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Mass air flow sensor high.
Look for electrical issues, grounding wires are common.
Check for leaks in the ducting, look for bad grounds.
Battery negative test to block, less than .04 volts is ok.
Now test it to the chassis .02 is ok.
Do this with engine on.
TPS voltage should be steady at idle, move the throttle around and see if it always comes back to the same reading.
Check your throttle bore shaft for wear by wiggling it ( with the engine off)
if it is worn it will send all kinds of mixed signals to the computer, same result if the ground is bad, this is observed by the variation in idle voltage.
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