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Throttle position sensor insufficiant ac?

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Old 09-08-2004, 06:18 PM
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Default Throttle position sensor insufficiant ac?

I'm throwing a throttle position sensor insufficiant ac code. Has anyone seen this code before? It came up right after I did the heads and cam swap and I think it may be causing my tranny not to down shift. If anyone can give me info on this code it would be appreciated.

Thanks
Mike
Old 09-09-2004, 09:19 PM
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any ideas?
Old 09-09-2004, 09:32 PM
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Originally Posted by MADCOW
any ideas?

What is the actual code number, did a search nothing like your discription comes up.

Gary
Old 09-09-2004, 10:53 PM
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I got the same thing after my trex + lsx90mm install. Im not sure if thats what causing the tranny shift problem or not. Does it seem to do it sometimes and other times it wont?
Old 09-11-2004, 11:41 AM
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Originally Posted by 2MuchRiceMakesMeSick
Does it seem to do it sometimes and other times it wont?
Yup! I'm going to try a different Tb and see if that fixes the problem. If I figure out whats causing it I'll let you know.
Old 09-11-2004, 12:32 PM
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I guarantee that code will cause auto shifting issues. You need to bump up the range of the P0121 code's min and max MAP values with larger cams with less vacuum. I have only seen it come up with cams larger than a ~TR230.




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