1989 Chevy Cavalier exhaust

Tiny
ROADRUNNER17
  • MEMBER
  • 1989 CHEVROLET CAVALIER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 272,000 MILES
Why does my car start to stall then puff black smoke when the gas pedal is pressed more?
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Monday, April 27th, 2009 AT 3:50 PM

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Tiny
OBXAUTOMEDIC
  • EXPERT
Hello,

Sounds like you are running rich. Is the engine light on? If so will need to pull codes.

Here's How....

To extract a trouble from the computer for diagnostic purposes, the Assembly Line Communication Link (ALDL) connector is used.

Ground terminals A and B with the ignition "ON" and engine not running. The system will enter the diagnostic mode. In this mode, the computer will display a 12, three consecutive times, by flashing the "CHECK ENGINE", "SERVICE ENGINE SOON" or "MALFUNCTION INDICATOR LAMP" or light. A 12 consists of one flash, a short pause, then two flashes in rapid succession.

After 12 is displayed, any stored trouble s will be displayed by flashing the "CHECK ENGINE", "SERVICE ENGINE SOON" or "MALFUNCTION INDICATOR LAMP" light. All s are displayed 3 times each then a 12 will repeat. In the diagnostic mode, the computer will also energize all computer controlled relays and solenoids.


http://www.2carpros.com/forum/automotive_pictures/188069_95bonnevillealdl_connector_4.gif



ALDL Connector (Located Underdash)

The ALDL diagnostic connector is located in the passenger compartment
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Monday, April 27th, 2009 AT 4:05 PM

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