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Re: TPS adjustment (archive)

[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]

Posted by Rob Anderson on February 10, 2001 at 20:55:55:

In Reply to: TPS adjustment posted by Mark.C on February 10, 2001 at 19:53:55:

You have it correctly set. The problem is that if you have any space, you will not get fuel throttle enrichment. I take it you have an M30. If not this does not apply. On the big six, the throttle body has an idle stop that is part of the fuel throttle stop. If you have space, then you will find that if you open the throttle body all the way, the TPS won't switch to fuel throttle. This also applies to early 528es. If you have a late model 528e, you can adjust the idle and fuel throttle stops so you can place the TPS with the desired dead space, but I think that you will find that the car won't run better because the car is only programmed to idle on the that position of the TPS. I think what will happen is that you will find that the bogging will happen just later in the throttle movement. I personally have all of the cars I tune set to come off idle as soon as you touch the gas pedal. This helps with throttle response and if you find you are getting drive line backlash, then either be smoother on the gas pedal, or dip the clutch.
Hope this helps
Rob
M535i SIG Chief Technical Advisor
www.m535i.org


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