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Date:         Sat, 23 Mar 2013 12:50:13 -0700
Reply-To:     Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject:      Re: cold start
Comments: To: Dan Andrews <devilish.dan@GMAIL.COM>
In-Reply-To:  <B7C42097-4D0F-4523-BE65-FE2B8CAEB521@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

HI Finn, Sounds very much like the Idle Air Valve and it's Control Unit may not be doing much. First ...make sure the throttle switch is making contact at idle. I commonly find them not making contact. that switch is adjustable via an excentric and two allenscrews.. one loosens the switch plate so it can be moved by the other allen screw....the eccentricone. Often the adjustment can't be accommplished that way anywaydue to wear. In that case I have to take the throttle body off and tweak/bent the little arm that operates the micro switch. Makesure you can hear the switch clicking off/on just off idle. You want that point to be very close t zero throttle .. if it's too far above zero throttle, you can get jerky operation at very low throttle angles .

And now I see.. Temp Sensor II is called Temp22 .. I don't see how that is going to help people much who are trying to learn all this waterboxer tech stuff. Let's just call it the twenty-two sensor from now on, just to increase confusion.

Generally Finn.. for something like this symptom .. start at idle swtich making contact when it should.. make sure timing is not too advanced , and checking Temp Sensor II , with ohm meter is always agood thing to do. Very important input. The worst one I hvae seen was fine when cold, and wonky when hot.

scott www.turbovans.com

On 3/23/2013 12:06 PM, Dan Andrews wrote: > Are your plugs correctly gapped? > > Sent from my iPhone > > On 24/03/2013, at 12:25 AM, Dennis Haynes <d23haynes57@HOTMAIL.COM> wrote: > >> Temp 2 sensor and idle speed controller (assuming 2.1L). As for grounds the >> ring terminals can be clean and tight but wires can be broken inside the >> insulation and the wire-wire crimp connection can be corroded enough to be a >> problem. The idle speed controller and ECU both use the temp 22 sensor. Both >> go to one side of the sensor and the sensor sinks the current to ground. Any >> bad connection confuses both. That is why I suggest troubleshooting taking >> measurments before moving stuff. Only way to know what was wrong and what >> actually fixed a problem. >> >> Dennis >> >> -----Original Message----- >> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of >> Finn Runyon >> Sent: Saturday, March 23, 2013 8:57 AM >> To: vanagon@GERRY.VANAGON.COM >> Subject: cold start >> >> I have just returned from a successful post re-build road trip with 1400 >> miles on the clock. My only issue seems to be a hard cold start issue. >> The engine will fire right up, stall and then will require a bit of gas to >> get it going again. After it is warmed up it runs like a champ. Everything >> is new on this engine. I did a complete tear down, all bearing, seals, new >> AA 95.5mm pistons and jugs, remanufactured Go Westy heads, all new sensors, >> exhaust, cat, o2 sensor... The grounds are all clean and tight, so I am >> stumped on the cold start issue. Any ideas on where I should be searching? >> >> Thanks, >> Finn Runyon >> Taos, NM >> 87 Westy Pooh >> 89 Westy Roo


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