98 Avalon codes 302-304-306 and 300
3.0 V6 fed. 137 K mileage
Also lean and rich bank 1 codes 171-172
Cleared codes and now has low count of ramdom miss on all cylinders on missfire reading.
Engine running rough and miss at idle and low speeds and slow take off.
Runs good at higher rpm.
Any help or ideas.
Thanks
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Remember proper testing gives us the answer to many problems.
MT
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