Engine/Transmission (1994 - 1998) No Oil Pressure Reading

[Jfam]

With 229k on my 94, I guess I can expect things to start failing. Yesterday the oil pressure gauge fluctuated wildly for a few seconds and then fell to 0. I was suspicious (and panicky), but doubted the oil pump had failed. The warning light did not come on and I pulled over immediately shut down and then started the engine and she ran fine. I opened the petcock on the Amsoil dual remote housing and oil shot out under pressure, so I closed it and kept going. Later the gauge began operating normally.



Sender I assume, but thought I would check with the crowd to see if anything else might be going on.



Thanks…. .

 

[illflem]

Most likely the sender. About the only advice I can give you is buy a replacement from Cummins or the dealer. Quite a few folks, me included, have found that cheaper aftermarket auto parts senders don't last long. Ends up costing you more plus you have to replace it twice.

 

[JohnE]

I agree on the sender and don't wait too long before replacing it. Mine puked 2 guarts of engine oil in 2 days. My 97 sender was not available at Cummins. That is the "Dodge" side of the engine. The dealer cost was actually pretty reasonable at $27 plus tax. I am also on my second replacement unit in a little over a month. The first one was just under a month old and started the dancing needle again. Replaced for free by the dealer.



Get a sending unit socket!!! PIA and expletive (deleted) job to do without and a 5 minute job with. I borrowed one from SMorneau for the second swap and it was a dream. I did find a socket at local auto parts store for $7. 99 plus tax while getting a spark plug for lawn mower. My tool box has grown.



-John

 

[zues]

Mine has 235000 miles and the oil pressure was dropping to zero and the check guages light would come on. Changed the sender and works fine.