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Old 03-02-2011, 02:38 PM   #26 (permalink)
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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Got everything installed, double and triple checked all my work. Started up no problem, no check engine light etc...

Only problem is, now the part throttle hesitation i was experiencing previously has gotten much worse. Car runs fine until it reaches operating temp then it bogs and forces you to give it much more gas than before. I can tell having to drive this way is going to kill my MPG for sure. It's almost as though the car won't operate in lean burn mode at all.

When i pulled the old 02 it was white if this helps any.

The car has:
correct timing
new OEM cap, wires, rotor
new NGK plugs,
new fuel pump,

My thoughts are that since the wideband setup is much more sensitive, it's amplifying the problem.

My next guess would be:
clogged EGR, (****ty mechanic said this was working fine last week)
faulty TPS,
faulty MAP


I just unplugged the MAP and test drove it. Idle was rough but the hesitation went away completely! Does this mean the MAP needs to be replaced or does it mean the real problem is just being masked because the car is now running in limp mode?

Last edited by 93_VX_Guy; 03-02-2011 at 04:29 PM..
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