DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Help Zone - Dodge Ram Problems, Complaints, & Solutions - Maintenance & Re > 1ST Generation Dodge Ram 1993 & Older Dodge Ram Trucks > Electrical


Notices

Electrical 1st Gen Dodge Ram Electrical Problems and Questions.


Latest Vendor News
AutoAnything
Addictive Desert Designs!
United Radio
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 08-03-2013, 12:52 AM
GEN1's Avatar
GEN1 GEN1 is offline
Dodge Ram Forum Newcomer
 
Join Date: Aug 2013
Location: New Mexico
Posts: 16
Gender: Male
Vehicle: 1993 Dodge W350 Dually Flatbed
Color: many, camo, black, red,
Engine: 1989-1993 360ci (5.9L) Cummins diesel I6 160hp 400lb/ft
Rep Power: 0
Rep:10
GEN1 is on a distinguished road
Default 93 ram RPM/Voltage issues

Has anyone ever seen the issue of the rpm guage dropping dwn to 0, and at the same time the battery voltage starts to drop also, as soon as the RPM guage starts "marking" the voltage starts to go back to normal? Any help will be greatly appriciated.
Reply With Quote
Sponsored links
  #2  
Old 08-03-2013, 03:13 PM
crazzywolfie crazzywolfie is offline
Dodge Ram Forum Senior Member!
 
Join Date: Feb 2013
Location: Orangeville, Ontario
Posts: 244
Gender: Male
Vehicle: 81 91 93 dodge
Rep Power: 0
Rep:11
crazzywolfie is on a distinguished road
Default

it almost sounds like your loosing power to the gauges. never heard of something like this.
__________________
91 & 81 d150 carburated 318's 93 R.C. F.I.318
Reply With Quote
  #3  
Old 08-04-2013, 12:56 PM
GEN1's Avatar
GEN1 GEN1 is offline
Dodge Ram Forum Newcomer
 
Join Date: Aug 2013
Location: New Mexico
Posts: 16
Gender: Male
Vehicle: 1993 Dodge W350 Dually Flatbed
Color: many, camo, black, red,
Engine: 1989-1993 360ci (5.9L) Cummins diesel I6 160hp 400lb/ft
Rep Power: 0
Rep:10
GEN1 is on a distinguished road
Default

Yeah, I know it sound weird, but it happens every time consistently, the rps drop to 0, and then the voltage starts to drop. sometimes for 10 seconds, sometimes up to 20 mins. doesn't matter if it is sitting idle or doing 60 down the road. I spent some time yesterday looking for a loose connection, didn't find any. Is it possible the crank sensor is going bad, I'm assuming that is where the rpm's are being measured. Here is the pic of the sensor http://www.oreillyauto.com/site/c/de...d=crank+sensor Although I still don't see how it would affect the voltage the way it does, any info would be helpful.
Reply With Quote
  #4  
Old 08-19-2013, 11:07 AM
GEN1's Avatar
GEN1 GEN1 is offline
Dodge Ram Forum Newcomer
 
Join Date: Aug 2013
Location: New Mexico
Posts: 16
Gender: Male
Vehicle: 1993 Dodge W350 Dually Flatbed
Color: many, camo, black, red,
Engine: 1989-1993 360ci (5.9L) Cummins diesel I6 160hp 400lb/ft
Rep Power: 0
Rep:10
GEN1 is on a distinguished road
Default

Update: I solved the issue, turns out that the alternator was "going" bad, had it tested, and was "good", but just barely making the mark to be good, fortunately the tech was paying attention to the numbers, and said it would go bad in a short amount of time, and since it was still under warranty he went ahead and replaced it, upon verifying my information for the vehicle, he noticed that the alternator the truck called for was not the one I had in the truck. the one I had in the truck was for a gas engine, not the diesel, which was a little aggravating, since "they" were the ones who gave me that alternator less that a year ago. Anyway, the diesel one needs the 120 amp, the gas I believe is only about 80/90 amp. So, in theory the alternator could not keep up with the demand and would ultimately "give out" and cause the RPM gauge to drop and the voltage also to drop, since it was not putting out anything, and the truck was just running off the battery at that point. I installed the correct alternator, at first, the rps were still at 0, and voltage low, I then adjusted the gap on the speed sensor (which I had replaced with a new one thinking it was the issue) and the rpm's read normal and the voltage jumped up to normal. From what I understand, the voltage is regulated by the pcm/ecm, which uses the engine speed sensor to verify the engine is running, which in turn tells the alternator to put out more volts?, In my case, the ess was good, but the alternator seems to have shorted a diode and was no longer putting out any voltage.
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Advertisement






All times are GMT -4. The time now is 08:04 PM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum