John, Had the problem on my 88GL. On top of the engine there is a hose between the crankcase vent tower - and the Air Flow meter (AFM). That hose tends to rot out on the under side. the hose on top looks OK - but underneath it's rotten and prone to leak. Easy fix with a piece of hose from your FLAPS. Even if the hose appears good - if it is soft at all, it should be replaced. Check to see that your O2 sensor is connected. The idle stabilizer valve should be humming as well. The idle stabilizer control is a box just forward of the right hand tail light. These three elements - including the Hall Sender generate signals that fee to the ECU which in turns controls engine rpm, and ignition firing. On 4/23/2014 2:58 PM, John Graham wrote: > I have an '88 Vanagon totally stock 2.1 engine that has served me well for > the past 203,000 miles. Most recent engine repair was to refurbish the > heads about 10,000 miles ago and had been running fine since. > > My recent problem that started this winter is a poor idle condition when > started first thing (i.e. engine is at ambient temp). The engine starts > fine, with idle a little over 1K and idles there for about 20 seconds and > then want to die unless I give it some throttle. If I let it die, it > restarts just fine and runs for the 20 seconds and dies. > > I can drive off at this point without problems because the RPMs are up. My > first stoplight is about a half mile from my house and by the time I reach > that point, the engine will idle - though a little roughly at about 900 > RPMs and by the time I've gone say another mile, it has pretty much settled > down to a normal idle when stopped at a light. > > If I make a quick stop at a store after the engine is warmed up, it > restarts with no startup idle issues. > > So - I suspect something related to a 'cold idle' system. I've recently > changed sparkplugs and airfilter and rotor and cap have less than 5000 > miles; Ignition wires are about a year old. > > I'm open to suggestion for what to try next. I'm fairly handy and of > course have a Bentley manual. > > John Graham > 88 Westy - Charlotte, NC > > -- > <http://johntakesgreatpictures.com> > . > |
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