I have a 2003 dodge 1500 half ton, I just put a motor in and it ran great for about 20 miles and it started acting like it was missing fire and vibrating and when I let of the gas it dies

Derek Odom

Asked by Jun 17, 2015 at 08:36 PM about the 2003 Dodge Ram 1500 SLT LB 4WD

Question type: Maintenance & Repair

But will start right back up and it flashes the
check engine light and looses power but at
times gets it back. I have only drove it for
about 30 miles. I don't know what the
problem is?

2 Answers


Go have it scanned to know the true issue,may be something not hooked up,being it was just installed,but in my oppion if it runs good for 20 miles then does it,check the catilac converter,may be bad.


It probably is something not clipped in tight. But I did have a similar problem with a 2007 swap. Ended up being the cam sensor. Ran great for a couple days then started spiting, sputtering and no cruise control. Changed the sensor and 10k later still good

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