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Question About Oil Pressure Gauge On A 91 | Joined: Aug 2009 Posts: 937 Likes: 36 old hand | OP old hand Joined: Aug 2009 Posts: 937 Likes: 36 | Can anyone tell me where on the stock oil pressure gauge located on the stock gauge cluster on a 91 with a 5.0 is the needle supposed to be when idlling and when moving. Right now it sits just above the “red” maker to the low end when idling and gets up to past the quarter marker when going down the road. If not correct probably will try replacing the oil pressure sender and see if that corrects it. Just got the van out on the road yesterday for the first time since trailering it home last October and drove it for about hours total (been working on it all winter and spring). Everything seems ok, seemed to run pretty well. Thanks
Last edited by soundhd; June 28th 2022 12:38 pm.
Recently purchased (10-2021) a 1991 Chevy G-20 “Shorty”. Past vans are a 1976 Chevy G-10 (purchased new in 1976 & sold in 1995). A 1978 Chevy G-20 Shorty purchased in 2010 and sold in 2015.
| | | Re: Question About Oil Pressure Gauge On A 91 | Joined: Jun 2010 Posts: 18,308 Likes: 569 | Joined: Jun 2010 Posts: 18,308 Likes: 569 | Your about a 1/2 qt low ... maybe a clogged filter ...
SUNSHINE VANS-VAN DIEGO ADRENALIN BY THE GALLON & CHASIN RACIN ONE FOR THE DIRT & ONE FOR THE STREETS '93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB '92 CHEVY G30 454 BEAUVILLE EXT 146" WB | | | Re: Question About Oil Pressure Gauge On A 91 | Joined: Aug 2009 Posts: 937 Likes: 36 old hand | OP old hand Joined: Aug 2009 Posts: 937 Likes: 36 | Oil is full, changed it early this winter.and the filter.
Recently purchased (10-2021) a 1991 Chevy G-20 “Shorty”. Past vans are a 1976 Chevy G-10 (purchased new in 1976 & sold in 1995). A 1978 Chevy G-20 Shorty purchased in 2010 and sold in 2015.
| | | Re: Question About Oil Pressure Gauge On A 91 | Joined: Oct 2021 Posts: 271 Likes: 32 enthusiast | enthusiast Joined: Oct 2021 Posts: 271 Likes: 32 | My 91 G20 5.7L oil pressure gauge behaves similar to yours. Did changing the oil pressure sender make any difference?
1991 Chevy G20 5.7L | | | Re: Question About Oil Pressure Gauge On A 91 | Joined: Aug 2009 Posts: 937 Likes: 36 old hand | OP old hand Joined: Aug 2009 Posts: 937 Likes: 36 | Have not gottEn to that yet…..have had other house/property “stuph” pop up recently. Going to order the oli pressure gauge sender today as a matter of fact….thanks for the reminder… My 91 G20 5.7L oil pressure gauge behaves similar to yours. Did changing the oil pressure sender make any difference? My 91 G20 5.7L oil pressure gauge behaves similar to yours. Did changing the oil pressure sender make any difference?
Recently purchased (10-2021) a 1991 Chevy G-20 “Shorty”. Past vans are a 1976 Chevy G-10 (purchased new in 1976 & sold in 1995). A 1978 Chevy G-20 Shorty purchased in 2010 and sold in 2015.
| | | Re: Question About Oil Pressure Gauge On A 91 | Joined: Mar 2011 Posts: 514 Likes: 55 addict | addict Joined: Mar 2011 Posts: 514 Likes: 55 | Cold start it should peg the needle (60+ PSI) warm- almost 30+ Middle of gauge, hot- lucky to have it above 20. Don't judge your oil pressure at idle hot, kick up the throttle to a fast idle around 1000 rpm then look. The senders are mostly crap, they leak at the fitting and at the electrical connection. You can clean the connection and make sure it's tight. A little pinch with pliers will help and I mean little don't crush. when driving at a steady pace you should see a constant reading. Remember the van is old and GM sold cars in the mid 80's that were only ment to go 100k don't expect much, but they will last longer. | | | Re: Question About Oil Pressure Gauge On A 91 | Joined: Jan 2014 Posts: 2,290 Likes: 137 veteran | veteran Joined: Jan 2014 Posts: 2,290 Likes: 137 | Best thing you could do is ditch the "dummy gauge" (without numbers) and install an aftermarket gauge with numbers, either digital or analog. Way more accurate than the sweep style gauges. | | |
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