Fw: Re: Still Surging

Phil Rose pjrose at frontiernet.net
Tue Aug 23 11:32:51 EDT 2005

At 9:10 AM -0400 8/23/05, rguzz at mindspring.com wrote:

>I rarely drive this car hard.

Rarely put your pedal to the floor? What self control!

>Surging is most noticeable at 3k RPM say in third. I changed the 02 
>sensor and was told sometimes the ECM needs to be re-set if it 
>doesn't sense the change from the new sensor.

As I'm sure you know, surging at partial throttle is a common symptom 
of a bad O2 sensor (among other possibilities). Even though you've 
installed a new sensor, it's possible that it is defective or wired 
incorrectly. Is it an oem sensor (i.e., plug 'n play) or one that 
needed to be spliced to the oem wiring?

>The list of possibilities is long...but ECU seems up there, 
>unfortunately. Perhaps a swap to see if that fixes anything

Before doing that, I'd first spend some time verifying the correct 
operation of the O2 sensor.



Phil Rose
Rochester, NY
mailto:pjrose at frontiernet.net

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