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Discussion Starter #1
Hello,

Sorry this is going to be long but I think you need all the info to lend a hand, I have a 90 dodge Dakota that will start and run fine for 20 mins and the ASD relay shuts it down. If I wait 2 hours it starts up like nothing is wrong and runs for 20 mins no longer. I am getting fuel just no spark. I have disconnected the battery to clear the computer and still wont start till it has been 2 hours. Now here is what I have done thus far:

Replaced Coil
Replaced entire distributor, plus cap rotor and wires
Replaces both temp sensor and sending units
Replaced oil sending unit
Replaced computer
Replaced relays
Replaced fuel pump
There is no crank sensor
Replaced timing chain and gears

The only codes I have ever gotten are 11, 12, and 55

The truck just started doing this out of the blue and this is everything I have done to correct the issue and nothing has changed,
Any ideas would be greatly appreciated
 

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Welcome to Allpar!

If this is a 1990 Dodge Dakota with V-6 or V-8, there IS a crankshaft position sensor. It's at the bellhousing on the passenger top side. Which engine is this?

Are you still getting these codes, or are they just historical?
 

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Since the 1990 is still TBI, I'm not sure it has a crank sensor. I don't see one on my 1989 3.9 v6 (though it can be well hidden, I know).
 

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Discussion Starter #4
Bob Lincoln said:
Welcome to Allpar!

If this is a 1990 Dodge Dakota with V-6 or V-8, there IS a crankshaft position sensor. It's at the bellhousing on the passenger top side. Which engine is this?

Are you still getting these codes, or are they just historical?
Thanks,

This is a V6 3.9 and i have looked all around the bellhousing for a crank sensor and find no sign of it .i read some other threads and fornd that some with TBI have no crank sensor is that incorrect. just went and looked again and no sensor or even a hole where one would go. only codes now are 12, and 55
 

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Ah, OK, you're right, it was 1992 when they went multi-port fuel injection that they introduced the crank sensor, and the distributor pickup controls only the fuel injector synchronization.

Could be the infamous splice from the battery to the relay box. If you remove the relay box from the fenderwell and dig into the wiring bundle, there is a splice that was poorly done at the factory and often corrodes, causing intermittent operation or loss of power. I lost power to the starter relay on my truck due to this. Could be that when it gets hot it expands just enough to break contact. Solution is to solder it, or use a bunch of new crimps.
 
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