1991 Chevy S-10 code 34

BILLYO

MEMBER
1991 CHEVROLET S-10
6 CYL
2WD
MANUAL
90,000 MILES

When the code 34 comes up it says' circuit to high/ to low'. What circuit is it refering to. Idle, voltage?. Thanks, billy (New map was installed)

Saturday, January 31st, 2009 AT 1:34 PM

1 Reply

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

Is referring to voltage to the MAP sensor. Below are troubleshooting procedures for the code..

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