Mechanics

NISSAN HARDBODY SENSOR PROBLEM

1993 Nissan Hardbody • 147,000 miles

My truck has a misfire, loses power going up hill and bogs down to almost shuts off when I push the accelerator to the floor. I have changed the mass air flow sensor, O2 sensor, spark plugs and wires. I don't know what else it could be.
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Snoman3389
March 31, 2013.




Check and test the throttle position sensor closed and wide open throttle voltages and also the exhaust system for restriction
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Rasmataz
Mar 31, 2013.
I changed the throttle position sensor today and the exhause is clear except for a leak at a flange. Nothing changed, except I noticed that my air intake box where my air filter is has a high pitch whistling sound when the engine is revved. I'm at a loss.

Tiny
Snoman3389
Apr 2, 2013.

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