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Page 5+: 60 results shown for Throttle valve switch.

Source-balanced relevance: matches from both collections are interleaved, with source dates breaking ties. Restoration time is not the original posting date.

• Re: Idle Stabilizer System Delete. Cause Bog Off Idle?
  Historical mailing list - Neil N
  Sun, 12 Apr 2015 09:59:03 -0700
  ...Excessive > valve deposits, poor injector spray patterns and even worn valves/guides are > common culprits. Unplugging the throttle switch will completely remove that > as...
• fuel supply testing
  Historical mailing list - Mark Drillock
  Sat, 31 Mar 2007 09:03:07 -0800
  ...I > have tested fuel pressure at the T and it is at spec. > > I am thinking that the throttle valve switch is a possible...
• Re: Super fast idle - Update
  Historical mailing list - Todd Last
  Wed, 26 Mar 2003 23:34:26 -0800
  ...The mechanic did adjust the AFM mixture and throttle switch - and that alone made a noticable difference. Is there a concensus that having a...
• Throttle Valve Switch
  Historical mailing list - Marlan Blair
  Wed, 14 Sep 2005 19:26:51 -0400
  ...After hours of pouring thru the bently manual, I deduced that the square plastic switches that ride next to the throttle body, and clearly...
• Re: low torque
  Historical mailing list - Dennis Haynes
  Tue, 2 Oct 2012 21:15:28 -0400
  ...As for the vacuum retard as soon as the throttle is opened the timing should quickly advance if all is well. If the throttle...
• Re: 87GL, Cold Engine Problem
  Historical mailing list - Randy Herd
  Tue, 6 Jun 2000 11:37:21 MDT
  Mark, There is a switch under the throttle housing on the engine that can cause this problem. My 86 had similar symptoms along with...
• I need help, please
  Historical mailing list - Dan N
  Fri, 2 Dec 2022 11:34:39 -0800
  ...cap and rotor - NGK BP6ET are recent. - Throttle body switch checked fine - Idle screw on throttle body cleaned - A good fuel pressure regulator was...
• Re: 1.9 runs better with 02 sensor disconnected-kinda long cause I need to ventialte
  Historical mailing list - Roger Sisler
  Fri, 17 Mar 2006 11:51:23 -0500
  ...put underload.Another drivability issue related to a correctly adjusted throttle valve switch? Once again, these are preliminary adjustments to determin the needed solution...
• Re: The two throttle valve switches, redux
  Historical mailing list - Richard A Jones
  Wed, 26 Sep 2007 20:04:59 -0600
  > Exactly -- is the ECU a mysterious black box? 0r is there a description > of how it makes its decisions anywhere? Mike: It is a...
• Re: FW: Idle Control Issues
  Historical mailing list - neil n
  Fri, 19 Jul 2013 17:45:51 -0700
  ...AC switched off. I usually just blip the > throttle and it settles down again..... Can I assume the idle air control valve is > "sticking...
• Re: 1987 VAN IDLE
  Historical mailing list - Kenneth Wilford
  Tue, 16 Oct 2007 09:39:59 -0400
  I would check your throttle position switch first as this can be sensitive to heat if it is just barely out of adjustment. The...
• Re: Automatic transmission, WTF?
  Historical mailing list - Al Knoll
  Fri, 28 Aug 2009 13:01:49 -0700
  ...WOT characteristics of the shifting have to do with a valve that is controlled by the throttle/accelerator linkage directly. More can be found...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - Scott Daniel - Turbovans
  Tue, 26 Jun 2012 21:26:55 -0700
  ...CO Adjusting Screw, Throttle Valve Switch Test Light Video etc. > > On 6/26/2012 6:23 PM, neil n wrote: >> The TB seal may...
• Re: Are all 2.1 engines digifant?
  Historical mailing list - David Beierl
  Sun, 4 May 2014 14:16:44 -0400
  ...If the throttle switch isn't closing at idle the idle will never settle down below 1,000 rpm the way it's supposed...
• Re: Surging 1.9 Vanagon
  Historical mailing list - John Lauterbach
  Tue, 3 Oct 2006 10:52:13 -0400
  ...On > my '85, gunk inside the throttle body was preventing the throttle valve > from closing all the way, so the idle switch was never...
• Re: CO Adjusting Screw. PO Set it All The Way In? Base Setting?
  Historical mailing list - neil n
  Thu, 21 Jun 2012 23:27:02 -0700
  ...Maybe the > slight > play I feel in the TB shaft is enough to cause an issue at throttle valve > switch. But this switch closes...
• Automatic transmission, WTF?
  Historical mailing list - Troy
  Fri, 28 Aug 2009 14:16:58 -0800
  ...WOT characteristics of the shifting have to do with a valve that is controlled by the throttle/accelerator linkage directly. More can be found...
• Re: PS Pump switch high idle question
  Historical mailing list - Dennis Haynes
  Wed, 4 Jan 2017 05:14:02 +0000
  That air through the valve is metered by the air flow meter. Has the same effect as opening the throttle. Dennis -----Original Message----- From...
• Re: The two throttle valve switches, redux
  Historical mailing list - David Kao
  Tue, 25 Sep 2007 22:56:21 -0700
  ...Lemme try again. > >> > >> On the earlier 1.9L's there are two switches on the throttle valve. One > >> closes when the foot is off...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - Jeff Schwaia
  Wed, 27 Jun 2012 18:48:42 -0700
  ...CO Adjusting Screw, Throttle Valve Switch Test Light Video etc. "I was a lowly mechanic at a VW shop in Leucadia, CA." There was...
• Fw: Re: Emission Failure - Excess Hydrocarbons - Oxygen Sensor? (
  Historical mailing list - Robert Lilley
  Fri, 28 Apr 2000 23:19:56 EDT
  ...s- A valve leak will cause a REDUCTION in the vacuum the engine can produce at idle. Check that the throttle switches are working...
• Re: Idle problems
  Historical mailing list - Rico Dagastino
  Fri, 23 Oct 2009 08:36:27 EDT
  ...In addition, i checked the throttle position switch under the throttle body with a VOM and the switch operates as it should per the...
• Re: Arduino and Vanagons
  Historical mailing list - Neil N
  Wed, 20 Nov 2013 11:48:14 -0800
  ...Isn't the ICU basically taken out of the picture any time the throttle is just off idle or at WOT? (throttle enrichment switch...
• Re: Idle stabilizer
  Historical mailing list - Johan Nyberg
  Sun, 11 Oct 1998 11:55:06 +0200
  ...with bad throttle switch and/ or bad bypass air system to run quite decently by pulling the plug on the bypass valve and set...
• Re: Herky-jerky slowdown -- '87 Wolfs
  Historical mailing list - Modl6971
  Tue, 21 Apr 1998 01:55:55 EDT
  ...understand closed throttle. Also when that is checked and or repaired, there is a milliamp setting of your idle stabalizer valve itself and needs...
• Re: Idle control system
  Historical mailing list - neil n
  Wed, 1 Aug 2012 11:22:00 -0700
  ...The throttle valve switch, as I'm learning, can be affected by a worn throttle body. This is mentioned in Bentley. What I experienced...
• Re: Idle control system
  Historical mailing list - Steven Sittser
  Wed, 1 Aug 2012 15:47:20 -0400
  ...valve piston to move, so the connection is good. > The throttle valve switch, as I'm learning, can be affected by a worn > throttle...
• Re: Arduino and Vanagons
  Historical mailing list - Al Knoll
  Fri, 15 Nov 2013 12:56:39 -0800
  ...throttle valve switch > > 1 PWM output: idle speed stabilizer valve > > > > The ICU adjusts the PWM signal to the idle air valve about 4 times...
• Re: Why doesn't fuel shut off?
  Historical mailing list - Dennis Haynes
  Tue, 30 Oct 2007 00:19:31 -0400
  ...They used to use throttle dash pots or the air cooled even used a decal valve to control throttle vacuum when the engine is...
• throttle body fun
  Historical mailing list - Alistair Bell
  Sun, 9 May 2010 12:07:10 -0700
  ...throttle valve position switch (TVPS), even though it had been recently adjusted. I was suspicious that the throttle shaft fit in the throttle body...
• Re: Won't accelerate
  Historical mailing list - Scott Daniel - Turbovans
  Sat, 5 Nov 2011 14:06:04 -0700
  ...thing I noticed, the idle switch is clicking off a little late, (the >>> one under the Throttle Valve) >>> >>> I have no idea what causes...
• Re: 4k rpm at idle help?
  Historical mailing list - Reinhard Vehring
  Thu, 30 Aug 2007 18:13:53 -0700
  Jim, the only thing (that I knopw of) that can cause idle that high with the throttle body closed is an idle control valve...
• Re: HELP - No idle when cold
  Historical mailing list - MOST,DAVID
  Wed, 1 Dec 1999 12:39:56 -0800
  ...I am told that the throttle valve switch can cause a similar problem. I checked and adjusted the switch per the Bentley but the...
• Re: Throttle Valve Stop Screw Adjustment.
  Historical mailing list - neil n
  Wed, 4 Jul 2012 10:55:12 -0700
  ...Seems I"m not entirely crazy (connecting an LED to throttle valve switch prooved useful). Dennis: I'll check the evap valve operation. Engine...
• Re: 1987 High Idle
  Historical mailing list
  Fri, 3 May 1996 18:37:10 -0400
  ...throttle position switch. >> >> >I had this exact same thing happen this morning, but I don't have an extra >Idle Stabilizer Control Valve to...
• Re: Idle valve and ISCU
  Historical mailing list
  Wed, 10 Sep 2003 08:04:20 -0400
  ...Is the Idle valve usually = >closed when the gas throttle is pushed? and reopened when the gas = >throttle is released? > >Germain > \\\\////\\\\////\\\\\////\\\\\////\\\\////\\\\////\\\\////\\\\////\\\\////\\\\ Frank Terhaar-Yonkers...
• Idle Problem 1987 2.1 Van Automatic
  Historical mailing list - g august
  Sun, 11 Nov 2007 16:36:39 -0600
  ...wheels are pushing.I adjusted my throttle valve switch to make the fuel shut off when the throttle was closed which brought the idle...
• Re: sluggish acceleration
  Historical mailing list - Craig Oda
  Tue, 23 Nov 2004 13:49:50 -0800
  ...On an 83.5 digijet, I would check the throttle switches. There's two switches that tell the position of closed throttle and WOT...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - JRodgers
  Thu, 28 Jun 2012 15:33:56 -0500
  Try the smoking thing with one of those bee smoking devices that beekeepers use. That might work if adapted. John On 6/28/2012...
• idle problem - fixed
  Historical mailing list - Alistair Bell
  Mon, 16 May 2005 16:22:49 -0700
  ...BTW all electrical connections were cleaned, throttle switch operation verified, idle unit working, ign timing spot on, as was valve timing. Alistair '82 westy...
• Re: Idle Control System Explanation, please?
  Historical mailing list - Stuart MacMillan
  Fri, 13 Mar 2015 18:32:53 -0700
  ...Anyways, Ill save those questions till after i get the new throttle body and switch in, mostly curious about the module and valve effects...
• Re: PS Pump switch high idle question
  Historical mailing list - Alistair Bell
  Tue, 3 Jan 2017 22:10:54 -0800
  ...PS Pump switch high idle question >> >> So it's as I guessed, the pulse cycle is biased towards more ICV valve open time when...
• Re: throttle shaft bushings ?
  Historical mailing list - Dennis Haynes
  Sat, 14 Jan 2006 19:04:01 -0500
  ...the shaft is cockeyed ever so slightly.After all, the correct throttle switch adjustment is just .002-.004.Dont take much shaft tilting to...
• Re: How to disconnect idle stablizer??
  Historical mailing list - Karl Mullendore
  Wed, 27 Sep 2000 15:37:25 -0400
  ...It is adjustable by loosening a small allen-head screw above the switch on the throttle body, and then turning the other small allen...
• Orphan Wire Needs Help
  Historical mailing list - Budd Premack
  Tue, 28 Mar 2000 14:07:31 -0600
  ...Based upon location, it seems to me that it may belong to the throttle valve switch. I cannot see any place for it to...
• Re: FrontFire?
  Historical mailing list - Dennis Haynes
  Sun, 14 May 2006 15:23:46 -0400
  ...Pretty sure the throttle closed switch is correctly adjusted, timing is good, etc. The latest thing that has me worried is a bizare "clunk...
• Idle Stabilizer System Delete. Cause Bog Off Idle?
  Historical mailing list - Neil N
  Sat, 11 Apr 2015 14:43:40 -0700
  ...the throttle opens. (throttle switch input?) Regardless if engine off (ign. on) or "1" wire connected or not, engine running, the valve draws far...
• Re: Throttle Valve Stop Screw Adjustment.
  Historical mailing list - Scott Daniel - Turbovans
  Thu, 5 Jul 2012 12:36:57 -0700
  ...just never heard of it being called a Vacuum Switching Module .. which is misleading anyway, in my mind, as it does not switch vacuum...
• Re: CO Adjusting Screw. PO Set it All The Way In? Base Setting?
  Historical mailing list - neil n
  Thu, 21 Jun 2012 15:54:10 -0700
  ...Maybe the slight play I feel in the TB shaft is enough to cause an > issue at throttle valve switch. But this switch closes...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - Scott Daniel - Turbovans
  Wed, 27 Jun 2012 13:58:04 -0700
  On 6/27/2012 6:59 AM, Dave Mcneely wrote: > thanks, Jeff, for answering the question I had. My intuition was correct. mcneely > > ---- Jeff...
• fuel system questions
  Historical mailing list - James A. Creech
  Mon, 13 Nov 2000 18:56:10 -0500
  ...Any shortcuts here (like quickly & temporarily stopping up the sensor hole with something during the switch to new sensor?) (3) On the throttle valve...
• Re: High idle problem
  Historical mailing list - Richard Golen
  Mon, 7 Jan 2008 14:47:30 -0500
  ...I would also try swapping in a known good idle air valve. >You have already checked and adjusted your throttle position switch, correct? > >Ken...
• Inputs to idle computer
  Historical mailing list - tabe johnson
  Tue, 20 Sep 2005 00:18:01 -0400
  ...I've checked the contacts on the idle computer, checked the throttle switch, and the idle air bypass valve is operating smoothly. Does anyone...
• Re: Arduino and Vanagons
  Historical mailing list - Dennis Haynes
  Wed, 20 Nov 2013 15:14:26 -0500
  ...Isn't the ICU basically taken out of the picture any time the throttle is just off idle or at WOT? (throttle enrichment switch...
• 2 liter...By Jove i think i got it!
  Historical mailing list - Tarheel
  Wed, 18 Jul 2001 13:55:08 -0400
  ...Found that the little switch on top of the throttle body was bent not allowing it to engage for full throttle enrichment. Found crummy...
• Re: Rough Cold Start
  Historical mailing list - Ken Lewis
  Wed, 14 Dec 2005 19:14:58 -0500
  ...Somehow the new throttle position > switch got out of adjustment and was not "on" at idle. After making a > minute adjustment, all was fine...
• Re: 85 Vangon revs drops, revs drops, revs drops, and then dies after a few minutes of this cycle
  Historical mailing list - Scott Daniel - Turbovans
  Mon, 24 Jan 2011 14:52:59 -0800
  ...if the throttle switch stays closed with too much open throttle .. say you want it closed at zero throttle but breaks contact at 5...
• Surging between 1700 and 3000 rpm
  Historical mailing list - mordo
  Tue, 3 Apr 2007 20:53:19 -0400
  ...I am thinking that the throttle valve switch is a possible culprit. My question now is what is "full throttle"? If the switch is...
• Idle stabilization control question
  Historical mailing list - Tim Marciniak
  Fri, 9 Mar 2007 17:03:26 -0600
  ...and checked throttle position switch -cleaned idle stabilzation control valve with carb cleaner and verified that its humming away. -cleaned throttle valve -new O2...
• Re: Bouncing idle......
  Historical mailing list
  Fri, 11 Feb 2000 08:45:16 EST
  ...Bad idle position switch (located on the throttle). Check this per Bentley manual. 2. Bad idle stabilizer unit (replace with a known good unit...