Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

High idle RPM after T5 throttle body cleaning

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Old 07-15-2012, 09:42 AM
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Default High idle RPM after T5 throttle body cleaning

I cleaned my throttle body today from my T5.

Some reason, car is now idling with high rpm:s after that.

Used some brac clean to clean it, and fastly flushed it with gas, and carefully cleaned with care with compressed air.

What i could have messed with?

I went to drive it and it didnt show me any engine problem lights.

Sprayed start pilot all around throttle body but no affect so its not air leak either...

Please tell me what i have prolly messed up there lol
 
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Old 07-15-2012, 11:10 AM
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how high its it idling?
 
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Old 07-15-2012, 12:44 PM
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problem solved, ty anyways! assembled it carefully again and setted idle right, now its perfect
 
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Old 07-15-2012, 05:12 PM
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I'm not sure what Brac Clean is but a throttle body's plate is coated with an anti-corrosion material that can be stripped off by things like carb cleaner. It's always a good idea to use only a throttle body specific cleaner on them. Doesn't have anything to do with your problem but just a FYI in case someone getting ready to do theirs is surfing this thread.

The reason for the coating is due the close tolerance between the plate and the bore when it's idling as almost all the air for idle is coming through the idle air control motor. If the plate gets corrosion on it's edges it could get sticky or jam in the bore.
 
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