1991 Chevy S-10 code 34

1991 CHEVROLET S-10
90,000 MILES • 6 CYL • 2WD • MANUAL
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BILLYO
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  • 1 POST
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)
Jan 31, 2009 at 1:34 PM
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BLUELIGHTNIN6
  • CAR REPAIR CONTRIBUTOR
  • 16,542 POSTS
Is referring to voltage to the MAP sensor. Below are troubleshooting procedures for the code..


https://images.2carpros.com/forum/automotive_pictures/261618_Noname_201.jpg


https://images.2carpros.com/forum/automotive_pictures/261618_Noname2_63.jpg


https://images.2carpros.com/forum/automotive_pictures/261618_Noname3_36.jpg


https://images.2carpros.com/forum/automotive_pictures/261618_Noname4_21.jpg

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Jan 31, 2009 at 1:39 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.