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2004 dodge ram 2500 hemi oil pressure problems!

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  #1  
Old 11-30-2011, 12:18 PM
chaseboka20 chaseboka20 is offline
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Default 2004 dodge ram 2500 hemi oil pressure problems!

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?
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  #2  
Old 11-30-2011, 06:08 PM
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Usually it is a bad oil sending unit if there is no engine noise.
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  #3  
Old 11-30-2011, 06:30 PM
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weedahoe weedahoe is offline
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agreed. oil sending unit right above the oil filter. go to your local auto parts store and pick one up
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  #4  
Old 11-30-2011, 06:35 PM
chaseboka20 chaseboka20 is offline
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Are they hard to replace?
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  #5  
Old 11-30-2011, 06:40 PM
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no, they just unscrew from the block

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  #6  
Old 11-30-2011, 06:45 PM
chaseboka20 chaseboka20 is offline
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sweet! thank you
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  #7  
Old 12-01-2011, 11:32 AM
Willy McNasty Willy McNasty is offline
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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
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Old 12-01-2011, 12:58 PM
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No thread sealant because the threads provide ground thro the block for the sensor
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Old 05-11-2012, 11:58 AM
MikeWilliamson MikeWilliamson is offline
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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!!
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  #10  
Old 05-11-2012, 11:59 AM
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Only damage is that IF you really are at zero pressure you wont really know it and blow the engine
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Old 05-17-2012, 04:40 AM
toohipnsocal toohipnsocal is offline
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My 2006 ram 2500 big horn edition 4x4 would have the oil pressure gage drop when the check gages light came on and bell (ding ding) would sound, only when I jumped on the pedal to pass on the freeway ( like from 60mph to 70mph. I would have to pull over stop and shut off the truck to get the gage light to go off. I always would check the oil to make sure, and it was ok. Then one day the check gages came on and then the oil pressure showed 0 and the engine made a funny noise other than the ticking sound. I towed the truck back to my place and checked the oil and it was fine. I pulled the plug on the pan and nothing came out. I stuck a screw driver into the hole and out came the oil. When I dropped the oil pan, I found lots of little and big pieces of metal. Threw a rod. Pieces of rod pistons and ??. Get the check gages checked out Asap. A friend of mine sells Snap on Diagnois computer code analyzer and it said I had mechanical engine failure.
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Old 11-02-2012, 07:15 PM
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Quote:
Originally Posted by weedahoe View Post
agreed. oil sending unit right above the oil filter. go to your local auto parts store and pick one up
Question (yea, I'm having the same problem...) Rock Auto shows three different senders (big price spread, too!) so does anyone know the right one (2004 w/Hemi...) I'm getting tired of the 'double start' trick.
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  #13  
Old 11-02-2012, 07:27 PM
wingnutks wingnutks is offline
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I was having the same problem... oil pick up was clogged with sludge. When you romp on it the pump will out flow the pick up and oil pressure drops. Drop the pan and check it out asap.
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  #14  
Old 11-02-2012, 07:36 PM
wingnutks wingnutks is offline
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Quote:
Originally Posted by toohipnsocal View Post
My 2006 ram 2500 big horn edition 4x4 would have the oil pressure gage drop when the check gages light came on and bell (ding ding) would sound, only when I jumped on the pedal to pass on the freeway ( like from 60mph to 70mph. I would have to pull over stop and shut off the truck to get the gage light to go off. I always would check the oil to make sure, and it was ok. Then one day the check gages came on and then the oil pressure showed 0 and the engine made a funny noise other than the ticking sound. I towed the truck back to my place and checked the oil and it was fine. I pulled the plug on the pan and nothing came out. I stuck a screw driver into the hole and out came the oil. When I dropped the oil pan, I found lots of little and big pieces of metal. Threw a rod. Pieces of rod pistons and ??. Get the check gages checked out Asap. A friend of mine sells Snap on Diagnois computer code analyzer and it said I had mechanical engine failure.
Wow, what were your oil change intervals like?
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  #15  
Old 11-03-2012, 08:06 AM
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Quote:
Originally Posted by wingnutks View Post
I was having the same problem... oil pick up was clogged with sludge. When you romp on it the pump will out flow the pick up and oil pressure drops. Drop the pan and check it out asap.
I don't think it is a real oil pressure problem--hard acceleration doesn't cause any problems... Only starting, you start, then key off, restart and then the gauge reads. It does have oil pressure--engine makes no abnormal noises for example when the gauge reads zero. I'm going with a new sensor (kinda want to get the right one the first time...) since that is cheap and appears easy to do. Another reason why I don't think this is impeded oil flow is that the truck has done this since new... It is just that when new it happened once every few months (so that the dealer could/would do nothing since they could not reproduce it...) Then it was fine for about three years, and in the last year it has gotten much worse. Truck has 70K miles on it, a lot of local driving and a few trips, and oil changes every 6K miles. (I own a nice (personal, not commercial) shop so working on these is not hard...) +++ Update +++ Picked up the sender, and tossed it in. All considered not too bad, wish I had the correct wrench/socket but a 27 MM open end worked almost as well. And now, when I start up I have oil pressure! No more double starts for me.
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Last edited by NEHOG; 11-03-2012 at 01:35 PM.. Reason: Update with repair results...
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  #16  
Old 11-04-2012, 05:28 PM
gunbunny2bg4u gunbunny2bg4u is offline
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beware that the oil pump relief valve can stick open at times and cause a low oil pressure. my pt cruser did that too like your stating and had to replace the oil pump.
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  #17  
Old 11-05-2012, 08:10 AM
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Quote:
Originally Posted by gunbunny2bg4u View Post
beware that the oil pump relief valve can stick open at times and cause a low oil pressure. my pt cruser did that too like your stating and had to replace the oil pump.
Noted... I think mine is OK, and the new OPS is working just great. No more double starts for me now. But I suspect by next year I'll be dropping the pan anyway, as it is rather rusty and I think it will have to be replaced soon.
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Old 11-05-2012, 08:10 AM
 
 
 
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