Fuel Mix problem at high boost
08-20-2005, 03:59 PM
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Fuel Mix problem at high boost
1986 944 Turbo, stock chip:
At boost of greater than 1.2, the fuel mix goes over-rich, and the car bucks. Here's what my mechanic has tried to fix it, with no change:
1. Change boost control (APC) valve
2. Checked all hoses for leaks
3. Unplugged the O2 sensor
4. Unplugged the TPS
5. Checked wastegate, ran full-open
6. Replaced ignition components
7. Replaced ECU
Next we're going to try replacing the airflow meter. Any other ideas?
Thanks!
At boost of greater than 1.2, the fuel mix goes over-rich, and the car bucks. Here's what my mechanic has tried to fix it, with no change:
1. Change boost control (APC) valve
2. Checked all hoses for leaks
3. Unplugged the O2 sensor
4. Unplugged the TPS
5. Checked wastegate, ran full-open
6. Replaced ignition components
7. Replaced ECU
Next we're going to try replacing the airflow meter. Any other ideas?
Thanks!
