Vanagon EuroVan
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Date:         Thu, 11 Sep 2014 23:19:26 -0700
Reply-To:     Dick Wong <sailingfc@DSLEXTREME.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dick Wong <sailingfc@DSLEXTREME.COM>
Subject:      Re: Engine miss
Comments: To: Neil N <musomuso@gmail.com>
In-Reply-To:  <CAB2RwfjGwPzdE7YMK=chruEOaE6ZtD6e0xY7i0azphnyDXqZTA@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

No AFM. Vacuum line to the ECM & fuel pressure regulator, intake air temp sensor and throttle position sensor. I copied the wiring when rebuilding the harness (which was not the same as the Bentley schematic).

-Dick-

-----Original Message----- From: Neil N [mailto:musomuso@gmail.com] Sent: Thursday, September 11, 2014 8:53 PM To: Dick Wong Cc: vanagon@gerry.vanagon.com Subject: Re: Engine miss

Does this version Digifant use an AFM? If so....

Faulty portion of resistive strip in the AFM?

tencentlife on thesamba.com posted a great simple check for AFM voltage dropouts while the engine is running.

Neil.

On 9/10/14, Dick Wong <sailingfc@dslextreme.com> wrote:

> Now that Blaze is back on the road, I get a miss/hiccup when moving > with no load on the engine. I've only noticed this in fourth gear and

> have not tried it in any other gear yet. > > Typical situation: In fourth gear, level ground, steady speed. While > in this mode, the engine will suddenly lose power for several seconds,

> then recover. It's not a sputter, it's a sudden loss. No dash lights > illuminate, tach is steady, no CEL. All this happens in the 1800 to > 2800 rpm range (approximately). I've never experienced this before. > When accelerating or decelerating through this rpm range, it never > happens, only when at a steady speed. At freeway speeds, 3500 - 4500 > rpm, I don't see this issue. > > Digifant (023906023), 2.5L, 5 cylinder, new Bosch plug wires, new > Bosch dist. cap, new Bosch rotor. > > Since this is basically a Eurovan setup, that's my next stop. > > Any ideas?

-- Neil n

Blog: tubaneil.blogspot.ca

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'81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/

Vanagon VAG *Gas* inline-VR Engine Swap Group:

http://tinyurl.com/d7gd5ej


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