faulty oil pressure gauge?

[robertsalverda]

Okay, I've a 98 12 valve 3500 and once in a while(especially after an oil change), when I'm slowing down at a light , the oil pressure gauge will immediately drop to zero and the check gages light will come on. If I wait for about 5 seconds, the light goes off and the gauge jumps up to the regular pressure. It is not a gradual drop or rise , which makes me think it is an electrical problem and not a mechanical one. Any help or ideas would be greatly appreciated.

Rob Salverda

 

[HEMI®Dart]

Here is the TSB for it: http://www.dodgeram.org/tech/tsb/1999/08-22-99.htm



I think the guys just change the Oil sending unit that have that problem.

 

[robertsalverda]

thanks a lot, Bill. That TSB decribes the problem exactly! Sounds like it should be covered under warranty also. Yeah, right.

 

[pathaymond]

we have similar truck and my oil sending unit did the same thing to me the staeler replaced mine for a way to high fee but it was worth the piece of mind that everything was ok been fine since the change about 25K ago hope this helps

 

[pwknapp]

Go to NAPA and buy the oil sending unit socket. About 12-15 bucks. Buy a new sending unit and just unscrew one and screw in the other. Oh don't forget to unhook the wires before using socket. JM. 02

 

[robertsalverda]

can I just put in a new oil sending unit, or do I have to get the PCM reprogrammed like it shows in the TSB that explains this problem?

 

[illflem]

Just a word of caution, quite a few folks have reported that non-dealer/Cummins senders don't last long. One part that you are better off skipping the auto parts store and paying the higher price.

 

[pathaymond]

I agree with iflem I was told to let the dealer or at least buy the dealer /cummins sender they are supposed to last longer it was not expensive to let the dealer do this for me. Around 50 bucks. Good luck.