Just an update.  I pulled the throttle body to investigate the throttle
position switch that wasn't clicking when moved off of the idle position.
I adjusted it and reinstalled the TB.  The van seems to be running as is
should now, but I've only had a chance to drive it once on a colder morning
since it's not a daily driver.  I also got feedback from Gowesty confirming
that my symptoms pointed towards a out of spec TPS.  They offered to ship
me a replacement throttle body, but I'd already done the work on the one I
had.

Thanks for the help, everyone.

Andrew
Portland, OR

On Sat, Oct 7, 2017 at 7:14 AM, Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> I suggested the cable mostly because a difference in adjustment could now
> be causing a bad spot in the cable to be apparent. Also, look underneath
> and check if the cable sheath is separating form that bracket underneath.
> That is another palce where the cable can hang up.
>
>
>
> Dennis
>
>
>
>
>
> *From:* Andrew R. [mailto:a.richar@gmail.com]
> *Sent:* Friday, October 6, 2017 6:33 PM
>
> *To:* Dennis Haynes <d23haynes57@hotmail.com>
> *Cc:* vanagon@GERRY.VANAGON.COM
> *Subject:* Re: "sticky" new Gowesty throttle body
>
>
>
> Thanks, Dennis, but I didn't have this specific issue with my old TB.  I
> swapped in the new once because the idle screw adjustment didn't work on
> the old one.  It also required effort to open the throttle, indicating the
> shaft may have been out of alignment/loose.  Someone on the samba suggests
> checking the temp II sensor, but my symptoms don't see to fit that of a
> failing sensor.  Never the less, I'll check its resistance and consider a
> new throttle cable.
>
> -Andrew
>
>
>
> On Fri, Oct 6, 2017 at 9:42 AM, Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>
> Could be you were having problems related to the cable with the old
> throttle body and it was miss diagnosed. Could also be related to how it
> was adjusted. Proper adjustment is with the accelerator pedal all the way
> down there should still be some room for the throttle to move open just a
> tad more. You should not be able to step on the pedal and bottom out the
> full open stop.
>
>
>
> Dennis
>
>
>
>
>
> *From:* Andrew R. [mailto:a.richar@gmail.com]
> *Sent:* Friday, October 6, 2017 10:56 AM
> *To:* Dennis Haynes <d23haynes57@hotmail.com>
> *Cc:* vanagon@GERRY.VANAGON.COM
> *Subject:* Re: "sticky" new Gowesty throttle body
>
>
>
> All seemed to be functioning as it should after disconnecting cable and
> checking TB for any hang ups.  Van sat in the 60-70deg parking lot at work
> and then I drove 125 miles to the beach and never had the issue.  Woke up
> this morning to a crisp 40 deg and high idle had returned.  Disconnected
> the cable and tried to get the TB to repeat the symptoms and couldn't do
> it.  I have the stock tension spring attached from the plenum to the TB.
> Accelerater cable has never been changed in the 14 years I've owned the
> van so I may swap in my spare, but I'm troubled by the coincidence of the
> cable now being bad right after my TB was changed out.  Would a vacuum leak
> when cold cause this?
>
>
>
> Thanks everybody!
>
> On Thursday, October 5, 2017, Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>
> Unless there is a defect or somehow the housing is distorted it is not
> likely the problem is the throttle body. I would replace the return spring
> with the correct one. It is common for the cable to fail in ways that will
> prevent full return of the throttle. The inner cable can fray causing it to
> hang up and the outer jacket can have separations causing it to expand and
> act like a spring opening the throttle. I would begin by checking the
> adjustment at both ends and leaving some extra slack. If you don’t remember
> when the cable assembly was last changed it is probably time.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [
> Subject: "sticky" new Gowesty throttle body
>
> Hi all,
>
> Have a couple hundred miles on the this unit now.  Initial feedback was
> great until this morning.
>
> http://www.gowesty.com/product-details.php?id=24718
>
> I experienced slow or no return on the TB upon letting off the gas on the
> freeway. Go to shift from 3rd to 4th and the RPMs remained steady in the
> 3-3.5k range through the shift. If I left the van in gear and slowed down
> via braking to 2K RPM or thereabouts, the idle would return to normal upon
> depressing the clutch. Let off the accelerator while cruising at 3k RPM and
> I could tell the van was not decelerating as it should be. Depress the
> clutch pedal and RPMs did not drop to idle levels. TB was not closing.
>
> Thoughts? I'm wondering if the original tension spring isn't up to the
> task and needs to be bent/shortened some to increase return force on the TB.
> Never had this issue before the new TB.
>
> 87 GL w/ Rocky Jennings 2.2L motor.
>
> thanks,
> Andrew
>
>
>