1994 Dodge Dakota 1994 Dakota WILL NOT start

Tiny
MUSHR00M
  • MEMBER
  • 1994 DODGE DAKOTA
  • V8
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
It turns over, but merely bogs out. Will not start.

I've changed plugs/wires/cap/rotor/coil/fuel pump.

I'm getting a spark. And there is plenty of fuel pressure at the pressure release valve (fuel rails).

I've read about a wire harness corroding near the computer. Could this be my problem? Or possibly the crank positioning sensor?
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Saturday, December 20th, 2008 AT 2:08 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
If you are getting spark and fuel, the wiring should be fine. Did you check for trouble codes? It could ba a bad map sensor, but I don't want you buying parts you don't need. You can check for codes yourself without tools by cycling the ignition switch from of to on 3 times and letting it in the fun position the 3rd time. The engine light should begin to flask. Keep track of the number of flashes and let me know what you get.

Let me know.
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Saturday, December 20th, 2008 AT 2:18 PM
Tiny
MUSHR00M
  • MEMBER
I've checked for codes using your tactics. The codes that came up were 12 and 55.12 being 'battery has been disconnected within last 50 startups' and 55 would be 'end of fault codes'.

I replaced the battery (it needed it) same with fuel pump.

Confusing thing about all of this. It would start before the tune up. Now it doesnt. And I can't figure it out!
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Saturday, December 20th, 2008 AT 2:23 PM
Tiny
MUSHR00M
  • MEMBER
(it started before the tune up. But it didnt run very well. Loss of power. Which provoked me giving it a tune up)
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Saturday, December 20th, 2008 AT 2:25 PM
Tiny
MUSHR00M
  • MEMBER
I am seriously at a loss. Any other options?
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Saturday, December 20th, 2008 AT 2:43 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
By chance, did you accidentaly unplug any sensors? Being it sounds like you've worked around cars a good bit, I realize you most likely checked this, but I need to ask. Also, you didn't say if you're getting both fuel and spark. Did you check? Finally, I have a 92 that was doing some similar things. After going crazy with no codes, I found that the MAP sensor would have correct output voltage and then drop to nothing for a split second, killing the engine and happening so fast, it wouldn't set a code. I had to borrow a buddy's on board scanner so I could run and drive the truck to see what was happening to cause it to die. I replaced it over a year ago and had no problems since. Also, if you remove the distributor cap, the rotor is turning, correct?

Joe
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Saturday, December 20th, 2008 AT 8:24 PM

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