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2001 Toyota Corolla CE 1.8L Excessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp on
This toyota is causing us a headache! Has been in with the same reoccurring problem. Setting codes P0171 and P0420. The MAF has been replaced with a toyota part. The cat was replaced with 2 aftermarket normal emissions cats, then a california emissions afterma... Summary posted 5/4/2012 24 Replies Received (View Replies)24 Replies Received (Hide Replies)
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24 Replies Received
24 Replies Received
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Vehicle Data| VIN | 2T1BR12E11 |
| Engine | 1.8 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | Fuel Injection / efi |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions, Poor Idle Quality, Hesitation, Mil Lamp On |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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