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alex g
Dodge Dakota
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12/02/2004
11:11:37
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 Subject: 92 3.9 died
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I dont know where to start. I was driving to work this am and my 92 3.9 Dakota just died on the highway on me. It has not given me any indication of anything. It runs fine day in and day out. I was going about 70 and blahhh! It turns over and everything, just does not fire up. Im going to swap the coil out first. Any other suggestions???
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Woody
Dodge Dakota
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12/02/2004
12:25:07
|  RE: 92 3.9 died
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Is your check engine light coming on?
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Woody
Dodge Dakota
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12/02/2004
12:28:21
|  RE: 92 3.9 died
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What I meant to say was...is your check engine light coming on when you first turn on the key or turn the engine over? I had this problem.Let me know.
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alex g
Dodge Dakota
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12/02/2004
12:29:35
| RE: 92 3.9 died
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no, i just checked to see if there is fuel delivery and yes there is.
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alex g
Dodge Dakota
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12/02/2004
12:38:28
| RE: 92 3.9 died
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Message:
it comes on at first like usual, but then goes off whenI turn over.
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Woody
Dodge Dakota
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12/02/2004
12:39:36
| RE: 92 3.9 died
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You may want to ask Larry or "?" about this,so far they have been great with my problems,there are others too,I just cant think of their names.Good luck.
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byramcvff
Dodge Dakota
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12/02/2004
13:33:37
|  RE: 92 3.9 died
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Message:
try the dist. cap and rotor button
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Carl
Dodge Dakota
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12/02/2004
13:39:41
| RE: 92 3.9 died
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Happened to me once. Wiring had been routed too near the exhaust and it finally burnt through. I would check my wiring under the chassis.
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rick
Dodge Dakota
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12/02/2004
13:56:26
| RE: 92 3.9 died
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Message:
Crank Position Sensor
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Wadak
GenIII
12/02/2004
14:16:22
| RE: 92 3.9 died
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Message:
alex g
My son's truck did the very same thing about a year ago. After much troubleshooting and parts replacing we finally got it running, it turned out to be the crank position sensor.
Depending on how many miles you have on your truck:
1. Check fuel pressure at the schrader valve on the driver side fuel rail toward the firewall. The valve looks like the valve stem on a tire with a cap. Fuel pressure should be a minimum of 35 psi, I believe.
2. The fact that your truck just up and died would leave me to believe that the loss of crank position sensor or camshaft position sensor (fuel sync) input to the ECU could be the cause.
3. Perform the check for error codes, turn the key on, off, on, off and the on and check to see if the check engine light flashes 2 series of numbers, you will have to count the flashes, may be more than one code.
4. Another possibility could be a defective ignition coil, I would think that this would have given a check engine light.
5. One more possibility, inside the wire harness below the under-hood fues box about 8 to 10 inches down in the wiring harness is a connection where 4 or 5 wires are connected together. This connection can build up corrision that greenish in color, it can cause a loss of voltage to ignition and fuel system. You will have to untape connections to check for the corrision. Make sure battery connections are removed before checking this.
Good Luck with your truck and please report back what you find. If you don't have a manual a Chiltons or Haynes is a starting point.
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Bob Lincoln
Dodge Dakota
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12/02/2004
15:50:31
| RE: 92 3.9 died
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Very common for distributor shaft play to wipe out the pickup in the dist, causing engine to die with no warning and not restart.
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alex g
Dodge Dakota
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12/02/2004
23:47:13
|  RE: 92 3.9 died
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Alright guys, thanks for all the help. Turns out it was a very simple fix. I thought it was the coil, replace it. NADA!! OK, so I though. Why didnt I check the cap and rotor first??? Opened it and voila!! The damn rotor had self destructed!! Replace with new cap and rotor and runs way better than before.
I bought this truck a year ago and has been great. The cap and rotor looked brand new along with the wires, so I dint bother changing them. Looks like it was the original rotor!!
Oh well. Runs good.
Thanks
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