My scanmaster just showed a code 21 today after starting my 87 gn for the first time in about 1 month. Never had this before, is this the TPS being too high? If so what is "TOO HIGH". my maximum full throttle engine off number is showing only 4.88. with engine on full throttle number appears to be 4.78.
Is this bad? why would I get this code?
Is this bad? why would I get this code?
