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1990 Mercury Grand Marquis LS 5.0L Poor Idle Quality, Surge, MIL Lamp on, no data
This one came in with an O2 & EGR codes. Cleaned the EGR and that ones gone, but the O2 sensors show rich about 95% of the time. When first started each time they will go low because of upstream air. When that switches then they stay high. Rpm's no real affect...
FIX posted 6/13/2001
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Related Documents & Media | VIN | 2MECM75F3L |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Emissions | calibration 8-22e-r00 |
| Symptoms | Poor Idle Quality, Surge, MIL Lamp on, No Data |
| Occurs | Always |
Trouble Codes
| 33 | egr valve not opening |
Message Closed w/FIX
Vehicle Data
1990 Mercury Grand Marquis LS
| VIN | 2MECM75F3L |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Emissions | calibration 8-22e-r00 |
| Symptoms | Poor Idle Quality, Surge, MIL Lamp on, No Data |
| Occurs | Always |
Trouble Codes
| 33 | egr valve not opening |
Video