oil pressure sender

[boaterntexas]

I believe I have a bad connection on my oil pressure guage, becuas eof the dance the needle does, bUt i don't know which wires to check on the engine. my in-jun is a 1990 merc 3.0 and help would be appreciated.

 

[boaterntexas]

Re: oil pressure sender

no-one knows

 

[Spidybot]

Re: oil pressure sender

The oil pressure sender is a plug-like switch placed somewhere near the oilfilter, on the block.<br /><br />Isn't it possible to find the wire on the instrument and follow it towards the engine? At the same check for errors or damages to the wire?

 

[snapperbait]

Re: oil pressure sender

Along with the connection at the sender (single wire, color?) on the in-jun , check and clean both positive+ and negative- at the back of the gauge connections...<br /><br />Bad/loose connections at any of the gauge connections can cause the problem you describe...

 

[boaterntexas]

Re: oil pressure sender

Thanks guys. what opil pressure is exceptable for this motor? (1990 merc 3.0) even before the dance I never really saw it get over 40

 

[akriverrat]

Re: oil pressure sender

rule of thumb...10 psi per 1000 rpm minimum.