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dbw help please. accel pedal isnt doing anything

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Old 08-28-2011, 07:39 PM
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Default dbw help please. accel pedal isnt doing anything

I have a dbw system off a 2005 cadillac escalade, and pcm from the same truck. the accelerator pedal is not responding.

The car starts up and idles. the app plug is getting 5V on the pins G (white/black) and B (purple). the throttle body motor is getting 5V at pins H and E.

while the car is running, if i unplug the tac, i dont hear a change in engine noise. when i plug it back in, i hear a slight change and back to the normal engine noise.

while the engine is not running, and key is in the on position, i can manually move the throttle blade.

any help please :[
Old 08-28-2011, 08:32 PM
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Originally Posted by zeeshan
I have a dbw system off a 2005 cadillac escalade, and pcm from the same truck. the accelerator pedal is not responding.

The car starts up and idles. the app plug is getting 5V on the pins G (white/black) and B (purple). the throttle body motor is getting 5V at pins H and E.

while the car is running, if i unplug the tac, i dont hear a change in engine noise. when i plug it back in, i hear a slight change and back to the normal engine noise.

while the engine is not running, and key is in the on position, i can manually move the throttle blade.

any help please :[

How does it idle? is it lower than it should?
My DBW TB just went out on me, it starts but the pedal does nothing, if i floor it, it kinda changes the idle. But ever since the TB broke it idles very low
Old 08-28-2011, 08:45 PM
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Originally Posted by 74novacustom
How does it idle? is it lower than it should?
My DBW TB just went out on me, it starts but the pedal does nothing, if i floor it, it kinda changes the idle. But ever since the TB broke it idles very low
to be honest i dont know if its idling low or high. sounds fine to me. here's a video of it idling on open headers

http://www.youtube.com/watch?v=ChPds...el_video_title
Old 08-29-2011, 02:18 AM
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i fixed it. it ended up being a corroded connector causing the tac to have a difference of voltages for app sensor 1 and app sensor 2, causing reduced engine power mode.



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