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Old 08-17-2015, 06:34 PM   #1
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slow throttle return

2000 9-3 convertible with standard transmission. When depressing the clutch between shifts, the engine accelerates momentarily before dropping rpm's. It seems like a bad throttle return spring on older cars. How can I fix this?
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Old 08-17-2015, 08:41 PM   #2
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Quote:
Originally Posted by dale444 View Post
2000 9-3 convertible with standard transmission. When depressing the clutch between shifts, the engine accelerates momentarily before dropping rpm's. It seems like a bad throttle return spring on older cars. How can I fix this?
This is a T7 "feature". Rumor is that it is to burn off any fuel when you go off throttle to reduce emissions.

Some have suggested that a vacuum leak makes it worse, but no one seems to have found a way to make it better

EDIT: Going off throttle a quarter second earlier than you might normally do will cut it back. Seems unnatural at first, but once you get the hang of it, the end result is the same as you'd normally expect at shift time.

Last edited by BobSabbert; 08-17-2015 at 08:44 PM.
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Old 08-18-2015, 04:40 AM   #3
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Thank you. I'll try the early throttle release and look for a vacuum leak.
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Old 08-18-2015, 06:37 AM   #4
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Electronic throttle body woes. Like Bob said, adjust your driving style a little bit and you wont notice it any more. That being said, I have noticed some cars do it much worse than other and I can't find a reason why.
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