5.3 swap drive by wire issue
Thread Starter
On The Tree
Joined: Feb 2014
Posts: 102
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5.3 swap drive by wire issue So I finally got my junkyard 5.3 running but the throttle is not responding when I depress the pedal. When I pulled the motor from a 2002 Suburban the throttle body was missing so I got a 1 connector replacement from another engine. The original throttle body was a 2 connector style but I figured the 1 connector would work if I just spliced the 1 connector plug onto the harness. When it powers up it cycles and opens the blade a little for idle. I can start and run the motor but it won't responded to pedal movement and the ECU is throwing a P0122 code. Was I completely wrong in thinking that I can use the 1 connector TB in place of the 2 connector TB? I'm using the original TAC module that came with the motor.
Also, if I put power to the motor and the TB cycles should it respond to pedal movement if the engine is not running?
Also, if I put power to the motor and the TB cycles should it respond to pedal movement if the engine is not running?
You will need to get the proper two connector throttle body that matches your PCM's OS, TAC module and pedal.
I'm not saying there isn't a way to make what you have work but the least dramatic (and expensive) way is to get matched parts all from the same vehicle or another just like it (same year, model and options).
I'm not saying there isn't a way to make what you have work but the least dramatic (and expensive) way is to get matched parts all from the same vehicle or another just like it (same year, model and options).
Staging Lane
Joined: Apr 2013
Posts: 67
Likes: 0
From: Fort Worth, Tx
Ill second that comment from gofast. Be sure all your connections are nice and snug. Do the wiggle test at tb, pedal, tac, etc...I had the same issue and kept popping codes and realized I rewired 2 wires backwards.Be sure the pcm is tuned for the correct tb also I.e. one connector vs 2. To be honest I would look for the tac and pedal assembly for the 02 suburban.
Provided you have the correct parts, like matching TAC, pedal, throttle body and tune. The OP doesn't have the right throttle body, so without some extremely good tuning, it's not going to work.
