Had this problem with my '84. Ran OK but gas mileage was miserable. It was
the fuel pressure regulator.

HTH,
John Flaherty
Portland, Maine
'84 GL

----- Original Message -----
From: "Chad G" <groch@WORLDCHAT.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, June 28, 2001 9:35 AM
Subject: Fuel Mileage Gone to Hell!!!

> I've been strugling to figure out my fuel mileage woes. And a idle that
> shoots up to 3000rpm at stop lights Here is what I've had done thus
far....
>
> Mechanic #1   Checked for vacuum leaks and found that the rubber boot from
> the AFM to throttle housing was cracked
>                         I replaced it along with the fuel
filter.......cost
> $200CDN total.......result 10mpg
>
> Mechanic #2 (VW dealer 1000km from where I live)  Engine started
misfiring,
> hesitating, and struggling to climb every hill it
> went up...........I disconnected 02 sensor and it ran smooth but mileage
was
> crap
>                         Took it to VW and they said the wiring to my fuel
> injectors was corroded as was the grounds etc...
>                         they also said my Temp II was shot (it was new in
> February so it was waranty) as was my O2 sensor so it
> was also replaced. This all seemed legit to me   cost $490......result
> 12mpg, the van did run well and idled fine
>                         but the fuel mileage is f'ed and there still is a
> heavy exhaust smell
>
> ANY IDEAS WHAT I SHOULD DO NEXT
>
> Chad 85GL van
>