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Date:         Sat, 23 Dec 2017 09:12:46 -0800
Reply-To:     Don Hanson <dhanson928@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Don Hanson <dhanson928@GMAIL.COM>
Subject:      Re: occasional hesitation
Comments: To: Mark McCulley <mark.mcculley@gmail.com>
In-Reply-To:  <CAKbau50XgFJr73C+w=8g5Si34RkB3BDKS5J-BeSZzvCM4h7Q4w@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

I'll suggest a couple of bottles of dry gas, given your location and you came from the Northwest, right?

On Dec 23, 2017 7:51 AM, "Mark McCulley" <mark.mcculley@gmail.com> wrote:

> I'm on a road trip for the holidays, van has been mostly running great but > have had some intermittent episodes of roughness. Hoping to get some > suggestions for things to check when I have an opportunity to do so (single > digit temps today, no garage). > > First noticed on beginning of second day, leaving Missoula, just a couple > of hesitations when accelerating onto the freeway on ramp. As long as I was > holding at steady cruising speed, very smooth but if I let off the gas for > any reason, then hesitations again. > > I noticed the symptons again yesterday, this time mostly when changing > gears. Smells like it's running rich. Come to think of it I noticed that > smell a few weeks before setting out, well before I noticed any > hesitations. > > - The first thing that comes to mind is the TPS, I will check that. > - I have spare distributor cap and rotor, but only 7K miles on the existing > ones. > - I have spare plugs, 17K on the existing ones (W7DTC). Inspected 7K miles > ago and looked fine. > - I have the AFM harness with the capacitor, and have never had a problem > with Vanagon syndrome. > > It probably wouldn't hurt to change all those ignition components... > > I'm a bit suspicious of the O2 sensor, is there an easy way to confirm if > it's OK? What does ECU do when O2 sensor is unplugged? > > Thanks in advance for any suggestions. > > -Mark > 87 syncro Westy >


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