Friggin' MFTS...again!

Phil Rose pjrose at
Thu Dec 19 00:38:14 EST 2002

Well count me among those needing to replace the Mult-Malfunction
Temp Sensor (MFTS) at an extrordinary rate. The present (now
defective) sensor was installed in my Lago sedan not more than 6
months ago, IIRC. Yes the connector boot is ventilated. No, there are
no obvious signs of leakage. No, I didn't think I overtightened (who
knows?) Anyway, during the past week I've begun to get those
incessant, spurious "overheat"  warning chimes accompanied by low
boost. All I can say is that it's a good thing gasoline is no longer
30 cents a gallon, or I'd be spending as much on MFTS replacements as
on fuel.

What a rotten situation. The MFTS manufacturer either is not capable
of (or interested in) making a durable sensor, and/or has produced  a
(large?) number of defective ones. Thus we hapless victims just keep
buying them at 40+ bucks a pop. Both my previous MFTS units were
Behr brand. Time for a change (of brands).

I think a consultation with Scott M. might be in order, as he has
given this issue a fair amount of thought and claims to have a supply
of the old 4-pin units (VDO brand). Until I get a new 4-pin MFTS,
I'll just jumper the harness to the MFTS temp-gauge pin (it still
works). I'll disconnect from the other pins. As far as I know, the
other pins supply a ground connection that produces the overheat
warning, boost reduction and disabling of the A/C compressor. As long
as my temp gauge is responding, I think I can get along for a while
without those other "features".


Phil Rose				Rochester, NY USA
'91 200q	(135 Kmiles, Lago blue)
'91 200q   (58 Kmiles, Tornado red)
	mailto:pjrose at

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