Let me guess; it's only happening when the engine is warm and it's idling. If that's right, the engine bearings are getting a little older and the gap between the bearing and the crankshaft is increasing. It's normal and as long as the oil pressure comes back up when the engine is running at normal operating speed, everything is still ok. If you want to have the oil pressure back in the normal operation range, try this. Next time you change the oil, go to a slightly thicker grade oil. If you've been using 5W15, change to a 10W30. Those numbers identify the "viscosity" of the oil at specific temperatures. The higher numbers indicate a thicker viscosity. If your bearings are worn, a thicker oil will not leak out as fast and will keep the oil pressure up. It will also help the bearings last longer now that they're a little worn.
I have a 1999 with the 3800 engine. The owner's manual says the horsepower is 205 without the supercharger and 240 with the supercharger.
It might be the supercharger going bad. The supercharger has a little coupler that is located in between the supercharger nose and the main body. This coupler is located inside and once it starts to wear out it will start making a clunk sound. You can replace the coupler, replace the nose, or rebuild the whole supercharger. Thank you, From www.SuperchargersOnline.com
It is a special blend oil called "Supercharger Oil" The GM dealers can get it however it will cost around $8-$10 for a 4 oz bottle. Thank you, From www.SuperchargersOnline.com
You don't. It uses the same oil for lube as the engine. When you change the engine oil, you are changing the supercharger oil. * On the 92 PA ultra, The supercharger is sealed. The oil plug is next to the drive pulley, on the side closest to the firewall. Suck the old oil out with a turkey baster or similar, and refill with a high quality synthetic, or with GM specific Supercharger oil.
Best bet would a factory service manual, or Chilton or ?? I retired in 1994, sorry I can't help
32 psi 32 psi pressure
I have a '92 PA Ultra. The Ultra has the supercharger. There are two sets of serpentine belts for this configuration.
The supercharger has a single separate serpentine belt than the one for the accessories (alternator, a/c compressor, water pump) . The superchrager belt is a 6 rib 72" effective length. The accessories belt is a 6 rib 93.5" belt.
I believe it is 32 psi.
Try Gm And if you tear it apart and get them "Matched up" at a bearing supplier. There are also several on line stores dedicated to the Buick supercharged engine's.
fuel pessure test
you CAN remove it and replace it with a regular intake, however the car will run like sh!t. The supercharged engine has a lower compression ratio and withour boost it will not run well. If you want to get rid of the supercharger (why would you) you have to get rid of the entire engine....or to make things much simplier the whole car.
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The Supercharger can be disconnected. My 1998 Ultra had a pulley lockup which caused the belt to come off. I pulled the intact supercharger belt out of the way of moving parts till I had a chance to work on it. A few months later I replaced the pulley and belt, which required raising the engine, pulling bolts out of the motor mount, and weaving the belt into place. I'm not sure it was worth the effort. The car runs very good without boost, for most driving. I continued to use premium fuel, of course. One could just cut the belt off and drive without the supercharger, if desired. So there you have it. P.S. go to Discussion for more tips.
leaking wheel cylinder
Check your owners manual.
I would try replacing the fuel pressure regulator. That was my problem.
30 psi cold 32 psi hot
Use your right foot and apply pressure to the brake pedal.
The oil pressure sending unit is located on the oil filter bracket about 9 inches above the filter.
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