Date: Wed, 27 Mar 2013 21:23:11 -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: Choked starting?
In-Reply-To: <CAMOTHR4v+AnP+gVNry3=0urDyb+t36SBX8kzg49TD5PMxwFSBQ@mail.gmail.com>
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I would start on it like this .........do all these checks...
make sure throttle switch is making contact at idle. I would guestimate
that about 60 % of 2.1 throttle body switches do not these days, due to
wear. I have to fix most of them that I see.
Make sure timing is not too advanced.
Check Temp Sensor II resistance,
Consider whether 02 sensor coax to the ecu is shorted.
( try it with 02 sensor unplugged )
Always consider vacuum leaks. You could have a big split in your air
boot for example..doesn't happen very often, but is the kind of
thingthat can cause weird symptoms that people don't think to look
forsometimes.
Work to determine if your Air Idle Valve is working and the Control Unit
for it is good.
It's nice to know that compression is at least fairly decent.
Always consider and check and clean ground connections everywhere.
If spark plug wires are ancient ...test or replace those.
On waterboxer engines that have Bosch tune up parts on them, I find that
those parts barely wear. If they are tired of course, their tired. ..
but the tune up parts are 'usually not it' . Gotta at least inspect
the spark plugs ..if they are worn badly ..
replace, if wet, means theigntion is not working strongly like it should.
Consider tired injectors and weak or poor spray pattern, I seldom find
that, but I do recommend a good fuel treatment now and then like SeaFoam.
this is how it should start ..
just get in, don't touch anything except to make sure it's in neutral. (
if manual trans, do not hold clutch down )
turn keyto on, listen for fuel pump to run, then shut off, while you
confirm warning lights are working.
Turn the key further to 'start.'
It should jump right to a smooth steady idle ..
if it doesn't ..things are not right.
Any time it doesn't do that ...it should be worked on.
These engines can work fairly well with lots of things out of whack on
them.
It's important to keep up with them ...
if they don't start like that ...they need good smart careful workon them.
resist the urge to think 'it's a component' .sometimes it is of course..
but so often it's a matter of cleaning, adjusting, finding details not
working right.
I would get after that throttle switch first thing !
for sure, 'It is just a blockage or leakage of fluids or electrons' ..
the trick is getting someone competent to find and fix them all !
scott
www.turbovans.com
On 3/27/2013 4:44 PM, Michael Sullivan wrote:
> I know I haven't bugged ya'll on awhile but here goes.
> Was thinking of selling Gringo for reasons not to be disclosed. Buyer
> drove it 30 miles...I drove it another 30 and then cleaned him out and left
> him at the buyer to take to mechanic. Van would not STAY started and I
> pulled the filter and gas flowing front to back ok. Had to rev it to
> reverse and then died in drive. Restarted and once moving...all is ok. Ok
> at stop light too.
> Advice needed. Fuel filter seems ok...pump is running...gas is ok. I
> think maybe timing is off. I also think Gringo does not want to be
> sold...spooky.
> Anyway I will start with that and rely on my friends to help me diagnose.
> Will prob not sell now. Voodoo and whatnot. Thanks in advance.
>
> Michael Sullivan 91 GL
>
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