Every once in awhile I start my truck and my oil pressure guage says I have no oil, so I shut my truck off and start it again and then its fine. I check my oil every day and its fine. Whats goin on with it?

 

Usually it is a bad oil sending unit if there is no engine noise.

 

agreed. oil sending unit right above the oil filter. go to your local auto parts store and pick one up

 

Are they hard to replace?

 

no, they just unscrew from the block

 

sweet! thank you

 

Thanks Mr. Weedahoe. I have one on order & should have it installed this evening after work. Should I put any type of sealant on the threads? Teflon ect?

Thanks

 

No thread sealant because the threads provide ground thro the block for the sensor

 

Is there any danger to no replacing this right away? My pressure dropped to zero and the check guages light came on, but no engine noise or check engine light. 2005 Ram 2500 5.7L. Don't want to damage something trying to get home from work and then back to the parts house tomorrow.

Thanks!!

 

Only damage is that IF you really are at zero pressure you wont really know it and blow the engine