Volvo RWD 120-130 Forum

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Fast Idle 120-130

posted by  someone claiming to be Rhys on  Thu Sep 23 19:49 CST 2004 [RELATED]

Hi Brett;
I don't know if you have power brakes, but if so remove the hose connection and try again for the fast idle. Same with the crankcase breather. Also be sure the intake and exhaust manifold nuts to the head are secure and the gasket is good. If all is well on those items, then remove the throttle return springs and wiggle the throttle shafts as you rotate them off idle. It sounds like there must be some play. The shafts and bushings wear oval, and when the two "merge" they form different passageways unpredictably. I have about forty pounds of SU shafts and plates ready to go to the scrap metal recyclers, and ALL of it is worn beyond belief.
Someone mentioned the distributor weights, and I have found that they will hang up at times and keep the advance up so much that the idle increases. Kind of a vicious circle with some extra air coming around the throttle shafts.
Rhys






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New Fast Idle [120-130]
posted by  brettsutherland subscriber  on Wed Sep 22 08:21 CST 2004 >


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