check your coil pack.
do the bolts on a 1990 pickup truck go in vertical or horizontal
SOUNDS LIKE A BROKE TIMING BELT
No, It sounds like your timing is off or your firing order is wrong.
Grand - 1990 was released on: USA: 18 January 1990
The 1990 Grand Am was a popular car. The curb weight of the 1990 Pontiac Grand Am was 2,739 pounds.
Buy a thermostat and install it.
Torque convertor could be defective siezed up.
pull it out of the box to bypass the centrifuge
Grand Slam - 1990 My Favorite Sociopath was released on: USA: 1990
Grand Slam - 1990 Pilot was released on: USA: 28 January 1990
Grand Slam - 1990 Dog Days was released on: USA: 1990
Grand Slam - 1990 Byte the Bullet was released on: USA: 1990