回複：toyota 2001加速有"刺拉拉"聲音,昨天加重,並出現了P0171.

It seems we have two problems here: 1. the noise while accelerating, and 2. system too lean.

1. the noise while accelerating may be caused by an exhaust leak. The leak could be at exhaust manifold (cracked), exhaust manifold gasket, or exhaust pipe.

2. Since you replaced the MAF sensor last year, it is unlikely it is defective if you bought it from a dealer. However, still follow nonego's recommendation: clean it and check for intake air leak. If no leak is found, you may need the replace the intake manifold gasket.

Good luck

所有跟帖： 

• 排氣管子漏氣是鋪鋪的聲音。 -BigV8- ♂ (0 bytes) () 06/03/2011 postreply 00:30:43

• 謝謝諸位. 這刺啦啦聲是在加速,上坡的是候能明顯聽到 -knp- ♂ (182 bytes) () 06/03/2011 postreply 09:50:34

• 別急著換.好多人換過2遍全套,也沒解決.純給騙錢 -滿地找牙- ♂ (106 bytes) () 06/03/2011 postreply 10:00:10

• 是不是排氣漏你也說不清楚。還是去找個muffler shop去問問吧。 -BigV8- ♂ (35 bytes) () 06/03/2011 postreply 12:51:20