Question about Chrysler Cars & Trucks
1997 dodge Dakota 3.9 keeps giving code p1391 and running bad what could be wrong?
You may need a shop manual for this one.
Code 1391 means the crank sensor or cam sensor signal is not steady or dead at times.
The distributor acts as the cam sensor, so it could be that or the crank sensor, or a problem with the wiring harness.
Posted on Feb 18, 2014
35 says idle switch motor, 41 alternator field circuit open or shorted.
For all the time it takes, I would remove idle air control motor, on side of throttle body, clean it all up, and spray good in port you remove it from , with throttle body cleaner, and retry it, and see if it makes any difference.Inspect & Spray connections with contact cleaner too.
Posted on Jan 23, 2009
SOURCE: 2001 Dodge Dakota- Electrical
As crazy as this sounds, I think it was actually a bad battery to begin with and then a bad replacement battery. I replaced the original battery (originally the high amp option) with one from NAPA with a higher amp rating (matched to truck with their computer). The problem returned (as I said previously). I finally got frustrated enough and figured I would try another battery. I bought a Die Hard from Sears. I did a top off trickle charge and then installed it. I have not had the problem since... it's been 3 months and the truck has been great... no problems.
Posted on Apr 01, 2009
I had same problem with 99 Durango.
It was an easy and cheap fix -- I went to AutoBeef.com and learned common problem with 98 & 99 Durango -- sounds exactly like your problem. I was encouraged to replace the PCM "Brain" and was advised of an online Refurbished PCM dealer located in Florida. You can google as I forgot the name. I called them and they confirmed an easy fix w only 3 screws to change out the brain. The cost was < $300.00 and my son & bro changed it out. Runs great ever since -- I was so grateful for AutoBeef.com for delievering this information to me. My car would die on me without warning -- totally unreliable and dealer and mechanics had no clue. Your problem sounds like mine -- call the PCM reburbishing company and see what they think.
Posted on Apr 08, 2009
Sounds like your IAC motor is getting stopped up. Clean out the passage, and the throttle body. If that doesn't work, get a new IAC motor.
Posted on Jul 25, 2009
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