2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

idle loops

Thread Tools
 
Search this Thread
 
  #41  
Old 06-18-2018, 08:54 PM
Eman2004's Avatar
Eman2004
Eman2004 is offline
Amateur
Thread Starter
Join Date: Jun 2018
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Default We are getting somewhere

Ok, so the P1391 is gone thanks “Hey you” for sharing the shop manual, becuase I was able to trace out the circuit and find that the cam connector had a dead short from power to ground. However, the idle is still a little funny, so I’m hoping it didn’t fry the PCM. It will run for 5 to 10 minutes now with no codes, but sometimes it will stumble out. What do you guys think?




 
  #42  
Old 06-18-2018, 09:54 PM
2bit's Avatar
2bit
2bit is offline
Record Breaker
Join Date: Jul 2014
Location: Wisconsin
Posts: 1,362
Received 35 Likes on 34 Posts
Default

Disconnect the battery to reset the computer. See if it learns and adjusts after taking it for a ride.
 
  #43  
Old 06-21-2018, 08:51 PM
Eman2004's Avatar
Eman2004
Eman2004 is offline
Amateur
Thread Starter
Join Date: Jun 2018
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Default Crap

So, I drove it around today and the stupid light came back on (1391). I’m guessing the PCM got fired from the dead short to end on the power wire. Have you guys seen this before?
 
  #44  
Old 06-22-2018, 08:24 AM
HeyYou's Avatar
HeyYou
HeyYou is offline
Administrator
Dodge Forum Administrator
Join Date: Apr 2010
Location: Clayton MI
Posts: 80,768
Likes: 0
Received 3,178 Likes on 2,931 Posts
Default

Not really, but, anything is possible.
 
  #45  
Old 06-27-2018, 09:51 PM
Eman2004's Avatar
Eman2004
Eman2004 is offline
Amateur
Thread Starter
Join Date: Jun 2018
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Default I’m retarded

ok, so come to find out, there is a short on the power side of the harness. Becuase it goes through the map sensor as well, however I’m still confused as to why it grounds on the power side but whatever. So, back to square one again and I’ve read several forums of guys doing the same thing as me. They change the wires and plugs and the truck never runs right again. So, my question is, if the idle is looping can a fuel sync issue cause that problem? All of the videos I’ve seen of resetting a fuel sync issue the car is idleing smoothly. What say you?
 
  #46  
Old 06-27-2018, 10:34 PM
2bit's Avatar
2bit
2bit is offline
Record Breaker
Join Date: Jul 2014
Location: Wisconsin
Posts: 1,362
Received 35 Likes on 34 Posts
Default

http://www.tooldiscounter.com/ItemDi...iABEgJeTvD_BwE


I say you need to find the short. There's youtube videos you can watch.
 
  #47  
Old 06-27-2018, 10:45 PM
racefan41's Avatar
racefan41
racefan41 is offline
Captain
Join Date: Jan 2016
Location: Shawnee, KS
Posts: 593
Received 8 Likes on 8 Posts
Default

Did you ever find out how much slop was in the timing chain?
 
  #48  
Old 06-28-2018, 06:31 AM
Eman2004's Avatar
Eman2004
Eman2004 is offline
Amateur
Thread Starter
Join Date: Jun 2018
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Default

http://troubleshootmyvehicle.com/chrysler/3.9L-5.2L-5.9L/tps-wiring-diagram

According
to that page the Map should be unplugged, but if it is pluged in. Then I have a dead short to ground on the power wire, but the website says to unplug everything.

Also, no have haven't checked the slop on the chain, because I'm working by myself. However, I would imagine that I need to move the crank back and forth and see how much the distributor moves correct? I guess I could take a picture of the distributor
 
  #49  
Old 06-28-2018, 06:44 AM
Eman2004's Avatar
Eman2004
Eman2004 is offline
Amateur
Thread Starter
Join Date: Jun 2018
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Default

If this thing needs a timing chain, then I might put a junk yard motor in it. But, if that P1391 comes back I'll probably give it away (J/K) its my dads. Sucks, he needs his truck, but this thing is killing me.
 
  #50  
Old 06-28-2018, 11:22 AM
Eman2004's Avatar
Eman2004
Eman2004 is offline
Amateur
Thread Starter
Join Date: Jun 2018
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
Default

Do you guys know if the Fuel Sync will cause this problem?
 


Quick Reply: idle loops



All times are GMT -4. The time now is 11:05 PM.