Deep
New member
Been trouble shooting my emissions system....following componets have been replaced:
1. Throttle Position Sensor
2. Oxygen Sensor
3. Idle Control Valve
4. EGR Valve
5. EGR Position Sensor
6. Distributor Cap and Rotor
7. Spark Plugs
8. Air cleaner
9. PCV Valve
10. MAP Sensor
11. Fuel filter
12. Divertor Valve
13. All vacuum lines have been replaced and rechecked for leaks...NONE
14. Engine timing checked and within specs.
Tonight while working on my bronco, I unplugged the MAP Sensor and started mt truck; for the first time in a month, it idled without surging and sounded top notch. When I plugged the MAP Sensor back in and started the engine again, the engine returned to surging and acting up.........could I have possibley received a bad MAP Sensor???? I have disconnected the battery after replacing componets, thus allowing the system to reset. What am I missing....what direction do you suggest????? Ready to have my bronco back on the road, I restored it and love it, but I am completely frustrated.
Would appreciate any help or suggestions.
Thanks.
1. Throttle Position Sensor
2. Oxygen Sensor
3. Idle Control Valve
4. EGR Valve
5. EGR Position Sensor
6. Distributor Cap and Rotor
7. Spark Plugs
8. Air cleaner
9. PCV Valve
10. MAP Sensor
11. Fuel filter
12. Divertor Valve
13. All vacuum lines have been replaced and rechecked for leaks...NONE
14. Engine timing checked and within specs.
Tonight while working on my bronco, I unplugged the MAP Sensor and started mt truck; for the first time in a month, it idled without surging and sounded top notch. When I plugged the MAP Sensor back in and started the engine again, the engine returned to surging and acting up.........could I have possibley received a bad MAP Sensor???? I have disconnected the battery after replacing componets, thus allowing the system to reset. What am I missing....what direction do you suggest????? Ready to have my bronco back on the road, I restored it and love it, but I am completely frustrated.
Would appreciate any help or suggestions.
Thanks.