Lengthy cranking time

[VRidgley]

My new 2006 Ram 2500 seems to be taking an excessive amount of time to fire up on cranking. Cold starts (air temp > 59) in the morning are taking as long as 4-5 seconds, which seems a long time based on years of listening to diesels start after overnight in motel parking lots. Starts during the day,both cold and warm, are usually shorter (1-2 seconds). Are 4-5 second cranking times normal behavior on the 5. 9 Cummins?

 

[machinemover]

I've had mine reflashed twice for the same problem. Still seems to be a little lenthly, but better.

 

[Jack in Alaska]

Mine also does the same as yours. It has had the reflash for it just once. It is kind of anoying after having my 98. 5 start instantly for all those miles/years. Oo.

 

[wcjp]

The Cold Start reflash also helped my truck. Also increased mileage by about 2mpg. Still not nearly as fast starter as my 96'.

 

[formula]

Mine usually will start within ~2 seconds. Occasionally it takes 4 or so seconds. AFAIK, this is typical for the common rail injection system.



One thing is for sure though, it will never fire as quickly as the previous models with mechanical injection pumps, especially the 1st gens .



Sean

 

[regelitsu]

I had the same problem with my '05 G56 and was noticing that you guys also had a 6-spd. I had another '05 with a NV5600 and that one never had that problem. I just put in a SBC DD and the problem pretty much went away. I don't know if the dual mass flywheel has anything to do with it. I guess it might give a little on the compression stroke on start up and fool the CPS or something. Just my 2 cents.

 

[TowPro]

My new 2006 Ram 2500 seems to be taking an excessive amount of time to fire up on cranking. Cold starts (air temp > 59) in the morning are taking as long as 4-5 seconds, which seems a long time based on years of listening to diesels start after overnight in motel parking lots. Starts during the day,both cold and warm, are usually shorter (1-2 seconds). Are 4-5 second cranking times normal behavior on the 5. 9 Cummins?

Under 59 my wait to start light comes on, and it starts OK, at 60 no wait to start, and it cranks for like 10 seconds. It did it every time cold before the Reflash, now it only does it every once and a while.