Put a spark tester on the plug wire and see if you are getting fire to the plugs. Check to see if the fuel pump is running when you turn the key on. Check the fuel filter from the fuel pump to make sure it is not plugged. You can put a small amount of fuel in the throttle body by spraying it in and see if it starts. Check the catalytic converter to see if it is plugged.
SOURCE: fusebox diagram for 1989 buick park avenue
hi try Buick car owners club or an auto electrician that specializes in Buick is guaranteed to have a copy hope this helps glenn.......
SOURCE: 1991 buick park avenue will not run fuel pump is good and replaced the fuel filter
http://www.fixya.com/cars/t1810766-1991_buick_park_avenue_stop_running
Check out this link. It may help you with your problem.
SOURCE: Where is the ECU/ECM located
Hello customizer03,
It's under the dash on the right-hand side. See picture below.
Hope this helps.
Regards,
netvan
SOURCE: Buick Park Avenue Security System
Go to this link for a complete run down on the system and 2 different ways to bypass the security. Pics and info too.
http://vatspasslockpasskeysecurityhelp.yolasite.com/
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