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Date:         Thu, 4 Jan 2018 17:50:34 -0500
Reply-To:     David <fjazzbass@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David <fjazzbass@GMAIL.COM>
Subject:      Re: Intermittent stall while underway...
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <DM3PR20MB0715FD0C0FF0B6DB427E35AAA0190@DM3PR20MB0715.namprd20.prod.outlook.com>
Content-Type: text/plain; charset="UTF-8"

Thanks, Dennis and Ken...

The saga continues- I tried to start the van and it was dead in the water, so I decided to reseat the ignition control module and give it a try- before trying to start it I tried grounding the center pin on the hall sensor plug to see if I got fire- the first time, nothing...every other time it lit right up. Started the van, and it wouldn’t die. Stayed alive for at least half an hour... jiggled wires, etc- nothing would kill it...

I’m thankful, but tentative.

What thinks the listers? I’d lean toward ignition module / coil... since it gave the initial no spark on the first connection to hall sensor...

Thanks all...

Dave

On Monday, January 1, 2018, Dennis Haynes <d23haynes57@hotmail.com> wrote:

> Having the tach drop to "0" while the engine is still turning is a great > diagnostic observation. Tells you lost something on the primary side. > Ignition switch itself is easily tested and they don’t fail as often as > some would lead us to believe. Anyway. If the turn the ignition on and the > red light comes on, the switch is good. The light should stay on as you > further turn the key to the start positon. I have seen the switches fail in > a way that the ignition power drops out between start and run, or even in > the full start positon. > > There are a number of connection points between the ignition switch and > the connection to the coil, ignition module, hall sensor. So power on needs > to be confirmed at those points. If you can repeat the failure based on run > time or temperature the likely culprits are usually the ignition module or > the hall sensor in the distributor. > > Dennis > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf > Of David > Sent: Monday, January 1, 2018 9:13 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Intermittent stall while underway... > > HAPPY NEW YEAR all... hoping you all are having a wonderful new year so > far... > > I was on the way to pick up some new year's party supplies and drop off > some stuff at goodwill when my engine decided to shut off while underway... > tach dropped to 0 even though engine was still spinning... Got the van to > the side of the road, messed around with some connections and she started > right back again... > > Ran for another 5 minutes or so, same thing... swapped out ignition > switches (I have 2 spares) and same no start issue... waited another 5 mins > or so and it started up again... > > Rinse and repeat... until I bypassed my goodwill trip and got her home... > > I previously had a no-start condition similarly that pointed to the > alternator that was not putting out all of the voltage I thought it should > have... coil wasn't firing and battery voltage was pretty low... swapped > out the alternator with a known good one and was back in business... > > Where to start on this? Since the issue is intermittent, I'm apprehensive > to just take it on a trip to test it out. I'm thinking hall sensor could be > an issue because of the lack of tach reading when the issue occurs... any > other ideas? > > I've got a spare coil I could swap in as well... > > Thanks in advance for any hints or suggestions.... I may just have to > bring the test light along with me when the issue occurs to see if I can > get the coil to fire up when the condition exists.. other than that...... > > Dave > 85 1.9 GL manual naughty bus... >


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