I have a 2001 chevy suburban 5.3. when i bought it i just oils change,new battery,spark plugs and wires still runs rough as p0300 what is reason?
I have a 2001 chevy suburban 5.3. when i bought it i just oils change,new battery,spark plugs and wires still runs rough as p0300 what is reason? i bought a suburban a wreck and it been sit for 3 years. and it runs fine and no ticking or smoke at all only one thing it runs rough as when drive weak power. also im not sure if it from old gas cause when i bought it it almost full and i smell the gas seem almost normal gas it not like very old gas. need help
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Re: i have a 2001 chevy suburban 5.3. when i bought it i...
This is a random misfire of all the engine cylinders, the causes are many and each must be diagnosed to fix the problem. If you click this LINK you will go to the best info I know of for diagnosing the problem.
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There could be too many reasons. Were the plugs gapped
correctly? Are you sure that the wires are correct in order? If so, the next
thing you should try is to reset the computer. Sometimes it is possible for the
computer to read the old spark plug values even if you replace with new ones.
Reset the computer by disconnecting the battery for 10-15 minutes. The reset
may cause the computer to take time gathering new spark plug values until few
duty cycles. I hope this information helps you!
These codes are for random misfires,but without the car actually running rough the best advice i can give you is to try a new set of spark plugs and spark plug wires,they may be failing randomly and then working again fast enough to set codes but are noticeable to you.
P0300 is multiple misfires.
P0171 is lean burn on left bank 1 means drivers side
02 sensor is faulty. Your vehicle is over fuelling that is why your are getting P0300 code and the rotten egg smell. Good idea is to replace both 02 sensors.
I had the same issue with my venture. It turned out to be the number 5 plug wire, backside of engine ended up breaking out of the plug carrier and burning in half on the manifold. Your best bet is to trace all the wires to start off with and change the plugs. If that doesn't help, it may be internal. Good luck