Question about 2005 Chevrolet Uplander
Replace the oxygen sensors, hose, fuel pump works well, everything seems fine without vacuum, she runs well but the failure continues (runs 15 miles and the light back on) (P0171 code) if you turn off the engine and wait for 5 minutes the engine will not start. Waits for 10-20 minutes there can start the engine.
I'd be more concerned at looking into the fact that it takes a while to cool off in order to start up again. P0171/174 codes mean a lean condition. I'd suspect that you may have a problem with Vapor lock on the one bank, which is causing air to form in the fuel rail on that side. Since air compresses, the fuel pressure doesn't necessarily come up enough to restart the engine until the fuel has cooled down enough to stop boiling. Did this start happening once the weather in your area started getting warmer?
Posted on May 08, 2014
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Posted on Jan 02, 2017
well i would try squirting fuel into the throttle body when it is in its not running mode. if it starts and runs you know the fuel pump is at fault .. or its not getting the right fuel pressure from it..
Posted on Feb 10, 2009
YEAH MAN I KNOW WHAT YOU ME, THOSE DARN COMPUTER ARE WAY TO SMART.. THERES NOTHING WRONG, BUT YOU CAN TAKE THE TRUCK TO A GM DEALER AND THEY CAN FLASH THE COMPTUER, BUT THE ONLY DOWNFALL IS THAT THE CHECK ENGINE LIGHT WILL NEVER WORK AGAIN.. SO ITS YOUR CALL..GOOD LUCK KEITH..
Posted on Mar 12, 2009
Hi! You must be frustrated by now! your code is marking that the O2 sensor is bad in bank 1. Did you replace the O2 sensor that is located before the catalytic converter? The S10 has an O2 sensor specially made for that cat. its about 30$ That would explain for your blackened spark plugs; your pc on the car is asking for more fuel. GOOD LUCK!!
Posted on Apr 29, 2009
SOURCE: 2004 colorado code p0172
check your gas cap. If you fill your gas while the vehicle is running, it will also cause your light to come on. Go to OReilys or Autozone and they will shut it off for free and tell you the problem
Posted on Jul 25, 2009
that car is under warranty for emmision failuare, it a federal law, also you changed wrong sensor poo36 and poo54 mean o2 sensor after the cat-converter is no good not the first one by engine, replace the one after cat and problem will be fixed. good luck.
Posted on Nov 05, 2009
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