Date: Thu, 21 Aug 2014 13:07:36 -0300
Reply-To: Roy Nicholl <RNicholl@NBNET.NB.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Roy Nicholl <RNicholl@NBNET.NB.CA>
Subject: Re: Now it starts: racing idle
In-Reply-To: <1408636154.7770.YahooMailNeo@web140803.mail.bf1.yahoo.com>
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Zoran,
Thanks for the feedback.
I did check the position sensor and it appears to be closing ... this is part of the I am not able to reproduce the behaviour in the driveway ... what I need to do is get out and check it the next time the idle races to 2K RPM.
I just found it peculiar that putting a little load on the engine would cause it to return to normal idle and thought maybe the act of loading the engine/tranny was shifting things enough to ease off the throttle ... of course, I'm not back there to observe what is happening when I take those actions.
Roy
On 21-Aug-2014, at 12:49, Zoran Mladen wrote:
> That seems a little excessive. Mounts are likely culprit. I doubt that is your issue... First I would check the throttle position sensor to ensure it is closing properly every time. If it does not and the sensor does not recognize the throttle body is closed...you will experience these symptoms.
>
> Z
>
>
> On Thursday, August 21, 2014 9:26 AM, Roy Nicholl <RNicholl@NBNET.NB.CA> wrote:
>
>
> Zoran:
>
> Fore and aft (predominately)
>
> I forgot to mention, the Hyena is an '88 Westfalia with a 2.1 WBX.
>
> On 21-Aug-2014, at 12:21, Zoran Mladen wrote:
>
> > What do you mean movement in "shift level"? Back and forth? Left and right? Up and down?
> >
> >
> > On Thursday, August 21, 2014 9:18 AM, Roy Nicholl <RNicholl@NBNET.NB.CA> wrote:
> >
> >
> >
> > After signing praises for the Hyena yesterday for its 5800km journey w/o incident, I went to drive it this morning for the fist time since our return. After I was on the road for 10-minutes, I had to stop for construction. While stopped, the idle climbed to ~2000 RPM and pegged there. I tapped the fuel feed pedal and it momentarily dropped to normal and then climbed again. I tried tapping the pedal a few additional times and had the same result. Interestingly, when I let the clutch out a little and put a but of load on the engine, idle dropped to normal and stayed there .... until the next time I stopped.
> >
> > This process repeated itself twice on the way home, but there were several time when I stopped that it did not happen.
> >
> > I have been unsuccessful trying to reproduce the symptom while sitting in the drive. I have checked and lubed the throttle cable, but do not think that is the cause.
> >
> > I have an odd theory I wanted to run past the list to see if I am out to lunch. Is it possible that I have loose/worn transmission or engine mounts which are allowing enough play to affect the throttle at idle? The reason I ask is that when driving (even on our trip home) in fourth gear, I can feel/view ~1.5-2" of movement in the shift level when I take my foot off the fuel feed while driving. In my '66 Westy there was always movement - greater than in a car due to the length of the shift linkage and shifter - but not this much (I realize this is an apples and pomegranates comparison, but it's my only point of reference ... other than the test drives I conducted in other Vanagons).
> >
> > Is this a feasible explanation for my problem, or am I headed in the wrong direction?
> >
> > Roy
>
>
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