Date: Thu, 7 Jan 2010 14:26:20 -0800
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: 1.9 engine HELP!!!
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
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my 'snap thoughts' go to Air Intake Boot ( make sure it's not split or
cracked, doesn't happen too often, but it does happen )
and Temp Sensor II,
and always check throttle switch function. I find those 'off' at idle all
the time.
and generally, to make any waterboxer run right again, I end up checking all
the specs - oxygen sensor output, idle switch,
temp sensor, ignition timing and so on. Occasionally I find truly worn
parts, like ancient or leaking spark plug wires. Mostly I find things out of
spec, and the one part I find actually 'worn out' and not working is oxygen
sensors.
and your symptom does sound like an AFM, but your tried a known good one,
which leads my mind to the air intake boot.
And intake air leaks, mostly those don't happen much, but I had one vanagon
that I found about 8 tiny intake air leaks on, which all added up to not
responding well to the throttle.
Muffler, cat, fuel filter, fuel pump, and the fuel Itself all need to be
considered of course.
For sure your symptom sounds like the electronics are not reading the air
flow correctly. Check that boot carefully. You can get a situation where
under or over a certain torque level a split is pushed closed by engine
movement, and it only acts up at 'just that one spot.' I'd start there.
good luck !
Scott
www.turbovans.com
----- Original Message -----
From: "Danny C." <bruiserbabie@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, January 06, 2010 6:47 PM
Subject: 1.9 engine HELP!!!
· So I have been driving my 1984 westy Automatic vanagon and have been
experiencing some small issues. This is what happens- There are 2 different
ways this happens. The first- When driving the van on the freeway going
around 60mph on flat surface with the pedal pushed down about 30% it starts
to cut out very slightly. It does not stall the engine but there is a slight
miss like it is running out of fuel. Now here is the tricky part, if I press
the pedal down just a hair, say to 35% it goes away, or if I let off the
pedal just a hair to 25% it goes away. Now it does not always do it but it
does seem to be getting worse. (Happening more often) Now for the second
problem- So if I stop at a stop sign or stop light and take off if I have my
pedal at the 30% point it does the same thing, it feels like it is bogging
down, now if I start off with the pedal at 35% or more it does not happen or
if I press the pedal 25% or less it wont happen. Now I
have a friend with a great running 1.9 vanagon and swapped Air flow meters
and the problem was still there, so Im sure its not the AFM. Let me know if
any of you have experienced this problem and what steps you took to resolve
the problem.
Thanks Danny
Danny C.
'84 Westy (Vanny)
'90 Jeep Cherokee 4x4
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