| From | Message |
Dan M
Dodge Dakota
JOIN HERE
9/14/2005
20:43:53
|
 Subject: truck died, low oil light comes on
IP: Logged
Message:
today while sitting at a red light, my 95 auto 4x4 3.9L just died and at the same time (not sure which happened first) the low oil light comes on. I shift into park, crank truck right back up, low oil light goes off. This is the 2nd time this has happened in the last 3 weeks. The first time, I was shifting from drive to reverse to back into a parking space.
I checked the oil today and it's above the add line.
Any thoughts on this? Is this the oil pump starting to fail?
- Dan M
|
Sneezer
Dodge Dakota
JOIN HERE
9/14/2005
21:02:47
| RE: truck died, low oil light comes on
IP: Logged
Message:
Oil pickup in the pan could be partially clogged. Will impede flow, especially under braking. My 92 318 used to do the same thing.
|
GraphiteDak
GenIII
9/14/2005
22:09:31
| RE: truck died, low oil light comes on
IP: Logged
Message:
I think there is NOTHING wrong with your oil pressure.
Something is wrong causing your truck to stall. With the ignition still on and your engine stalled, you have ZERO oil pressure. Therefore the light will come on.
Check the simple things first.
Tune up. Spark Plugs, etc.
IAC sticking? If the IAC sticks closed, it may not idle when you let off the gas, etc.
Hall effect sensors (Crank/Distributor), etc.
How's your oil pressure when it IS running?
If it's ok, bet you just have some other issue.
|
Craig
Dodge Dakota
JOIN HERE
9/14/2005
22:11:08
| RE: truck died, low oil light comes on
IP: Logged
Message:
I vaguely remember a customer having a Ram van 3.9. It consistently kept the oil light on. I don't remember what we did to fix it, but I'll ask my dad if he can remember.
Actually it's kind of funny because I'm not sure that we did fix that truck. I think the poor old lady that owned it passed away before her appointment.
|
College_dak
Dodge Dakota
JOIN HERE
9/15/2005
01:19:38
| Now, i'm not sure
IP: Logged
Message:
but if your dak is losing oil pressure, it might indeed stall your truck out on purpose. As a protective measurement, it could just be a bad sending unit?
|
Dan M
Dodge Dakota
JOIN HERE
9/15/2005
06:28:40
| RE: truck died, low oil light comes on
IP: Logged
Message:
I have noticed in the morning (i leave home around 4:15 am) that the pressure is consistanly half-way. My guage has no PSI, only low and high. In the afternoons (leave work around 2-2:30 pm) it tends to fluctuate a little, sometimes a little low, sometimes a little high.
I don't believe the pickup is clogged. I had the engine flush service done november of last year and I run seafoam every oil change. I check the oil and filter when I do a change and have not found any chucks of sludge, etc. I run mobile 1 synthetic and purolator filter.
It has new (winter) plugs and wires. The IAT is not sticking, it idle smooth with no fluctuations.
It could be the sending unit.
- Dan M
|
Dan M
Dodge Dakota
JOIN HERE
9/15/2005
06:38:38
| RE: truck died, low oil light comes on
IP: Logged
Message:
I just checked alldatadiy and found out how to test the sending unit.
disconnect it, turn engine to on position. guage should read low. Jumper pin 1 (tab up, looking into pins, it's the one on left) to ground , guage should move to high.
It said if the above happens, to replace the unit. I think they mean if it does not happen, replace the unit.
- Dan M
|
Dan M
Dodge Dakota
JOIN HERE
9/15/2005
06:42:30
| RE: truck died, low oil light comes on
IP: Logged
Message:
I'm an idiot. I'm testing the wiring and guage inside cab, not unit it self. If testing is good, then replace unit.
- Dan M
|
GraphiteDak
GenIII
9/16/2005
01:30:29
| RE: truck died, low oil light comes on
IP: Logged
Message:
Well if your gauge doesn't read zero until AFTER the engine dies. Then that is normal. Your low press light WOULD come on when the engine stalls. Because you would have no oil pressure.
On vehicles with no tach, that was always the surest way to know your engine stalled (if you couldn't hear it/feel it) by the oil light coming on.
I've HEARD that some PCM's would turn off the fuel pump if there wasn't oil pressure.
So it COULD be either way.
-low oil pressure, PCM turning off fuel (if it even does that)
-engine stalling from something OTHER than oil pressure and THEN the light coming on after the engine stalls and you go to zero oil pressure.
You may have to pay closer atention and see in what order it appears to happen.
Bad thing is, a gauge is slow to respond.
|
Dan M
Dodge Dakota
JOIN HERE
9/19/2005
03:53:59
| RE: truck died, low oil light comes on
IP: Logged
Message:
graphitedak, I think you are right. Occassionally on sunday the truck would idle erratically, hesitate on acceleration and backfire through the exhaust. I'll check the cap and rotor tonight. I have a new O2 sensor that I installed last fall as well as new plugs and wires.
- Dan M
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
