96 ram 1500 5.9 wont idel stalls but when i gass it it reves right up it misses at idel or low rpm i got 3 diagnostic codes 12,37,55 but none of these seem to explain the problem 12 because i just replaed the batt taking power from the pcm 37 because i dont have the towing package so no trans temp sensor 55 is just the last code some one please im out of monet i just hade to get all the solid break lines redone cause they were rusted new bat new water pump distributer plugs wires holloed out the cat cause it was cloged o2 sensor and my late grangfathers truck is still not running im desperate for your help !!!!!!!

 

idle air control
IAC sensor/module, mounted on side of throttle body.
(will not idle, runs fine at higher RPMs right?)
IAC motor/module

 

yeah check IAC (Idle Air Control)
also check the Cap and Rotor for cracks, burns, corrosion, arching
i just replaced the cap and rotor for 11.28 i now need the IAC thats 42.00 new
also look down through the TB (Throttle Body) and look for oil pools that would
mean your plenum gasket is leaking.

let us know what you figure out and if any of this helps.

 

idel air control ok im gonna check it out right now thank you !!!!!!!!!!!!!!

 

so i replaced the valve and i herd this horrible vacume from th tb is was then reading the manuel for the truck and it said the pcm would have to relearn the new valve but it never did it stayed at like 2000 rpm i let it run for like 10 mins. so i put the old one back on and up pluged it and it run better unpluged not good but better what do you guys think mabey i didnt install the new valve correctly ? or mabey theres anyther problem?

 

reset pcm-
only way you can do it-somewhat without a DRBIII

open hood, remove negative batt terminal...
let sit for like 30 minutes, install new IAC, re-connect batt. terminal.
start engine, drive vehicle so it can learn everything.

 

alright!!! thanks!!!!! ill let you know tommarrow night!

 

cant you also unhook neg battery terminal and turn ignition on for 30 seconds then shut it off and re-hook the battery cable up ?
wont that reset the pcm ?

 

2 Points: 1 - did you test the original IAC valve to check its operation and what did the tip look like? Black and cruddy? Did you try cleaning it? 2 - If the valve is cruddy then so is the bore it fits into and even a new valve may not seat properly.
WC

 

so i think my best corse of action is get a new valve, clean the seat where the pindel is doing to sit cause the old one was rusty and had some deposits of stuff ,then open the hood ,oh wait i think i aready did that!haha remove the neg batt terminal for say .5 hrs, than connect and install the new valve reconnect the bat and fire her up , got it !!!!! im waiting on the new valve to come in cause the one they had in stok i broke the sping on the dam thing turning it to get the clearence right 1 1/8' is what the pack said for the distance from the spindel to the base 1 it should be comming tomarrow though!!!!!!!!1