Tim, I have rebuilt throttle body for my '84 with automatic transmission but
I am hesitant about installing it as I live alone and remember how I almost
didn't get the original one back one when I installed a Boston Bob long
block.  How can job be done working alone and not mess things up?

John
----- Original Message -----
From: "Tim Demarest" <tim.demarest@POBOX.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, October 03, 2006 10:28 AM
Subject: Re: Surging 1.9 Vanagon

> Lyle,
>
> DON'T ADJUST THE THROTTLE SWITCH YET!!!... do yourself a favor and remove
> the throttle body, and clean it out thoroughly with carburetor cleaner. On
> my '85, gunk inside the throttle body was preventing the throttle valve
> from closing all the way, so the idle switch was never getting tripped. I
> foolishly adjusted the switch without cleaning the throttle body first,
> and
> had to re-adjust it after the cleaning.
>
> If you have an '85, then there is a single throttle switch, and it is
> mounted under a plate on the throttle body (you'll find it if you follow
> my
> advice and clean the throttle out). There is a test / adjustment procedure
> in the Bentley, you just have to search a bit for this special single-year
> throttle switch section. It's only a page or two, and it took me several
> trips into the book to find it... until I did, I was as baffled as you are
> by the pictures showing obvious, visible switches. Only adjust the switch
> if it fails the test procedure *after* cleaning.
>
> Also, it sounds like you've been spending a lot of time on this machine,
> so
> I assume you've already cleaned the engine ground stud on the left head,
> inspected and cleaned all the connections that go to it, made sure you
> have
> a good solid ground from the head to the firewall, and inspected all your
> vacuum lines and replaced any that are cracked, loose or collapsed. This
> routine maintenance (needed by any old vehicle) is cheap, easy, and
> necessary before you swap any active parts in the FI system! Bad
> electrical
> connections and/or weak vacuum will make perfectly good sensors return
> false results to the ECU.
>
> Tim
>
> At 09:31 PM 10/2/2006 -0700, Resiolute wrote:
>>Greg,  I don't have those switches on my engine...I see them both in the
>>Bentley, but none are on my engine.. it's buck naked right there...just
>>the
>>idle screw on the throttle..?  Lyle
>>----- Original Message -----
>>From: "Greg Potts" <greg@POTTSFAMILY.CA>
>>To: "Resiolute" <resiolute@copper.net>
>>Sent: Monday, October 02, 2006 7:24 PM
>>Subject: Re: Surging 1.9 Vanagon
>>
>>
>>>
>>>Hi Lyle,
>>>
>>>Apparently the throttle position sensor switch was made with a  plastic
>>>sensor that butts up against a steel adjusting screw, After a  while the
>>>plastic part wears down and the assembly needs to be pulled  apart and
>>>adjusted to compensate for the wear.
>>>
>>>At least that's how I recall Frank explaining it to me.
>>>Here's what van-cafe has to say about it:
>>>T
>>>hrottle switch and idle control components - The throttle switch must  be
>>>both in working order and adjusted correctly. With the engine not
>>>running
>>>and key turned off, you manually operate the throttle arm  back at the
>>>engine and see if you hear a click just as you move the  throttle on and
>>>off the idle or relaxed position. If not, then you  should attempt to
>>>adjust it. The throttle switch must be adjusted  correctly so that the
>>>idle stabilizer computer (situated behind the  passenger side tail light
>>>housing) and idle control valve kick into  action when you are in idle
>>>mode. If the throttle switch is adjusted  correctly and the idle either
>>>hangs up at high rpms or the vehicle is  prone to stalling, then one of
>>>those two components is likely at  fault. (Please review Bentley manual
>>>procedures on testing these two  components). While you are here it's
>>>also
>>>wise to check the throttle  body itself. When you grab the shaft you
>>>should be able to rotate it  but should not witness significant movement
>>>if you try to rock it  back and forth.
>>>
>>>Good Luck,
>>>
>>>Greg
>>>
>>>On 2-Oct-06, at 11:26 PM, Resiolute wrote:
>>>
>>>>Greg,  What kind of repair,  please explain if possible..?
>>>>Lyle
>>>>----- Original Message ----- From: "Greg Potts" <greg@POTTSFAMILY.CA>
>>>>To: "Resiolute" <resiolute@copper.net>
>>>>Sent: Monday, October 02, 2006 1:42 PM
>>>>Subject: Re: Surging 1.9 Vanagon
>>>>
>>>>
>>>>>
>>>>>Hi Lyle,
>>>>>
>>>>>Same thing happened with my Dad's 85 sunroof the week I had it at
>>>>>Buses Of The Corn. Frank Condelli was there and he was able to  make
>>>>>it
>>>>>better by adjusting the screws on the throttle body.  That  adjustment
>>>>>made if better for a week or so but then the  problem came  back (which
>>>>>he warned me about) ... it looks like  the throttle body  will have to
>>>>>be removed and repaired.
>>>>>
>>>>></Greg>
>>>>>
>>>>>
>>>>>On 2-Oct-06, at 3:18 PM, Resiolute wrote:
>>>>>
>>>>>>Greg, It's at idle...when it does it.  I'm buying another new   ground
>>>>>>strap this afternoon, I had them order it for me.  I  think  most if
>>>>>>not all is ground related.
>>>>>>Lyle Lathem
>>>>>>1985 Vanagon GL
>>>>>>----- Original Message ----- From: "Greg Potts"  <greg@POTTSFAMILY.CA>
>>>>>>To: <vanagon@GERRY.VANAGON.COM>
>>>>>>Sent: Monday, October 02, 2006 5:37 AM
>>>>>>Subject: Re: Surging 1.9 Vanagon
>>>>>>
>>>>>>
>>>>>>>
>>>>>>>Hi Lyle,
>>>>>>>
>>>>>>>Does the surging occur at idle or partial throttle?
>>>>>>>
>>>>>>>If at Idle it's a problem with the idle stabilizer circuit.  Possibly
>>>>>>>a mechanical adjustment is required, or it might be a loose or
>>>>>>>broken
>>>>>>>wire.
>>>>>>>
>>>>>>>If at partial throttle, it's "Vanagon Syndrome", a fault inside the
>>>>>>>AFM. This can be remedied by replacing the AFM or by installing a
>>>>>>>patch, see www.vanagon.com for more info.
>>>>>>>
>>>>>>>
>>>>>>>Happy Trails,
>>>>>>>
>>>>>>>Greg Potts
>>>>>>>1973/74/75/77/79 Westfakia "Bob the Tomato"
>>>>>>>www.pottsfamily.ca/westfakia
>>>>>>>www.busesofthecorn.com
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>On 2-Oct-06, at 7:42 AM, Resiolute wrote:
>>>>>>>
>>>>>>>>One thing I forgot to mention on our 1.9 engine,  as I said we are
>>>>>>>>having
>>>>>>>>problems, with injectors not fireing on the left bank.  We also
>>>>>>>>once the
>>>>>>>>engine is warm, and after being on the road for awhile, is a
>>>>>>>>surging engine.
>>>>>>>>It idles down, then reves up, idles down and rev's up.. over and
>>>>>>>>over...?
>>>>>>>>Any ideas on that problem..?
>>>>>>>>Thanks in Advance..!
>>>>>>>>Lyle Lathem
>>>>>>>>1985 Vanagon GL.
>>>>>>>
>>>>>>>
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>>>>>>>Checked by AVG Free Edition.
>>>>>>>Version: 7.1.405 / Virus Database: 268.12.10/459 - Release Date:
>>>>>>>9/29/2006
>>>>>
>>>>>
>>>>>
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>>>>>Version: 7.1.405 / Virus Database: 268.12.10/459 - Release Date:
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>>>
>>>
>>>
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>>>Version: 7.1.405 / Virus Database: 268.12.10/459 - Release Date:
>>>9/29/2006
>>>
>