Truck shutting off
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Professional
Joined: Jun 2013
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From: Valkerswille, Marxland
Truck shutting off
I've been having an issue with my '05 Ram 1500 w/5.7 shutting off while setting at stoplights. It drives fine any other time.
But, after setting at a long red light, the RPM's drop and the truck dies on me. I'm had the battery tested and it is fine.
Any suggestions on where to start ?
But, after setting at a long red light, the RPM's drop and the truck dies on me. I'm had the battery tested and it is fine.
Any suggestions on where to start ?
Veteran
Joined: Jan 2007
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Throttle body...when was the last time it was cleaned? Do that if not done recently. codes??? If no code is thrown it could be a faulty sensor, I would check Crank Pos, Throttle Pos, Cam pos
Sorry Izero. We must have been posting at the same time.
Sorry Izero. We must have been posting at the same time.
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Professional
Joined: Jun 2013
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From: Valkerswille, Marxland
No check engine light. The throttle body was cleaned 6K miles ago with Re-man engine.
After driving the truck yesterday and setting at the same long red lights, it did not shut off.
I had the truck warming up this morning for 10-15 mins and it still did not shut off.
Thanks
After driving the truck yesterday and setting at the same long red lights, it did not shut off.
I had the truck warming up this morning for 10-15 mins and it still did not shut off.
Thanks
Champion
Joined: Aug 2006
Posts: 4,489
Likes: 4
From: New Jersey
No check engine light. The throttle body was cleaned 6K miles ago with Re-man engine.
After driving the truck yesterday and setting at the same long red lights, it did not shut off.
I had the truck warming up this morning for 10-15 mins and it still did not shut off.
Thanks
After driving the truck yesterday and setting at the same long red lights, it did not shut off.
I had the truck warming up this morning for 10-15 mins and it still did not shut off.
Thanks
Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
Late 04s and ALL 05s had this issue which was covered by a TSB (do a search I've posted the exact TSB before). It's a simple PCM flash (update) to fix it...
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From: Valkerswille, Marxland
That's a problem with the PCM, or to be more exact, the stock program all the early '04s were shipped with. There is a Chrysler TSB (Technical Service Bulletin) about it that all dealer's service departments have on file. During certain conditions, the idle drops too low, causing a stall. You can always re-start and everything is fine. Since the idle on our trucks is controlled by the PCM (computer) and otherwise is not adjustable, a re-flash of the PCM with an updated program fixes this. Any dealer can perform this. There has been much written on the subject.
My truck used to ALWAYS stall when I'd back up my driveway. I would pass by my driveway, shift into reverse and cut the wheel to start to back up it. Unless I kept my right foot on the gas pedal and keep giving it a little gas, it would stall 100% of the time.
I inadvertently fixed the problem without having the PCM flashed however. I added a lower temp thermostat (for other reasons obviously) and the lower temp makes the PCM think the truck is still warming up, so it does two things: 1) It richens the fuel/air mixture (the effect I was actually wanting), and 2) it keeps the idle slightly higher, like when warming up. After this install the idle stays up just enough that it no longer (ever) stalls when backing up the drive.
But, like I said, the "right way" to fix this problem is to have a dealer re-flash the PCM with the updated firmware...
My truck used to ALWAYS stall when I'd back up my driveway. I would pass by my driveway, shift into reverse and cut the wheel to start to back up it. Unless I kept my right foot on the gas pedal and keep giving it a little gas, it would stall 100% of the time.
I inadvertently fixed the problem without having the PCM flashed however. I added a lower temp thermostat (for other reasons obviously) and the lower temp makes the PCM think the truck is still warming up, so it does two things: 1) It richens the fuel/air mixture (the effect I was actually wanting), and 2) it keeps the idle slightly higher, like when warming up. After this install the idle stays up just enough that it no longer (ever) stalls when backing up the drive.
But, like I said, the "right way" to fix this problem is to have a dealer re-flash the PCM with the updated firmware...
Last edited by Rkymtnh; Dec 18, 2013 at 04:50 PM.