S90 throttle body sticky

pac_jb

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pac_jb

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Feb 28, 2013
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Kuala Lumpur
Hi,

Anybody facing this issue, s90 70mm throttle body becomes sticky after the engine warms. It's very hard to drive during traffic jam, I tried to adjust the throttle body cable pulley screw , helped abit but still sticky.
 

hazziq

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hazziq

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Dec 29, 2010
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Well u better get it sort out quickly,
last time my throttle just suddenly got stuck at WOT.
End up ditching s90 and went back to stock
 

^pomen_GTR^

7,000 RPM
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^pomen_GTR^

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May 13, 2010
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what i heard from other fellow mech...

need to do some spring mod at the butterfly to reduce the spring tension so that it doesnt becomes sticky.... (probably shaft lubrication/minor adjustment needed also)
 

vr2turbo

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vr2turbo

Beyond 20,000 RPM!
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May 11, 2010
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what i heard from other fellow mech...

need to do some spring mod at the butterfly to reduce the spring tension so that it doesnt becomes sticky.... (probably shaft lubrication/minor adjustment needed also)
Reduce? not strengthen to put the TB back?:smokin:
 

g4i8y0t

1,000 RPM
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g4i8y0t

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Aug 5, 2010
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Hi,

Anybody facing this issue, s90 70mm throttle body becomes sticky after the engine warms. It's very hard to drive during traffic jam, I tried to adjust the throttle body cable pulley screw , helped abit but still sticky.
Try lubricate the throttle cable. I once faced this issue too, turned out it's actually the cable that is causing problem.
 

egb18c

500 RPM
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egb18c

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Feb 8, 2006
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Or maybe the valve expand at higher rate than the body of the throttle body, thats why its only sticky after a the engine is fully warm.
 

pac_jb

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pac_jb

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Feb 28, 2013
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Kuala Lumpur
The throttle feels better now, I adjust the throttle cable pulley screw again two full turn anti clockwise, the pedal feels more softer now