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P0171 Code + Solution 850 1996

uid 14317's pic
posted by  Most Unusual on  Mon Dec 5 23:48 CST 2011
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last visit: Tue Jan 7 20:53 CST 2014
[RELATED]

1996 850 Turbo Wagon -- 205K miles

I got an engine light 1 week ago. Crap! I used my basic OBDII unit to check it out. I Googled the code: Fuel Trim System Too Lean.

Many sites said to check:

Fuel pressure, Map sensor, poor O2S or MAP sensor connection at the ECM.
Inspect the harness connectors for:
Improper mating
Damaged terminals
Broken locks
Improperly formed or
Backed-out terminals
Poor terminal-to-wire connection

yada yada yada...

Do yourself a favor...check the intake hoses for leaks first. The short, upper intake hose (intercooler to manifold) was soft from oil exposure and age...popped like a balloon. Performed a spot repair, then ordered new hoses.

Happy motoring!

--
'00 S80 T-6, '96 850 Turbo Wagon, '94 740 Sedan, '95 960 Sedan - SOLD, '92 960 Wagon - Dead, '01 V70 Wagon - SOLD,







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