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Date:         Thu, 27 Nov 2008 07:16:45 -0500
Reply-To:     Allan Streib <streib@CS.INDIANA.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Allan Streib <streib@CS.INDIANA.EDU>
Subject:      Re: Hesitation, bucking,
              rough idle then died. The paranoia begins...
Comments: To: Mark A Kippert <vanagon@KIPPERT.COM>
In-Reply-To:  <F5845169-B976-48DF-9EA3-B34F256AD2A0@kippert.com> (Mark A.
              Kippert's message of "Wed\, 26 Nov 2008 21\:53\:08 -0500")
Content-Type: text/plain; charset=us-ascii

I don't know what the cause is, but it sounds exactly like what has started happening in my '91 after it's warmed up, then I stop somewhere for a short time (15 - 30 minutes).

It's almost like the ECU is not handling the "warm but not fully warm" condition properly. In the summer I was having a much more serious case of these symptoms (i.e. the low power/hesitation/stalling would last more than just a few seconds). I replaced my "Temp II" sensor which seemed to completely cure the problem, but now it seems to be returning or something else with similar symptoms is going on.

Allan -- 1991 Vanagon GL

Mark A Kippert <vanagon@KIPPERT.COM> writes:

> Time for the newbie's first issue :^) > > My Vanagon ('86 GL) has been running just fine for the few short trips > I've made around the neighborhood until this morning, when I took a 30 > mile round trip, mostly on the highway. I stopped at a Volvo dealer to > pick up a part (sigh, another project). Upon leaving I started the > van, backed out of the parking space, started to pull away and > experienced some bucking. Gave it more gas and the bucking stop but > had practically no power. Gave it more gas (about half throttle) at > which it continued to bog down and then died. My first thought was > that I remembered reading about a similar problem on the list. The > idle control valve came to mind. > > Anyhow, I turned the key off for a few seconds and then restarted the > engine. Varoom, it fired right up, no hesitation, no bucking, no > nothing. I drove away without a hitch. !?!?!?!? Is this a lone > incident? A quirk? Or should I expect it to worsen? (the later I think). > > One more thing. As I'm driving home on the highway, averaging 60-65 > MPH, I notice a burp, or blip. It was as if someone flipped a switch > off, then back on very quickly. It seemed to happen only under mild > acceleration as I would compensate to keep the van at a consistent > speed. > > Do these sound like symptoms of the same problem, or two separate > issues? > > -Mark

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