I have an 04 Ram with a hemi that starts fine when the engine is cold but after it is driven and sits for 30 min to 1 hour it turns over fine but will not start unless you push the accelerator. It runs fine after it starts and the check engine light has never came on. The dealership can't figure it out. They have put a new fuel pump and cam sensor on it as well as giving it a tune up. Surely there is another one somewhere that has done the same thing.

 

You need spark, air and flue to make a ICBE engine run.

On hot days, you can get vapor lock, flue boils in the flue lines before it can turn into a gas vapor, even on flue injected ingines this still happens.

If your engine is all ready warm, it should start that much quicker than if its cold, if you have to push on the acclerater, the injectors have put to much flue into the cylinders and not enough air, pushing on the acclerator puts more air into the cylinders, even in the manual, dodge says to do this in the event your hemi will not start.

All your dealer has to do is plug the truck in, start it and the coumputer in your truck should be talking to the coumputer in your dealers shop.

The on board coumputer in your truck runs the air flue mixture, fires the spark plugs, opens the injectors..

Not having the gas cap tightly on can cause problems with starting..

It really should be verry simple for a dodge dealer to figure out..

 

I am having the same problem with my 04 ram w/ 50k on it took it to dealer they said everything is in spec.charged me $100.00 to tell me they couldnt fix it,still doing the same thing,no codes or lights coming on just will not start when hot unless you step on eccelerator.

 

look in your throttle body for gunk.

 

I have taken the throttle body off and cleaned, This throttle body has the throttle position sensor built into it, Im not sure if I should put a new throttle body on it w/ the new electronics or other people have said to change the o2 sensor but there are four of them all cant be bad that could get costley and why would I have to step on accelorater to get it to start.

 

if it was a sensor it should throw a code,
my 05 hemi did this to me once, but i think it had something to do with my battery not being too good

 

And CELs or DTCs?

 

No DTC Codes are coming up or check ingine lights,I have replaced the plugs,EGR ,and took the throttle body off and cleaned. none of this correct the problem. starts right up when its cold but let it warm up and let it sit for an hour and wont restart unless you step on eccelorater.

 

try a TPS reset

 

Try using fuel and not flue...........to make it run