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RE: cruise contrl oscillations, uphill in '91 200tq

>i've noticed some strange cruise control behavior, with my '91
>200tq wagon:

>picture going up a long slope, at 2800 rpm, with a boost
>pressure of about .9 and in cruise control. i would have
>expected that this would feel the same as if a driver's foot was
>simply on the gas pedal. instead, i get a second and a half of
>very slight acceleration followed by a second and a half of very
>slight deceleration (and during the deceleration an almost
>inaudible sound as of a vacuum leak or an air leak), and this
>recurs regularly, on off on off on off... 

I would say one thing that it could be is the O2 sensor. Mine did this after I
got it but before I replaced the O2 sensor. It also did it on flat grounds, but
it wasn't as noticable. It had 90K on the sensor. But I didn't have the vacuum
or air leak.....


Paul Waterloo
Riverside, IL

91 200q

EMAIL: 74543.407@compuserve.com