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1996 GMC Yukon P0151 P0131 P0300 - Engine Dies on Acceleration, Flooding, and Pulsating While Driving

Model: 1996 GMC Yukon Fault Code: P0131 Posted: 2011-01-24 13:56

My 1996 GMC Yukon is showing fault codes P0151, P0131, and P0300. When I accelerate, the engine floods and dies. While driving, it suddenly shuts off and requires me to stop and restart the vehicle before it will run again. Over the past two days, I've noticed a pulsating sensation while driving—this occurred after driving through deep snow. I have already replaced the oxygen sensors (4), catalytic converter, MAF sensor, air filter, fuel pump (twice), and fuel filter. I also tightened the exhaust manifold connection, which resolved the lean-related codes. A pinched wire in one of the fuel injectors was identified and repaired. There is a known radiator leak that I need to fix, but I'm running out of funds and currently only add antifreeze when it gets low. Despite these efforts, the issue persists. Any advice on diagnosing or fixing this would be greatly appreciated.

Related fault codes
P0131P0151P0300
Comments (3)
Anonymous 2011-01-24 18:51

Is the fuel pressure dropping when the ignition key is turned off? This could indicate a faulty fuel pump or regulator, especially if the engine floods and dies during acceleration.

Anonymous 2011-01-25 07:19

I'm not sure what 'bleeding off' means in this context. I'm relatively new to vehicle repairs since my partner has been diagnosed with cancer and can't assist with maintenance. I do have a diagnostic scanner, and I've noticed that when driving uphill—even a slight incline—the short-term fuel trim reads 50%. When the engine cuts out, the trim resets to 0% even after giving it throttle.

Anonymous 2011-01-26 12:10

If your short-term fuel trim is consistently at 50%, that suggests a significant fuel delivery issue. I'd recommend taking the vehicle to a professional for a proper fuel pressure test. If the reading is accurate, the problem may be obvious—such as a fuel system leak or misfiring injectors—and the engine would likely smell like gasoline when running.