1996 Toyota Camry

1996 TOYOTA CAMRY
219 MILES • 6 CYL • FWD • MANUAL
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ERIC GAUCH
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  • 6 POSTS
I am working on a 1996 Toyota Camry with a 3.0L V6 (1MZ-FE). After the Check Engine Light came on and there was a noticeable difference in the way the vehicle runs,especially on start up, I pulled the codes to find PO 302 306 171 100 and 110 stored. I began troubleshooting by replacing the spark plugs, clearing the codes and test driving the vehicle. There was a noticeable difference in the way the vehicle ran, however, the Check Engine Light tripped again. I pulled the codes again and came up with PO 171. I ended up installing a used MAF sensor I had on hand, cleared the code, test drove the vehicle and again had the Check Engine Light come on. I pulled the codes again and came up with PO 171, system to lean bank 1. I am not sure what the next step in the diagnosis process would be? Any help would be greatly appreciated. On a side note I noticed a small amount of oil in the intake hose between the MAF sensor and throttle body. Any ideas? Thank you in advance.
Feb 16, 2011 at 3:19 AM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Check for vacuum leaks. Check to make sure the injectors are working properly and fuel pump pressure is within spec. With an active / live scanner, watch the voltage changes from the O2 sensors to confirm they are within spec. A bad sensor could be causing a lean mixture. Great job on the other repairs. You are almost there.
Mar 3, 2011 at 7:23 PM