Its not really adjustable, but you can modify it. First thing to do is figure out if the throttle body screw is turned in too far. Unplug the idle control motor and see what it idles at. It should be around 500 rpm. If its above that, back the screw out until it idles down.
Once the throttle is known to be in the right area, poke a voltmeter into the TPS connector from black to green. The OK range is something like 0.8 to 1.2, but usually aiming for as close to 1.0v as practical is advised. If yours is just totally wrong and the TPS is good, you can file out the two holes where the screws pass through to turn them into slots that will allow it to rotate. Make sure the two little ears in the TPS that engage the flat part on top of the throttle shaft are not broken. You'll usually see low voltage and it won't increase when the throttle is opened if those are broken. When you put the TPS on, you'll usually need to install it with the mount ears in-line with the intake and rotate it to line the screws up. You should feel when the TPS contacts the ears by the bit of extra resistance rotating it.
Mustang shops should know this. Its all the same stuff on the Fox cars.
Once the throttle is known to be in the right area, poke a voltmeter into the TPS connector from black to green. The OK range is something like 0.8 to 1.2, but usually aiming for as close to 1.0v as practical is advised. If yours is just totally wrong and the TPS is good, you can file out the two holes where the screws pass through to turn them into slots that will allow it to rotate. Make sure the two little ears in the TPS that engage the flat part on top of the throttle shaft are not broken. You'll usually see low voltage and it won't increase when the throttle is opened if those are broken. When you put the TPS on, you'll usually need to install it with the mount ears in-line with the intake and rotate it to line the screws up. You should feel when the TPS contacts the ears by the bit of extra resistance rotating it.
Mustang shops should know this. Its all the same stuff on the Fox cars.
Comment