Check Engine Light is on!!

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Old 04-24-07, 09:47 AM
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Check Engine Light is on!!

We have a 2001 Toyota Seinna mini-van in which the check engine light is on.

I took my handy-dandy scanner and it read the that "bank 1 & 2 lean." What does this generally relate to and how might I correct it??

CD
 
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Old 04-24-07, 02:07 PM
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This is usually a fuel pressure problem or a bad MAF. I would have someone hook a fuel pressure gauge up to your rail and check that. If that is good, I would lean more towards a bad MAF (mass air flow) sensor and then maybe some Air/Fuel sensors.
 
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Old 04-24-07, 04:58 PM
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Bank one AND two lean would indicate to me a rather robust vacuum leak.......I'd be checking all the hoses and connectors I could find.........Fords are NOTORIOUS for PCV connector leaks........maybe Toy has similar issues????
 
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Old 04-24-07, 05:44 PM
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My thanks to both of you. I'll check out both!! Frankly, I'd forgotten completely about MAF.

CD
 
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