Pls Help,fuel Trim Issues On 1999 Audi A6 V6 Quattro - Car Talk - Nairaland
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| Pls Help,fuel Trim Issues On 1999 Audi A6 V6 Quattro by elviszzz: 5:04pm On Jan 27, 2013 |
7537 - Fuel Trim; Bank 2 (Mult): System too Rich 17535 - Fuel Trim; Bank 1 (Mult): System too Rich I had my car scanned today and came about d error codes above,can someone please tell me what they mean,will appreciate ur contributions. thanks. |
| Re: Pls Help,fuel Trim Issues On 1999 Audi A6 V6 Quattro by sultaan(m): 7:16pm On Jan 27, 2013 |
Siena will help resolve Audi issues, but just check for a leak(air) at your air intake system. Too rich means too much petrol in the exhaust, and this can be caused by too little air going in , or incomplete combustion cause by ignition problem, or injectors dripping. |
| Re: Pls Help,fuel Trim Issues On 1999 Audi A6 V6 Quattro by Nobody: 7:28pm On Jan 27, 2013 |
elviszzz: 7537 - Fuel Trim; Bank 2 (Mult): System too Rich You've either got an air leak, so split vacumn hoses, throttle body boot or leaking PCV hose. The PCV valve could also have failed. Sticky injector valves could cause primary leakage (fuel spray pattern poor) or an injector O-ring could be worn, causing secondary leakage (air being sucked past the injector base). A faulty MAF can also cause high long term fuel trim. A faulty MAF may not always show up during a scan. It could still be within tolerance, just be lazy. I would check all vacumn hoses and PCV before any further action is taken. |
| Re: Pls Help,fuel Trim Issues On 1999 Audi A6 V6 Quattro by nissparts(m): 4:34pm On Jan 28, 2013 |
I would say faulty MAF especially since both banks are affected. |
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