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CODE 21 HELP????

nelson84

Well-known member
Joined
Aug 28, 2006
Messages
829
Location
Canada
Corvette
84 Z51 two tone bronze coupe 85 black on black
I have a code 21 and the check engine light stays on. Do I just replace the throttle position sensor, because it is reading high? Or is it the coolent sensor telling the computer it is colder outside to make the throttle position sensor to give more fuel? Or do I need new injectors?
 

nelson84

Well-known member
Joined
Aug 28, 2006
Messages
829
Location
Canada
Corvette
84 Z51 two tone bronze coupe 85 black on black
I ordered a TPS sensor, I will replace it and see what happens. The car hesitates a little bit so that should do it, I hope.
 

nelson84

Well-known member
Joined
Aug 28, 2006
Messages
829
Location
Canada
Corvette
84 Z51 two tone bronze coupe 85 black on black
I installed the TPS sensor now it runs great.
 

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