So interesting development on truck. Lately after initial startup the truck lopes real bad and would probably stall unless I gave a little fuel. After some throttle she's fine and first return till next startup Thinking air leak or ECM issue at startup that levels off Leaning air leak Fuel psi is steady at 15 psi before and after

Have you tried resetting the APPS??

John, a buddy of mine has an ECM from a 2001 auto, I bet you could try if you needed to.

John, a buddy of mine has an ECM from a 2001 auto, I bet you could try if you needed to.

Well .... i think I fixed it ........... Im goign to wait a few more days before I post the fix - make sure it stays (been about 4 days now and completey gone ........ used to be EVERY start).It wasnt what I was expecting .......

Don't leave us guessin' tell us...

Don't leave us guessin' tell us...

ok - I was going to wait a few more days to be sure ..... and also I sent a PM to bob ....... but havent heard back yet as to his thoughts ..... basically its started a few months back, got slightly worse, and was happening 99.5% of teh time you started the engine after being idle for a while. Only when put into 'D'. I will upload a video. Fule PSI was 16 all the time and apps % and rpm seemed stable. I was thinking air leak in the fuel. To fix I unloaded and reloaded the smarty program - simple as that. Now the question tom me is ... 1) Was it something wrong with the ECM fueling tables - and smarty reflash fixed it ? 2) Did the smarty cause it as well ? Or it was just the cure ??? - I messaged Bob about this. But 5 days now - no repeat !! And no ECM replacement - yay

my dodge use to lope really bad some times when i put it in gear it would die . i changed the crank sensor and it stopped loping i dont rember why i changed the sensor it was a long time ago