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 Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay> |
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