try a CHILTON BOOK with wiring diagrams
1986 Pontiac Firebird 2.8 Liter Firing Order
The 1986 Firebird came with either a 2.8L V6 or a 5.0L V8
The 1986 Pontiac Firebird fan relay switch can be found on the back of the fan motor. The relay switch is connected to the fan motor by two retaining screws.
The timing should be 8 degrees
Yes
At or near the power steering pump.
I do belive its the same as the 1985.It would be 123456
6 cylinder=.045 8 cylinder=.045
timing is adjusted by the ignition module and feed back from sensors
On the driverside firewall is first place I would look
there may be a problem with the torque converter or there is a short in a wire some where
try all American classics in Vancouver, Washington they had all the parts i needed for my firebird so im sure they will have that there. here is the website http://www.allamericanclassics.com/