Contour Enthusiasts Group Archives Forums General Troubleshooting Fix for p0172 and p0175

Hi Folks,
Got these a while back (they basically say the ECM had to 'overcompensate' (i.e. work outside normal parameters in order to super-enrichen the mixture) in order to compensate for a whole lotta air coming in for the combustion process.
Scoping thru' the CEG archives (yes, we ALL have to do that periodically to prevent 'repeat' questions!) I began to point my finger at the MAF sensor.
So, I disconnected my K+N and cleaned the "venturi" part really, really well. If you look inside you'll see two "bulb filament" type structures -- do not touch them! but just let the cleaning fluid do its work. I also did a nice job of the throttle plate.
Drove up to Lebanon, NH, over the weekend and put about 700 miles on the car. No CEL and super gas mileage! (about 26mpg).
It's always the simple stuff!
Latah,
Gerry

im pullin the same codes so u think if i clean the maf sensor that will do the trick??? do i have to then have the light reset or can i just unplug the battery and it will reset it off???

jason

I read in the Haynes manual that disconnecting the battery for at least 5 min. resets computer. Ive also been told that if (while the battery is disconnected) you press the brake pedal a couple of times it gets rid off stored energy in the system. So the 5 min rule would be the 1 min rule.

Easiest way to reset computer is to pull Fuses 4 and 11 in the engine fuse panel. Period. Just pull 'em, wait a minute or so, and throw em back on.