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cuyaxdakota
Dodge Dakota
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10/21/2003
21:59:51

Subject: RE: OIL PRESSURE
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Thanks for the heads up. I use synthetic and normally go kinda long on my oil use, but now I think I will reconsider. The cost of oil easily is better than the price of another engine. $1500 was what I spent all in all...



97-Dakota
Dodge Dakota
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10/23/2003
21:43:39

RE: OIL PRESSURE
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Is this too low?

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This is at hot idle... when the engine is going ~1500-2000rpm it's just a shade above dead center (40psi)

When it's cold it's 40psi @ idle and about 3/4 of the way up @ 2000rpm...

BTW, this is directly after an oil change...

I've heard people talk about dropping the oil pan to clean to pump intake and changing the pressure sender... How tough is it to drop the pan? How about the sensor?

I do my most of own work (except in the winter!!) but I haven't look under the hood on this much (just got it yesterday)



Ken Anderson
Dodge Dakota
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10/24/2003
18:43:30

RE: OIL PRESSURE
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How do you go about removing the oil pan from a 99 Dakota 5.2, 2-wheel drive truck?
Ive heard you have to actually disconnect the motor mounts and jack the engine up to clear the crossmember, is this correct?
What Id really appreciate is some advice from the folks that have actually done this in the past.
Im looking at possibly pulling my oil pan off to check for the dreaded pickup tube clog and clean out my pan.
would be nice if someone in the aftermarket world would devise a better pan for our trucks that would actually let the contaminants drain from the pan during oil changes so we can enjoy our trucks without worring about the oil systems getting clogged up.
Any help with easy pan removal/installation wouold be greatly appreciated!

Thanks
ANDE



Ken Anderson
Dodge Dakota
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10/25/2003
10:00:29

RE: OIL PRESSURE
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BUMP



BrianC
Dodge Dakota
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10/25/2003
15:31:49

RE: OIL PRESSURE
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Yes you will have to jack up the engine off of the motor mounts ..... i did it once and it was a pain in the ass ...... i guess there is a part of the pan on the inside the pan that the pickup tube fits into...... i had to jack up the engine till the distributor was hittng the firewall and still fight with it to get it off......



cuyaxdakota
Dodge Dakota
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10/26/2003
22:27:30

RE: OIL PRESSURE
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The sensor is near the distributor.



Beuteske
Dodge Dakota
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10/27/2003
20:36:07

RE: OIL PRESSURE
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I didn't want to lift the engine, so I dropped the front differential. The half shafts come loose from the center section with just six bolts on each of the flanges, and the front drive shaft can be disconnected at the U-joint. The front axle vent tube has to be unsnapped from the inner fender, and then about twelve bolts need to be removed from the axle housing. Three of these are on top, and one of these became optional upon reassembly due to the poor access. Once the center section is down, the axle brackets have to be removed, and the pan can be dropped straight down. The pickup hangs up a little on the baffle in the pan, and removing the dipstick first helps a lot. At this point you can scrape the goop out of the pan and clean out the pickup screen before putting the whole thing back together. It took me three nights to do the whole thing, but it beats paying someone else to do it. The most difficult part was raising the axle housing back into position. The stock pan gasket is a molded one-piece unit, but mine was cooked and came off in pieces. Plan on buying a new one. Good luck.



Beuteske
Dodge Dakota
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10/27/2003
22:37:28

RE: OIL PRESSURE
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I knew I would forget something. The drag link also has to be taken loose to get the oil pan off the engine block. In my case, the idler arm needed to be replaced anyway, so I took that side loose. The Pitman arm side of the drag link does not need to be disconnected.



Gilberttribe
Dodge Dakota
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11/03/2003
19:34:16

RE: OIL PRESSURE
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I find it extremely unlikely that synthetic oil changes not done every 3000 miles were the cause of the engine failure. If this were the case, dino oils would have to be changed well before 3000 miles, especially if the problem is heat related. For some excellent non-biased information on motor oils, go to

http://www.bobistheoilguy.com/

There are hundreds of used motor analysis reports in the forum section from a wide variety of vehicles and oils.



tommy
Dodge Dakota
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1/02/2005
17:12:56

RE: OIL PRESSURE
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I have a 1997 5.2 4x4 dakota it has 120000 miles on it.I normally change oil every 2500 miles so is there any reason for the oil pressure to just drop all of the sudden to nothing. For a while it would hold at about 20 pounds when cold but when the engine warmed it would drop to zero unless i held it at about 2500 rpm but it would still never get higer then 20psi. I'm now replacing the engine with a new one.Another question how common are dakotas with 5 speed v8's



cuyaxdakota
Dodge Dakota
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1/02/2005
22:22:37

RE: OIL PRESSURE
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There is a flaw in the design of the oil pan on this truck. The oil pump is located near the back of the pan down in a pocket that cannot be drained via the normal drain plug. Most likely the oil pump is getting plugged from all the sludge left in that area.

One idea I thought about was creating a secondary drain in that area so that one could spray off the screens and remove the sludge therefore extending the lifetime of the oil pump.

First I would replace the sensor, however. Just don't rely on that being the only thing wrong.

Read through this thread and you will find a common friend in this issue.



fingers
Dodge Dakota
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8/27/2005
23:39:39

RE: OIL PRESSURE
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I have a mind boggler, my 94 ram 1500 with the 5.2. All new rod and main beaarings new sending unit new oil pump and this is how it goes. At cold idle it runs rough with 40 psi oil pressure and maintains that through rpm range. When warm at idle oil is at about 35 psi but when you hit 2500 rpm's it drops to zero. Acasionally it wont recover, shut the engine off fire it back up and pressure is fine. Oh and I forgot when first started it takes a good 20 seconds to show oil pressure. Does the dodge oil pump have a pressure relief valve like GM, I don't remeber seeing one when I put the pump in.



Red 99 Dak RT
Dodge Dakota
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8/28/2005
10:16:47

RE: OIL PRESSURE
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I think what I would do is get an actual Oil Pressure gauge and mount it with the oil sending unit and compare the two. With my '99 I'm finding some bad contacts, the Radio connections, the connectors in the doors, and I have one presently in my CCD that I'm trying to locate.



New Ram Head
Dodge Dakota
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6/20/2006
09:07:01

RE: OIL PRESSURE
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I purchased a 96 Ram from my sister, who purchased it for my nephew. I got a great price and it was a good running truck.
It needed some maintenance so I took it in like a stray dog.
There was so much sludge in the oil pan that when I pulled the dipstick, it had gunk all over the end.
I drained the oil, filled the pan with about 5 qts of diesel fuel. (Diesel fuel breaks down sludge like gasoline, but does not turn your engine into a bomb.)
Ran the truck for about 2-3 minutes, and drained the diesel fuel and what was left of the oil out and filled with 5w20 oil --very thin. I ran that for about 10-15 minutes at idle to let it circulate well and then drained and refilled with 10w30.

I've since replaced the Pressure sending unit because I was driving and the pressure dropped to zero. I thought my pump had failed. turns out the sending unit was gunked up and once replaced, pressure registered like a charm, even reacted quicker at startup.

I removed the oil pan -- not hard to do on a Ram.
Remove the motor mounts and drop the pan -- no engine raising/lowering required as the book suggest.

Cleaned out the gunky pump pickup screen, cleaned the pump but did not disassemble it, just flushed it out with gas and then blew it out with 50psi air hose. checked that it turned easy and reinstalled everything.

Started her up and haven't had oil pressure since.
Something got into the pump and locked it up for a split second and broke the shaft that turns the pump.
I am now waiting on parts to replace the oil pump drive shaft, which is located under the distributor, located under the dash. So, this will be fun to replace.



cuyaxdakota
Dodge Dakota
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6/20/2006
22:23:13

RE: OIL PRESSURE
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Sounds like you got lucky.

Is the shape of the oil pan on the RAM such that it has an area that collects old oil that never makes it to the drain plug? That is where the oil pump is on the Dakota.

I have since gotten rid of that piece of crap. Have not had good luck with a Dodge/Chrysler product yet. Mostly transmission issues in the following:

1998 Plymouth Voyager
1991 Chrysler New Yorker Fifth Avenue
1997 Dodge Dakota

Maybe someday I will try risking it on one of the new R/T Chargers



fseventy
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6/30/2006
13:12:27

RE: OIL PRESSURE
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If you're changing you oil regulary and still getting sludge in the pan/low oil pressure/clogged pick up screen you need to take a look at your plenum pan gasket reguardless of the miles on your truck. The plenum gasket at the bottom of the keg (intake) is notorius for leaking and it allows oil into the intake charge and fuel into the crankcase. Fuel in the crankcase makes for lots of sludge.

(With engine off!)Check by removing the intake hat, open the butterflies on the TB and look down into the intake with a flashlight. If you see streams of oil, it's probably your plenum gasket leaking. If you see an oil film on the other hand, it might the the plenum gasket, or PVC valve is bad, poor ring seal, etc...

Pull the oil pan, clean up the gunk, clean\replace the pickup tube, replace the oil pump, and you might want to pull a main bearing cap to check for wear. You might even want to pull a valve cover to see how much sludge is building up. And of course, get the plenum gasket replaced. If you've got lots of sludge buildup, good luck, because I'm not sure how your going to get it out with out a teardown and rebuild. I tired motor flush, SeaFoam, etc... and eventually I had to replace the motor due to a spun bearing and two collapsed lifters from oil starvation.



shatto
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7/08/2006
16:17:18

RE: OIL PRESSURE
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Were these problems with new vehicles?
What lubricants did you use?



Ray
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5/28/2007
18:13:56

RE: OIL PRESSURE
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Have a 91 Dakota 4X4 V6 with intermittent oil pressure at the dash gauge. Where exactly is the oil pressure sending unit? Been underneath and on top and it isn't the easiest piece to find. Thanks!



daddio
Dodge Dakota
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5/28/2007
18:36:54

RE: OIL PRESSURE
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back of the block, next to the distributor.



moe
Dodge Dakota
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5/28/2007
19:58:45

RE: OIL PRESSURE
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"Fuel in the crankcase makes for lots of sludge"

no actually it makes for thinner oil

water or moisture in the oil makes sludge



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