Where is the low side port for ac on a 1990 oldsmobile ninety eight

There is some wiring help here, but really you need a repair manual or an auto-electrician with access to Alldata and the knowledge.

https://www.google.com/search?q=1980+Oldsmobile+Ninety+Eight+Regency,+AC+wiring

..

Given the car is 22 years old I will only guess

That is what we do here

I would say maybe the switch for the high beams is worn out

I guess that is on the steering column on the left side?

I have a 1990 Olds 3.8 V6. Installed a 715k6 belt bypassing the frozen AC compressor using the stock belt routing. Working great.
Thanks for the above advice

You can't connect the chaging can adapter to the wrong side it will not fit.

Any decent auto wrecker should have a dozen of those, or ebay.

Replace the crank pulley aka. balancer, they fall apart and knock.

if you are not experienced mech. maybe you should take it to one

low fuel pressure or none

It should tell you on the driver door or the panel by the door. Along with Tire information. My guess would be between 4k and 5k lbs. If you can't find it then google vehicle weight. I think the website is autospecs.com or vehiclespecs.com. There are sites that have that info.

that happened to me and I solved the problem by replacing the computer. It cost me $40.00 out of a junk yard and it has been running perfect ever since.