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jramirez
Dodge Dakota
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11/10/2005
20:49:22
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 Subject: Oil gage
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My 2000 dakota oil gage is showing 3/4's of the indicated pressure. It won't move or flucuate with engine speed. Any suggestions?
Johnny
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.boB
Dodge Dakota
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11/11/2005
00:25:37
| RE: Oil gage
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It should be higher when cold, lower when hot. If it doesn't change, then the sensor is probably bad.
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Jecht
Dodge Dakota
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11/11/2005
09:04:29
| RE: Oil gage
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I wouldnt say that. my 03 the guage stays in the middle. cold or hot. I heard that dodge changed that because people kept comming in saying their guage was fluctuating up and down. but if the guage needle is at the 3/4 mark all the time. I would ask what oil and filter your using in it.
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last_username
Dodge Dakota
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11/11/2005
12:58:48
| RE: Oil gage
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Your oil pressure always fluctuates!!!
you are not making 60 psi at idle. At idle it will be around 6 psi. Therefore, based on rpm, you pressure will vary.
Only difference is if you have a dry sump oil pump/prelubricator system.
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Jecht
Dodge Dakota
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11/11/2005
14:45:35
| RE: Oil gage
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well at idle or doing 65 it still runs half way.
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OBIO3
Dodge Dakota
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11/12/2005
22:00:59
| RE: Oil gage
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6 pounds is a mimimun not an average > Mine idles 40 and runs 65 at anything over that > This is checking it with a good mechanical guage > I have never trusted electrical senders or guages > Mobil 1 syn 10-30 amd mobil 1 best filter > Pricy but cheap insurance >
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ewraven
Dodge Dakota
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11/14/2005
21:14:48
| RE: Oil gage
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Message:
From what I gathered from another thread here. On the 2000 and up Dakotas, the oil pressure gauge went from a regular gauge to more of a switch or a warning light.
In my 1999 model, the pressure according to the gauge varies with engine speed like others have mentioned in this thread. With the 2000+ trucks, the gauge shows either that you have pressure or that you don't. There is no in-between.
Hopefully someone will post up with the accurate info though. I don't remember which thread this was in.
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DakAttack
Dodge Dakota
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11/14/2005
21:19:26
| RE: Oil gage
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I have a 00 Dak at My guage jumps to the higher side of normal when I speed up. and when I slow down in traffic it flys down to the lower left side of normal. In lots of traffic all I see is left and right and left and right. SHould I be worried??
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Josh
Dodge Dakota
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11/19/2005
01:46:36
| RE: Oil gage
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Message:
Quoting the 2004 FSM:
"The PCM continually monitors the engine oil pressure sensor to determine the engine oil pressure. The PCM then sends the proper engine oil pressure messages to the instrument cluster."
"The instrument cluster circuitry restricts the oil pressure gauge needle operation in order to provide readings that are consistent with customer expectations."
"Each time the cluster receives a message from the PCM indicating the engine oil pressure is between about 6.9 kPa (1 psi) and 137.9 kPa (20 psi), the cluster holds the gauge needle at a point about 11 degrees above the low end of normal increment on the gauge scale."
"Each time the cluster receives a message from the PCM indicating the engine oil pressure is between about 517.1 kPa (75 psi) and 755 kPa (109.5 psi), the cluster holds the gauge needle at a point about 7.4 degrees below the high end of normal increment on the gauge scale."
"When the cluster receives messages from the PCM indicating the engine oil pressure is between about 137.9 kPa (20 psi) and 517.1 kPa (75 psi), the gauge needle is moved to the actual relative pressure position on the gauge scale."
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OBIO3
Dodge Dakota
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11/19/2005
15:59:33
| RE: Oil gage
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Josh > With all due respect I'm wondering where you got this information from > I had a shop all my life and one thing I know for sure > At 100 plus pounds of oil preasure , in a short time on a new engine you start pushing oil through the maim bearing crank seals > this is the exact reason an oil pump contains a relief valve and one of the reason for a safety valve in the oil filter > If there has been some sort of design feature I'm not aware of I would truely like to read up on it
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Josh
Dodge Dakota
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11/19/2005
20:57:05
| RE: Oil gage
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Message:
Those five paragraphs were, as indicated the first line of my post, taken verbatim from my 2004 Dodge Dakota Factory Service Manual (FSM). That's why there's quotes around them.
It's a CD version FSM, so I just copy and paste this stuff. There are several others contributors to this forum who do the same.
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OBIO3
Dodge Dakota
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11/20/2005
13:52:54
| RE: Oil gage
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Wow JOSH > That's truely interesting to know > I'm going to do some reserch to determine what dodge did to protect the crank seals > Also with that information and now knowing the preasures these engins are producing there is absolutely no way I would even consider using a cheap oil filter with a thin case > That could end up being a very costly situation
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Stu Baker
Dodge Dakota
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11/21/2005
09:20:24
| RE: Oil gage
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2000 4.7 QC, with a new remanufactured motor. Gauge shows about 40psi. When I slowed down to 1000 RPM or lower the "check gauge" light would come on and the gauge would drop down to "0". Then as I accelerated it would go back to 40+ PSI. This would fluxuate. This same situation happened back in Feb. 2005 and my 4.7 blew a rod. I just got the new motor in last Saturday 12th. and have no more than 300 miles on it and the gauge is doing the same thing again. What the f$^^ is going on here???????
ds
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Stu Baker
Dodge Dakota
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11/21/2005
12:29:29
| RE: Oil gage
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I guess what I'm wondering is, is the oil sending unit reading NO pressure in the engine or is the sending unit wacked out?? Don't forget though, this same thing happened back in Feb. and I was in town then on the hiway and the gauge still fluctuated until a rod went. I thought at that time the gauge was wacked so I ended up driving into work(never made it though). Now how could this be happening again with a new motor?
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OBIO3
Dodge Dakota
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11/22/2005
16:10:36
| RE: Oil gage
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I don't have an answer but I do know I would take it back to the installer pronto > If you ordered and installed then contact the remanufacturer at once > If they say drivw it , get it in very clear writing >
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Stu Baker
Dodge Dakota
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12/06/2005
07:05:17
| RE: Oil gage
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I put a mech. gauge in and everything is fine. The dealer also told me that at curb idle, you should be running 4 psi minimum. With vehicle warmed (meaning, thermostat opened) you should be running 25-80 psi. Again, this is what I'm getting with the mech. gauge: when she's cold it's up around 75-80 psi. Once warmed it's around 30-35 psi. As I accelerate it goes to around 55-60 (holding around 2000 rpm's)psi and back down to 30-35 when I'm stopped. So, basically, my sending unit was a toilet. The stock gauge should move somewhat. This info I got from the DODGE dealership and is for a 2000 Dak. 4.7 just so you know. Hope this helps somebody....it did me.
stu
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