On my 1985 500SEL, the oil pressure guage jumps to the top as soon as the key is in the number 2 position and does not move until the key is turned off, whether the engine is running or not. What voltage range should there be to the guage? Could it be the sender?

__________________
R. Downs
1985 500SEL (260,000 miles) SOLD!
1974 280 SOLD!
1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled)

"I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls.

Either the connector has come loose or the sender is toast.

__________________
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.

I concur with Jeff. You should have continuity between the sender post and ground with the engine off. Either the connection is really, really dirty or the sender is shot. Just went through this on the 560, turned out the sender was bad.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.

Thanks alot I will look at the sender and let you know

__________________
R. Downs
1985 500SEL (260,000 miles) SOLD!
1974 280 SOLD!
1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled)

"I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls.