Tin worm attack ...
AO Gold Member
Join Date: Jan 2003
Location: United Kingdom
Take care ... forcing the butterfly open can damage the idle actuator gearing. If not you still stand a chance of moving the actuator out of sync and this is when you get idling problems and stalling. I'd always perform an idle reset after touching the throttle body in this way (that's the 90 sec on/off trick).
If you have the older throttle cable type, I'd recommend removing the actuator from the side of the throttle before you take the cable off the throttle. It can be done, you undo the throttle body bolts, turn anti-clockwise through 90 degrees. Remove the wiring connector, remove the three hex screws holding the actuator, then remove the actuator. You can then open and close the butterfly as much as you like.
Not worked on a fly-by-wire, but they are even more susceptible to problems.
And carb-cleaner is probably the best stuff to use.
HIS: 1998 156 2.0 TSpark with Sport Pack 2, sunroof and hi-level spoiler in Alfa Rosso. V6 intake mod, clear side repeaters and Zeatek undertray.
HERS: 2009 MiTo 1.4 95bhp Turismo arrived 21st November in Techno Grey with colour-coded headlight surrounds.
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