Jim Yanik wrote:
> jim beam <spamvortex@bad.example.net> wrote in
> news:xPqdnRKW25XOVCnYnZ2dnUVZ_qarnZ2d@speakeasy.ne t:
>
>> dex3703 wrote:
>>> Hi all,
>>>
>>> Thanks for the responses. Yes, it is a code 7. I read elsewhere on
>>> the group that this code is generally reliable.
>>>
>>> The problem has been over the last couple months, with the code set
>>> last week. I presume this would explain the bogging, dropping revs
>>> and seeming to konk out. It especially happens (when it does) when
>>> I'm at whatever speed I want, and then let off the gas. The problem
>>> is intermittent but does seem to be getting generally worse.
>>>
>>> I guess I'll tackle this next weekend then. Should I expect weird
>>> failures like this going forward?
>> the sensor has a carbon track that wears in the place where you most
>> commonly put the throttle while driving. if you disassemble the
>> sensor, you can see it. easiest solution is to replace the whole
>> sensor.
>
> Best solution,maybe not the "easiest"...

having done it both ways, i say doing it on the vehicle without removing
the throttle body [dpfi] /is/ the easiest way. use a chisel to start
the shear bolts rotating, and robert's your mother's brother.

>
>> you can "repair" the sensor by splaying the brush so it
>> contacts a wider track inside, but it's a lot of effort.
>
> I suggest trying a electronic contact cleaner/lube spray.(lightly)
> The TPS is nothing more than a potentiometer.

doesn't work - it's utterly sealed.

>
>> bottom line, replace and enjoy. symptoms are exactly as you describe.
>> once replaced, you'll be back to normal like nothing ever happened.
>