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Giddyup 03-28-2011 10:11 PM

Need Help with starting problem after truck is warmed up
Have a problem with my dodge ram starting after vehicle has warmed up. After I drive the truck for say 1 hour or so and go back to the house and park it for 30 to 45 min truck wont start unless i give it gas. Truck will hit and immedialy die unless I hit the gas. Just bought the truck 5 months ago and have spent 1200$ in repairs trying to trouble shoot. At one time the intake control sensor and the coolant temperature sensor came on. They both were replaced and still doing the same problem. If i park the truck for 24 hours and then start it, it will start fine. Only does it when its been ran and warmed up and shut off for 30 to 45 min. Its a 2005 Dodge ram 1500 with a 5.7L hemi with 116,000 miles. Repairs after i bought the truck include New Champion Iridium spark plugs, MSD spark plug wires, replaced all coil packs to MSD blaster's, throttle body cleaned back to new condition, coolant temp sensor, and intake air sensor. Anyone else have any ideas on what else it could be. Im thinking maybe the injectors are flooding thats why it wont start unless the gas is pressed or a fuel rail / pressure problem.

ramvan2500 04-13-2011 11:38 PM

Check into fuel injector try using a treatment also check into a new PCM, might not be the PCM but it sounds pretty PCM ish.

GTyankee 04-14-2011 12:05 AM

if it didn't start at all after it was warmed up, i would say the BATTERY was old or undersized

BUT, you say that it does start, but, won't stay running, so it is a different problem

ramvan2500 04-16-2011 01:19 AM

Check the alternator. Take a voltmeter and put the negative led (black wire) to the chassis ground and then with the truck running of course connect the positive (red) led to the positive terminal on the alternator. The voltage should be around 12-14ish volts. If the voltage keeps bouncing up and down then check to make sure all the battery cables are tight on there and the terminals are clean. If the alternator displays below 12 volts check into a new alternator.

NOT SAYING THIS IS THE PROBLEM but you can only diagnose one thing at a time. Like I said ECM possible alternator possible bad battery possible anything is possible.

brad12kx 04-22-2011 11:24 AM

Did this problem show up after replacing the spark plugs?
I have heard many stories where the Hemi is not happy with anything other that the basic copper core plugs spark plugs. :4-dontknow:

Giddyup 03-05-2012 10:39 AM

Still having starting problems!
I has since replaced throttle body with 90mm BBK due to other throttle body was bad and was sluggish, problem is still occurring. Have a new optima battery to cover that issue. Alternator is good I tested it. Also fuel pressure is 58 with key on an 60 pounds while running. Truck still doing same thing when truck is warm won't start unless I hit the gas. I'm out of options at this point, don't no what else to fix or check! Been a long year and half trying to figure it out. Even the dealer can't figure it out. Throwing no codes!

Giddyup 03-05-2012 10:42 AM

Problem occurred before plugs and plugs actually made truck run better! Guessing last owner didn't believe in preventative maintenance. Truck now has 135000 miles and has mileage keeps getting worse!

Dudemanbrother 03-06-2012 03:10 PM

Try a tps reset. It is probably still using the memory from the data received over 115k with poor maintenance. Key on but don't start it. Let all dummy lights turn off press gas pedal to the floor and slowly release. Turn key to off and then start.

cruelsin 03-09-2012 12:47 PM

I'm having the exact same problem would like to know what's going on. Had this issue for over a year. 04 ram 5.7 4x4 even made a thread about it

Giddyup 03-10-2012 07:56 AM

I reset the tps hope it works. Before I bought the bbk throttle body I had dealer relearn the old throttle body with there handheld that's suppose to adjust to your driving techniques. Hope this fixes the problem. Will post again of it fixes it or not!

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