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toolfan
GenIII
12/18/2005
16:54:31
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 Subject: oil pressure?
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my oil pressure will drop almost all the way down to probably 10psi and than build all the way to 60psi is this normal?
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daddio
Dodge Dakota
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12/18/2005
16:57:31
|  RE: oil pressure?
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i believe the FSM states 6psi min. and 35-65 @ 3K rpm. your's sounds ok but, check the oil level and if you're really concerned, put a mechanical gage on it to check for sure.
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mattleg
Dodge Dakota
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12/18/2005
17:08:11
| RE: oil pressure?
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My 5.9 runs at least 30 psi even at idle. It possible its the sending unit so as daddio suggested do a check using a mechanical one. If its low even with mechanical your pump is properly starting to wear out. Im gonna replace mine with a high volume one pretty soon. Oil pumps are cheap and oh so very important, I dont know why people dont replace them more often.
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toolfan
GenIII
12/18/2005
18:56:32
|  RE: oil pressure?
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thanks guys and the sending unit does need to be replaced. i was just wondering because it would go up and down so much. how hard is it to put in a mechanical one? if i every drop the belly pan than i will replace the oil pump. :) thanks
ps i check the oil 3 times a month and she only eats a qt between oil changes. with 153k miles.
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The Purple 1
DakotaEnthusiast
12/20/2005
00:30:30
| RE: oil pressure?
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Message:
It would probably not be too difficult to add a mechanical oil pressure gauge, but whatever you do, you should keep the stock sending unit in that place also (it's okay to use a T-fitting with pressure gauges if there's room) because the ECM probably uses it to determine if the engine is cranking (or running) so it will energize the fuel pump...
Also, be careful where and how you route the tubing through the firewall to the gauge-- wouldn't want oil spraying everywhere! For that reason alone, you might want to go with an electric one instead...
Just my .02 $$!
360 Air Intakez, 52 MM Holley Billet, Ported, Hughes Plenum Plate, Perma Cool Fan, Jacobs Pro Street, Moroso Ultra 40, Bosch 4, Superchips, TPS, CPS, IAT Mods, Dynomax Ultra Flo, Transgo, SLT Trim, Diamond Heads & Corners, Clear Tails, Hood Pins, APC White Gauge, PML Polished Trans & Diff Covers
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toolfan
GenIII
12/20/2005
01:06:19
| RE: oil pressure?
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thanks for the advice TP1! it just depends on who the oil is spraying on. hehe
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OBIO3
Dodge Dakota
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12/20/2005
01:49:52
| RE: oil pressure?
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Mattleg > Really is your choice to install a high volumn pump but I'm not seeing the reason why > If you do the book work you'll find out there real purpose is for race loose engines > There not ment to give higher pressure < Just to be sure you have enough volumn And that's what it's called > HIGH VOLUMN PUMP > If you really feel the need DO NOT but a stronger relief spring in it > Your playing with dynamit far as your main seals are concerned >
So many problems > So little time
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Dan M
Dodge Dakota
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12/20/2005
07:56:51
| RE: oil pressure?
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Message:
a quart between changes? That is quite a bit. Have you tried to track down the leak?
And you can test the guage on the dash from the sending unit using a jumper wire. I have posted instructions before on how to do this.
- Dan M
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