hey whats up? new to the forum and ive gotten some good info so hear i am trying to see if anyone could help me out. i have 1998 dodge ram 2500 v10 gas truck and i am having problems with the pcm regulating power but i dont think its the pcm because all my gauges work and my truck starts right up and drives fine other than its in limp mode. the problem started when i was changing the alternater and i hit the two leads in the back with a soket...figures i can hit that but not the lottery but anyway i seen a spark so i know i shorted out something. i checked all fuses in the truck and under the hood and thats as far as i can go so if anyone could help i would greatly appreciate it...thanks!

 

You could try dis-connecting the batt neg side this will reset the pcm. Other than that a new pcm is in order as it controls the voltage.

 

ya ive done that and had no luck. so even with all the gauges working and the truck starting u think its a bad pcm? someone told me to check the 5v power supply for the pcm but i dont know what harness or number to check, u wouldnt happen to know the lay out for the pcm harness numbers?

 

Sorry no I don't. Not sure if it will help you as your year truck is not listed but the FSM's the 97 and 2001 can be Dl from here.

https://dodgeforum.com/forum/2nd-gen...e-manuals.html

 

hey thanks for the tip, i just hope i can find the problem...going on a month, i should just bite the bullet and buy a pcm...just so much money if its not the case. but u live and u learn...thanks again for your help!!

 

Not a problem hope it helped somewhat. Using a DVM what's showing at the batt (volts) with the truck running?

 

ya the 2001 works, it even had my 8.0 v10 engine. looks like ill be doing some testing with my meter tomorrow, ill keep u posted and let u know how i make out but i have a feeling its the pcm regulater...so it sounds like a new pcm

 

I was just out looking for a Mopar performance pcm for you, but alas no such animal for your year truck

 

what would a performance pcm do over ride the pcm somehow?

 

No it's a complete replacement pcm made by Mopar, I found them for a 94-95 V10 truck and a newer srt10 truck but not for your year truck.

Have a look about 3/4 of the way down the page. http://www.mopartsracing.com/parts/ram.html