When i floor it, it only reads 97.5% throttle. I tried to manually move the throttle plate, same results.

What does that mean? My sensor is off center? Should i loosen it, go full throttle, and tilt it till the VAFC reads 100%? Does ours even have play? Never messed with it...Any help appreciated!

 

humm, this may be better in engine tuning


gonna repost. this can be deleted


no option to delete posts in here? looked in edit?

 

You might want to look at the set up procedure of the vafc when calibrating to the throttle position of the car. You need to get into that portion of the set up of the vafc, there is a process to where you calibrate the throttle position so that the vafc reads the full range accurately.

 

i didnt see a spot to calibrate the sensor. i did see a voltage part. but thats just telling me the power, not that i can set it? still lost... i think its something with the sensor no?

 

There is a set up procedure for the throttle sensor to vafc calibration. Part of the procedure is pushing the gas pedal to the floor to 100%. You need the directions that go with the vafc to see where to access this feature in the unit and the explanation of set up to your car. This is my first guess on what needs to be re done. Good luck

 

i found it online in PDF. must have missed where you can recalibrate...

 

And just fyi, unless you have the vafc WOT throttle percentage to be 98% or more which you shouldn't, this isn't going to effect anything. Anything over 30% is fine as this is at the point in which the factory ecu switches from narrow throttle (closed loop) to WOT (open loop.)

 

fixed it. had to go to where i could view my voltages. wait 10 seconds. then hold it to the floor for 10 seconds. then bam. was working. thanks for your help in some way!

 

Yeah your welcome

 

IIRC its on the intial screen or something, the manual is a bit confusing but i held my foot to the floor for 10secs then off for 10secs and that did it.

p.s my WOT throttle % is 80/81%