Engine/Transmission (1998.5 - 2002) Oil Pressure Drop

[CCCRAM]

Hey gang, I'm curious whether anyone else ran into this problem...

Tonight I started the truck and I had a buzzer go off, then I noticed a red engine light on the dashboard panel indicated "check gauges" when I noticed the oil pressure gauge was all the way to "0". I immediately pulled over and checked the engine oil and of course it had a normal reading of full.



Then I restarted the engine and everything was back to normal.



What's going on here? Has anyone else experienced this problem? I will continue monitoring this but I was concerned whether this was a sign of a future problem.



Any help is most appreciated...

 

[cam4g63]

Well it could just be a voodoo anomoly that will never happen again - so you could just forget all about it. BUT, if it does it again, I would check the connector to the oil pressure switch. You'll find it just below the ECM's connectors (driver's side of engine). It has a large hex fitting, maybe disconnect the sensor and inspect and reconnect? Failing to be a bad connection, here or elsewhere, it may be the pressure sensor itself going out.

 

[RBerry]

I have noticed on my 98. 5, that if I put shifter in to drive, without waiting for the oil pressure to come up to normal. Sometimes the check engine light will come on and I will have no oil pressure on gauge. Restart and all is ok.

 

[PMalin]

Yes there are several posts about this. I changed my oil pressure sending unit to fix the problem. Do a search on this, you should find all kinds of info.

 

[daveshoe]

Do'nt let the dealer take your warning chime and pressure gauge to ''the happy land where gauges never reach zero''

I have read before that there is a TSB that changes / fools the info from the gauge so it always reads at least 40 PSI. Not too cool if you really do lose all oil pressure and you get no warning

Perhaps someone can post the thread that concerns the gauge workaround or advise if I am mistaken about it.

 

[Diesel Freak]

My Dad had this problem with his Y2K CTD. The oil pressure sending unit was TU.

 

[David Wheeler]

Old thread

CCCRAM



Here is the thread I started when the same thing happened:



https://www.turbodieselregister.com/forums/showthread.php?s=&threadid=10680&highlight=pressure



Best wishes!



David