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 '88 Westy http://tinyurl.com/c8rlw6p '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ Vanagon VAG *Gas* inline-VR Engine Swap Group: |
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