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Registered User
Join Date: Nov 2001
Location: Londonderry NH
Posts: 783
944S2 power flux

Recently my friends 1989 944S2 was loosing power while cruising. So I suggested it might be the throttle position switch.

He replaced it with a new one and the problem went away.

Less than 1K miles later it is back.

Any suggestions?

Basically this... driving along on the highway and the car will fall back to as if your foot was off the throttle... then tap the pedal with your toe a couple of times and she comes back.

Sounds like TPS to me.

But suggestions ?

82 924 restored, 83 944 parting out
In search of 1988 or newer nice 944.
Old 07-28-2004, 09:16 AM
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..P ..P is offline
Registered User
Join Date: Oct 2003
Posts: 455
Hopefully he's not running a K&N filter, notorious for no addl power, added dirt, and oiling down the MAF systems and causing problems, sometimes in the hundreds of dollars.

1983 928S 5-speed, 1984 944, 1990 944S2 Cabriolet
My other car is a Chris Craft Commander
Old 07-29-2004, 07:55 AM
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Registered User
Join Date: Feb 2000
Location: Kingsport, TN
Posts: 2,925
I've had two KN's on my 32v Mercedes for 115K miles. No problem.
I've had a KN on my 944T for 55K miles, no problem. Both have MAF's.

Just don't dump a quart of oil on it when servicing. If a little lubrication is good, more is not necessarily better. Some things are not for the ham fisted.
1986 951
2002 SLK32 AMG
1987 328GTS
2011 528i
Old 07-29-2004, 08:16 AM
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