Question about 1992 Nissan 300ZX
1992 300 zx non turbo ,starts good will not rev moor than 2500 rpm ,and sounds like it hits a rev limiter and pops from intate ,but on the throttle position switch it has 3 wires from plug but i can only find 2 from the harness to the plug were dose the 3rd come from
This is a classic symptom of a bad mass airflow sensor. Nissan designed this as a protective feature on the car. If the mass air sensor goes bad, the computer limits the car to a 2400RPM rev limit to prevent damage.
The sensor is under the center nose panel between the headlights. Take that off and on the back of the airbox (which fills this space) you'll see a pipe coming out that meets at a "T" with another hose going across and down under the headlights. That pipe off the back of the airbox is the mass air sensor (it has a harness plugged in).
Posted on Mar 27, 2009
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Posted on Jan 02, 2017
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