What are you using for igniton? Maybe you are not getting enough spark while
cranking due to the starter loading down the battery.

Dennis

>From: maxjoyce@IPA.NET
>Reply-To: maxjoyce@IPA.NET
>To: vanagon@GERRY.VANAGON.COM
>Subject: 90GL cold start trouble Part II/UPDATE
>Date: Sat, 20 Oct 2007 16:10:42 -0500
>
>Folks:  Done some research through the Haltech website and some serious
>head scratching and here's what I've ascertained.
>
>1.  The van starts hardest after an overnight rest, nigh on impossible this
>past week.
>2.  Rainy weather seems to make it harder to start.
>3. Roll starting it in the morning, it fires right up.
>
>Initially, I thought like several of you that the engine wasn't getting gas
>from whatever cold start program Haltech has in there.  Once the engine
>starts, that's not the case; it runs fine.  Only sitting in the work
>parking lot all day seems to be about the length of time necessary for it
>to not start again.  2-3 hours breaks between startings aren't affected.
>Could there be enough residual gas vapor in the intake maifold/comustion
>chamber in those shorter stops to eliminate the "need" for the cold start
>program resulting in a fairly easy start?  Iguess the ambient air
>temperature sensor in the air cleaner could also be at fault.
>\
>I'm thinking that maybe(and confirmed by the Haltech troublshooting guide)
>that there might be some sort of signal cutting out to the Haltech ECU when
>the starter is engaged.  I doubt seriously that that X relay in the fuse
>block could be the cause, but something is making it nearly impossible for
>it to start after 7-10 hours of sitting while the starter is engaged.  The
>only flaw in that thinking is that last winter when it would only balk at
>starting when it got below  10 degrees F, it is now exhibiting those same
>symptoms at 50 and 60 degrees F.  If the Hall sender were going bad, it
>wouldn't run well period, not just at start up.  My cat housing has nothing
>in it except the O2 sensor.  Anyone that curious about Haltech can go to
>their website(  www.haltech.com  )  and click on support or downloads and
>see what's shakin'
>
>What sort of wiring or electrical issues do I need to look out for here if
>that is indeed the problem?
>
>Thanks
>
>DM&FS