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Old 03-06-2015, 02:51 PM   #1
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Throttle body problem, please help.

I have 2006 SAAB 9-3 2.0t auto sportscombi.
Yesterday I was driving local and suddenly lost power so I pulled over to side and restart car but it only crank it didn't start. so I had to tow and ran code scanner and result is …
"P0638 Throttle Mechanical - Throttle Position Deviation From Demanded”
So I exam the throttle body, butterfly plate is completely shut(close), it won't move at all.
What do I do? If I replace this, do I need to reprogram? Please help! Thank you!
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Old 03-06-2015, 03:08 PM   #2
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Yes, a new throttle body has to be programmed to the car. Those have very stiff butterfly flaps, it may not be completely stuck, but hard to say.
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Old 03-06-2015, 04:01 PM   #3
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Can you tell me how to reset that throttle body? I tried to move it but no luck yet. if I replace TB can it at lease start without programming it?
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Old 03-09-2015, 01:11 PM   #4
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No, it has to be programmed.
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Old 03-09-2015, 04:57 PM   #5
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Is it gummed up? Any chance of cleaning it?
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