Check the main fuse on the PDC first (the first one like a 140 AMP or something).


If everything is good and you have power there then I'm thinking PCM as well. You can pick up Pre-Programed PCM's on ebay for like $200 shipped and ready for direct bolt in!!!!

 

Not to Hijack this thread but.....a friend of mine is having the exact issues with hers. 98 5.2L If the main Comp fuse keeps blowing is it safe to assume that the ecu is bad, or would it be somewhere or something else??
Thanks for the input Hydra!!
PS your new truck looks pretty sweet, great find!

 

Blowing a fuse at the PDC sounds like a voltage issue. Have the alternator checked then check the grounds, then a possible PCM.


By the way<------A ECU is a Ford name and a PCM is a Dodge name for the same part (comuter).

 

BTW: comuter is actually spelled commuter, and is someone who travels to work/school/wherever else they need to everyday, a computer is what controls the engines on out trucks

 

Alright mr. (enter name of southern florida city here) Son,
FF

 

I had the same problem with a '97 ram the battery went dead put in a new one and would start no fuel no spark put in a new pcm and been running like brand new ever since

 

Smart a$$......LOL


Actually it's miss spelled as "Computer" Dr. Sharps!......

 

A thousand pardons to the Mopar faithful!!!! I changed a speed density ford to mass air and it is stuck in my head, aven though I changed the PCM in my own Durango LOL I'll get it right eventually.

Okay so I told her to start at the alternator and then check all grounds first. Then she told me the whole story I hate that!! So apparently she is having the tranny replaced as the og went out. In the meanwhile, it has been intemitently(spellcheck Dr. Sharps) has not been starting guages dead, no fuel pump, no codes, but she has not seen "NO BUSS" yet and mileage in odometer has not blinked with KOEO like mine did. Fuel pump replaced twice and relay replaced no help. 3 140 amp fuse blew one after another when installed. Hope this helps the diagnosis. Should the start still be at the alternator then grounds then possible PCM replacement or could there have been issues caused by the tranny swap??
Thanks again all wise ones!! Your help is always greatly appreciated

 

LMAO @ Dr. Sharps.......

Ok, there is a serious short. You are going to have to find out what is causing the fuse to blow first. You might have to pull everything out (take picture first) then slowly replace to narrow down the area of draw or do a continuity to ground to possibly find it.

A wiring loom may have been pinched during install of the transmission.

 

Thanks Hydra, I will report back as soon as I know with any updates