Oil Pressure Gauge Bouncing (1 Viewer)

[fj40mayo]

I have an aftermarket oil pressure gauge in my '73 FJ40. Parked, the needle is fine and shows the correct operating pressure. When I drive, the needle vibrates and bounces around, but is still near the correct pressure. How do I get the play out of the needle?

 

[76FJ40]

If it's an electric gauge, you likely have either a short to ground in the wire to the sending unit or a bad sending unit. If it's a VDO gauge, you can get diagnostic instructions at the VDO site.

 

[fj40mayo]

Its not electric. Its got a stainless hose that goes from the rear of the intake manifold (near the distributor) to the gauge. Oil comes thru the hose to the gauge.

 

[jm]

In the event it's not bouncing 'cuz you bought a REALLY CHEAP gauge... try adding a snubber.

jm