So it seems I'm not too far off the mark here. This fellow
"successfully" installed a VW MAF sensor in the MAF body on his Land
Rover:

http://forum.expeditionportal.com/threads/31752-MAF-Sensor-Repair-In-Depth

"I picked up a sensor from a local independent VW specialist. It's
from a 2000 Golf GL 2.0L Gas. VW PN: 06A 906 461A, Bosch PN 0 280 218
002, it has the Bosch OOC 2G2 032 sensor insert which can replace the
029 insert in our sensor.  .......  I removed my sensor insert from
the LR housing and tossed the insert in the bin. Removed the insert
from the VW housing, and tossed the housing in the bin. Insert the VW
insert into the LR housing and screw it down. The hardest part is the
tamper proof screws they use. 5 point Torx-like tips with the pin in
the middle. Luckily, you can turn them just using pliers on the heads
of the bolts! The part is an EXACT match. Even the plug fits well. It
doesn't have the positive locking tabs, but it's held secure. I could
tie strap it but...

Fire the truck up, code cleared and has not come back after a month of
use. I've also monitored the long term fuel trims in the ECU with no
signs of trouble. I'm showing -7% and -6% on the left and right banks.
Perfectly in range."

On 6/30/17, Neil N <musomuso@gmail.com> wrote:

> This is a very broad question, but of the 4 pin Bosch OBD1 (possibly
> OBD2) MAF, do they all work in the same manner? i.e. is the internal
> circuitry, voltage spec supplied to the part, the same?
>
> I'm looking at a $400 Volvo 850. It actually drives "ok". Needs MAF
> (poor idle) ......
>
> I have to wonder if a MAF from an OBD1 Jetta might work with this Volvo.

--
Neil n

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