Loss in power above 3500 revs - Lexus IS Forum
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post #1 of 3 (permalink) Old 09-19-2018, 01:57 PM Thread Starter
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Loss in power above 3500 revs

I need help identifying why my car has a loss in power above 3500 revs. It almost feels like fuel or spark is being cut. I confirmed the vvti solenoid actuates with 12v applies and cleaned the small cone oil filter below the solenoid. I also replaced the fuel pump and plugs. Does anyone have any ideas?

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post #2 of 3 (permalink) Old 09-21-2018, 10:54 AM
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Check MAF and TPS.
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post #3 of 3 (permalink) Old 09-21-2018, 01:13 PM Thread Starter
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Mass air flow sensor fixed the problem!
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