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1984 Pontiac Bonneville Checking and/or resetting codes

Tiny
MARIONSCLAN
  • MEMBER
  • 1984 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
I need to find out how to read codes on an 84 Pontiac Bonneville, V6 with a 3.6L engine (according to the sticker on the car itself). It seems that most places don't read them on a car that old, but I know it is possible. Also, I have a constant oil light on and since I just bought it I wanted to reset the codes to see if the problem had been fixed or if it's a real problem or just a faulty light issue.

Thank you,
Marion
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Saturday, August 28th, 2010 AT 1:46 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi marionsclan, Welcome to 2carpros and TY for the donation

Application Connector Location

Bonneville (RWD), Caballero, Cutlass, El Camino, Grand Prix, Malibu, Monte Carlo, & Regal

1983-84 Diagnostic (ALDL) connector is under left side of dash


https://www.2carpros.com/forum/automotive_pictures/12900_GM_ALCL_47.jpg



About the oil light,do you hear any type of engine knocking noises? if not -Check the oil pressure with a mechanical gauge,if normal replace the oil pressure switch could also be the gauge/wiring problem. If abnormal could mean oil pump and engine bearing.
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Saturday, August 28th, 2010 AT 5:18 AM

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