Question about Cars & Trucks
Hello i have a daewoo nubira 2001 sx st the car has po300 and po172 ive set my Obd scanner on and Got live data and i Can see it Runs to Lean. It has a rough idle. Ive tryed cleaning agr valve. Clean throttle body. Changed spark plugs. Changed fuel filter. Spaying silicone on spark wires. Notning helped any ideas
P0172 is running too rich, not lean. Was it a typo, or did you really have P0172 (just like my Buick, same two codes [0300, 0172]- and still working on it). Go to the site above and look. (All codes are there for descriptions and diagnosing procedures.)
If it is too lean, possibly a vacuum leak from a bad hose or the intake manifold.
Posted on Feb 09, 2014
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Posted on Jan 02, 2017
SOURCE: 2002 grand prix
It was the Cat. Converter on mine, Don't drive it like that too long as it will send exhaust back through the EGR Valve and burn a hole in the Intake Plenum....
Posted on Jan 31, 2009
try this b4 taking things apart... redexe/wynns fuel additive and using high octane fuel the computer will adjust running accordingly...
Posted on Mar 09, 2010
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