressor cause it to lose that much voltage. I'm not an electrical guy so I don't fully understand how it could possibly work.
No, it doesn't make sense. I'd assume you didn't let the wires ground out or anything. Does it make any difference if your heater control is on a/c - defrost or not ?
Maybe there's some weird wiring thing or something, but I've never heard of it before.
Does just unplugging the wires at the compressor do the same thing, or is it only when you take the compressor off ?
Maybe someone else has an idea, I'd be interested to hear.
When I move the heater control with the A/c still plugged in and running there is a slight drop nothing major. And when I unplug to electrical connection to the compressor itself there is also a slight drop. But neither one of those compare to when the compressor was off.
Seems like the shorter belt isn't doing it. They make an a/c delete pulley. They sell around here for about $75 at the parts store, but I see them on rock auto for about 25.
If just taking the compressor off and running a shorter belt was a good solution, I don't know why they would bother making a delete pulley. Must be a reason.
5.0 A/C delete pulley
The shorter belt thing doesn't seem to be working for you so maybe you should look into the pulley. Got a picture around here somewhere - they just bolt on to 3 of the compressor bolt holes.
03-26-2015, 02:22 PM
Low voltage after A/c bypass
