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Old 03-14-2011, 07:16 PM   #8 (permalink)
93_VX_Guy
EcoModding Lurker
 
Join Date: Feb 2011
Location: Lancaster, CA
Posts: 21

Mighty Mouse - '93 Honda Civic VX
90 day: 43.3 mpg (US)

Tank - '03 Infinity G35 premium
90 day: 22.24 mpg (US)
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Quote:
Originally Posted by Ryland View Post
It could also be the throttle position sensor on the throttle body.
It's not the TPS, MAP or the EGR, car has new NGK plugs, OEM cap/rotor, plug wires, fuel filter... Strangely the problem goes away when i unplug the 02 but it's a brand new NTK L1H1 sensor.

I've cleaned the EGR ports and valve, seafoamed the engine...
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