Jim,

Did you do a compression test?  Eliminate possibility of leaky intake valve?

Tim Marciniak

At 12:45 PM -0800 3/11/99, Jim Arnott wrote:
>From: Jim Arnott <jrasite@eoni.com>
>
>Another one from the international Automotive Technician's Network.  Any
>digifant experts want to take a stab at it?  Please reply to Walter, not me!
>
>Jim Arnott
>WetWesties
>Union, OR
>
>1987 Volkswagen Vanagon 2.1 L
>
>Trans:         Automatic
>Mileage:       125,000 miles
>VIN:           WV2YB025XHH059786
>Fuel:          EFI
>Emissions:     US Fed
>
>Symptoms:      Excessive Emissions, Poor Idle Quality,
>           Hesitation, Stall, Poor Fuel Economy
>Occurs:        Always
>
>____________________________________________________________
>
>I have changed the coolant sensor, O2 sensor, MAF with new
>unit. I leaked tested all injectors, found all to be okay,
>pulsated all injectors, 2 psi drop on all injectors, fuel
>pressure regulator is not leaking, found no vacuum leaks,
>changed ecu with known good unit out of another van and
>both computers were same in my van and both worked good in
>another van. This van is running extremely rich any ideas
>would be greatly appreciated.
>
>Thank you
>
>PS Idle control does not seem to be working and Idle air by
>pass motor was replaced with no change in idle quality.
>
>
>Walter Leblanc
>mailto:walter@flinet.com
>Owner/Technician
>Ahrens Auto Service
>Boynton Beach, Florida, USA
>
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