I just installed new gm plugs and after market wires on my 1987 Grand National. For some unknown reason the car is stalling once I place the car in gear. It starts perfectly. I have 41lbs of pressure on the fuel rail and have been running Gulf 91 octane, ethanol free fuel in the car for a year now. I have run my Snap On "brick" on the car and it is not throwing any codes. Any ideas?
1987 GN Stall Issue
- Thread starter Cardad93
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John Larkin
Sublime Master of Turbology
- Joined
- May 25, 2001
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- 4,994
Idle Air Control (IAC) not set properly likely, perhaps Throttle Position Sensor (TPS) also. What number does your brick show for them at idle in park?
