Date:         Sun, 12 Apr 2015 09:59:03 -0700
Reply-To:     Neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Neil N <musomuso@GMAIL.COM>
Subject:      Re: Idle Stabilizer System Delete. Cause Bog Off Idle?
Comments: To: Dennis Haynes <d23haynes57@hotmail.com>
In-Reply-To:  <BAY405-EAS330F4E4FC779795A111FED6A0F80@phx.gbl>
Content-Type: text/plain; charset=UTF-8

Thanks Dennis.

> Having the idle control unit unplugged has an effect on the temp 2 circuit.
> That sensor is shared with the ECU and ICU.

Yes. I noticed that and wondered of it. (and throttle switch)
So I should leave the ICU plugged in?

Fuel pressure and delivery are fine but I wonder that if over time,
dirt etc. blocks flow from fuel tank as fuel is sucked out.
re: AFM comment. I played around with my AFM.
Currently, I've re-adjusted the wiper as best i can and repositioned
board so wiper contacts board at or close to the OEM position. The tweaks
I'd made caused what I assume is aggressive wear in a short time.
Image of same:  http://tinyurl.com/ogdga9m
Injector spray pattern is ok, but I have no idea what condition
head valves etc are in.

On 4/12/15, Dennis Haynes <d23haynes57@hotmail.com> wrote:
> Bogs off idle are often a fuel delivery or mechanical problem. Excessive
> valve deposits, poor injector spray patterns and even worn valves/guides are
> common culprits. Unplugging the throttle switch will completely remove that
> as possible issue as the only time it will cause a problem is if it does not
> open fast enough when the throttle is opened causing the system to go into
> fuel cut off while trying to accelerate. In my years of repairing Vanagons I
> have only replaced three air flow meters and all of them were tampered with.
> Having the idle control unit unplugged has an effect on the temp 2 circuit.
> That sensor is shared with the ECU and ICU.
>
> Dennis.
>
>



--
Neil n

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