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Old 12-03-2003, 02:49 AM
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Join Date: Oct 2003
Posts: 29
throttle actuator body

For the technicians here...

what do u think about installing a new throttle body.....versus going out to a junk yard and picking up a used one....

are these things fail prone or was it my luck of the draw that mine is suspected to be not working properly....

Are there ways to make it work better.....such as cleaning...or changing a coil....or resistance inside it......I mean it does not make sense that a man made equiment that expensive ....that is causing very minor Idle be just tossed out and a new one put it...

Does not make sense to me.....we are not talking about a 100$ part...its 600$ thing...

the car is a 1996 c220 by the way with 74K
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Old 12-03-2003, 09:51 PM
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Join Date: Aug 2003
Location: Phoenix
Posts: 3,726
Very unlikely that the part has failed at that mileage. What are the symptoms and who's telling you it's bad? A friend of mine was having trouble with his, took it to an independent shop, they cleaned it up, one hour of labor, completely fixed the problem, and the mechanic, recently with the dealer, said "ya, when I was at the dealer we would just replace them rather than clean them". The cost to replace is well over a thousand dollars, and most dealer customers don't question it.
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Old 12-04-2003, 12:22 AM
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Join Date: Oct 2003
Posts: 29
The car was diagnosed and it showed 2 codes both relating to this Throttle actuator because of lean air mixture.

The reason I had diagnosed in the first place is because.......recently......and all of a sudden lsat week car hesitated on the free way at high speed....I felt a sudden short loss of power (less than a second), that repeat as if the car is either not receiving fuel, or not intaking air. This only happens at constant speeds, never at deceleration or acceleration. On surface street.....U could feel the idle dropping down reeeaaally low....the car actually shut off a couple of times at red lights.
I changed the plugs, plug wires, and put in a new fuel filter.

I am 100% positive my fuel system is fine. As far as electrical, there is still the coils to examin, (the mechanic ruled out a wiring harness, because it seemed new to him....??? although I could not back this up with the car's service i dunno).....then there is OVP ( I doubt beeing the problem), the throttle body..and finally the ECU ( hope not).

Suprisingly today...the car started normally...and drove back and forth to work symptoms.....although when i started it at work Idled around 450.

then after I rolled with it regulated. However I do feel a little play in Idle about 50-100 at the most.

What do u guys think about water in the system......I am not going to touch anything that expensive...because it is not logical for a part like this to fail this easily.....

anyways more input on this matter is very welcome and needed actually.

How would you go about cleaning a throttle body? by taking out the intake exposes the throttle valve....I was told not to touch the should I clean in if I don;t clean the valve and the surrounding.....or should I just clean the intake part around the valve without touching it.....I am confused.
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