08 5.3
has anyone done a swap using the 08 ecm, i had my ecm and tcm tuned by Nelson. doing my wiring harness myself, tried to fire it up today, can not get any fire to the coils or injectors, the elec throtle works and it has 57 lbs of fuel pressure, it cranks over fine, but no fire! i am wondering if I have to have more controls from the original truck, or if i am just missing something. I have the helms manual and i have hooked up all the wires that I had with the original harness, the engine is an 08 5.3 with 4l transmission, all stock except headers, any ideals? have checked all grounds and they are good, checked ground all the way to each coil and it is grounded good.
Last edited by oldcarstulsa; 08-16-2009 at 07:37 PM.
1987 jeep wrangler, 1999 LS 1, 4l60 231j transfercase, dana 30 frontend ford 8.8 rearend 3:73 gear ratio. sandersons shortie headers, 2.25 inch exhaust into 3 inch flowmaster muffler.