M931 oil pressure

M936 Dave

New member
27
15
3
Location
Spring Hill TN
The truck has roughly 3k miles on it and has done this since it had roughly 800 miles. As soon as you turn battery switch on and then ignition switch the oil pressure gauge is pegged out. Ive unhooked the sending unit and its still pegged. Some days it will act normal but I'm thinking its stuck or went over the needle stops. Where do I get another one without having to go aftermarket I.e autometer etc. And the passenger side fuel tank always reads full even though its not.
 

simp5782

Feo, Fuerte y Formal
Supporting Vendor
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4,776
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Location
Memphis, TN
The truck has roughly 3k miles on it and has done this since it had roughly 800 miles. As soon as you turn battery switch on and then ignition switch the oil pressure gauge is pegged out. Ive unhooked the sending unit and its still pegged. Some days it will act normal but I'm thinking its stuck or went over the needle stops. Where do I get another one without having to go aftermarket I.e autometer etc. And the passenger side fuel tank always reads full even though its not.
Ebay or any surplus dealer like Memphis equipment. When replacing the gauge I recommend a ground modification since all the gsuges ground thru the dash board screws. I recommend a good ground on the firewall then run a spider of ground wires to the gauge holder brackets to ground each one that needs it.
 

M936 Dave

New member
27
15
3
Location
Spring Hill TN
Ebay or any surplus dealer like Memphis equipment. When replacing the gauge I recommend a ground modification since all the gsuges ground thru the dash board screws. I recommend a good ground on the firewall then run a spider of ground wires to the gauge holder brackets to ground each one that needs it.
Just noticed the other day the fuel gauge is pegged full as well on either tank. Unplugged sending unit and tapped on tanks with dead blow and nothing changed
 

simp5782

Feo, Fuerte y Formal
Supporting Vendor
10,666
4,776
113
Location
Memphis, TN
Just noticed the other day the fuel gauge is pegged full as well on either tank. Unplugged sending unit and tapped on tanks with dead blow and nothing changed
Remove the wire going to the sender and check for power. If it has it then ground it out and see if the gauge goes full or if it drops to E when you unplug it.

Probably going to be bad sending units
 
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