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Oil pressure concerns on '91 200TQ

Al Youngwerth <alberty@apexxtech.com> wrote:

>Now my problem: my wife's '91 200TQ (150K miles) has been occasionally
>flashing the oil pressure warning light on the dash over the past few
>weeks. Sometimes at idle when the gauge reads 1.5bar, sometimes at
>80mph when the gauge reads 5 bar.
>Any BTDT on this one?

Yes, I have on my 200.

> Are there more than one oil pressure sending units on
>this car (to explain why the idiot display doesn't always seem to agree
>with the analog gauge)?

Trust your analogue gauge. The idiot light sender is kaput.
On all 200 the idiot light sender and the analogue gauge sender
are integrated into one unit, $64 last time I bought it. Replace

> Is the oil pump or the oil pressure sending unit a common failure on >these cars?

No for the former, yes for the latter. 
Igor Kessel
'89 200TQ -- 18psi (TAP)
'98 A4TQ -- mostly stock
Philadelphia, PA