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1998 Toyota Camry

Question: octane sensor

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gaylem, 2.2L 4 Cylinder, Santa Fe, NM, April 17, 2011, 14:16
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 Rookie

Moved from sea level using regular grade gas (86 octane). Now at 7000'. Must use middle grade gas or car runs badly-lower level of octane due to altitude. When I ask mechanics what can I do to use the lower grade of gas, they say computer says everything OK. Is the octane sensor ruled by the computer or does it need to be adjusted by the mechanic.

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  • Answer #1

    louis1953 from AGCO Automotive Corporation, April 17, 2011, 14:35
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    The air is thinner at this elevation, but the octane requirements (e.g., compression, timing, etc) do not change. See if the mass air flow (MAF) sensor is clean. Very carefully cleaning this sensor may help. The vehicle should adapt to the higher altitude in time, if there are no other problems.

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