Date:         Sat, 7 Jan 1995 10:04:55 -0800 (PST)
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Wes Neuenschwander <wesn@eskimo.com>
Subject:      Re: HELP! FI Fuel Supply(?) Problems with 75 Westy in Phoenix

On Thu, 5 Jan 1995 jds@media.mit.edu wrote:

> Date: Thu, 5 Jan 95 16:30:24 CST
> From: jds@media.mit.edu
> To: Multiple recipients of list <vanagon@lenti.med.umn.edu>
> Subject: HELP! FI Fuel Supply(?) Problems with 75 Westy in Phoenix
> 
> 
>   I'm pretty much stranded in Phoenix due to this little
> problem.  The current situation is that when I cruise down
> the highway all is fine, but when I put a bit of a load on
> the motor it begins to crap out.  I have to ease back on
> the peddle to keep the engine running.  Generally at the
> top of a hill i'm doing between 25-35.  This I can almost
> deal with.  The problem arises when I exit the highway.
> When I get to the stop, the engine dies.  If I wait from
> 10 minutes to 2 hours I can start it again.  This is not
> good.  I can crank all I like but  it doesn't help.
> 
> 
Check out the engine/tranny/chassis ground system - best thing is to 
remove them, scrape the area around the ground screw and under the ground 
screw head and re-tighten them.  There are several of these (I don't 
remember how many) that electrically tie the whole thing together and 
provide a steady ground connection to the FI system.  When they become 
loose or corroded the additional electrical resistance causes a 
fluctuation in the ground potential at the FI computer, which can appear 
as a signal, causing the FI computer to 'miscalculate' and improperly 
adjust the mixture.  Also, you might want to check the O2 sensor 
connections and/or the O2 sensor itself.  Both of these problems have 
caused similar conditions for me in the past.

--------------------------------------------
Wes Neuenschwander
Seattle, WA

(wesn@eskimo.com)