Sounds as if your fuel pressure regulator has gone bad. You didn't say what codes the O2 sensors tripped. I would change the regulator before chasing down the sensor code. I hope this helps. Take care.
SOURCE: aurora 1997 i have changed the fuel pump,, fuel filter plugs,
Hi there
sounds like you done allot to this car. did you clean your gas tank? Reason i say this there are times you get bad gas that water with it. and it sounds like you got water in your tank. need to get it out. Try this get some rubbing alcohol and poor it in your tank. It won't hurt it. It will soak up the water that's in your tank. try this and let me know how it goes.
Thank you for writing to fix ya.
Best Regards Richard
Testimonial: "yeah, i did that this morning, the gas tank had a bunch of **** in it, changed fuel filter, tank needed cleaned same prob still thanks though"
SOURCE: 02 gmc sonoma 4.3 engine starts and runs great for
Smell of the oil,to see if the fuel injector(spider)is leaking into the crank case,if so,the intake will have to be removed to repair the problem,oh,and change the oil.
SOURCE: 93 mustang lx turns over
I suggest you check for spark by taking a spark plug wire off one of the spark plugs and using one of your old plugs and crank it over and see, it wouldn't be the first time a module died on a Ford. Plus if you have a fuel pressure tester hook it up and check for proper pressure if no gauge just shoot a couple of squirts of engine start or carb spray in the intake if it starts something wrong with your fuel system recheck wiring conections if you don't hear fuel pump, turn on key from 3 to 5 seconds fuel pump should run to prime fuel rail then stop, if not check fuel system.
SOURCE: running a little rough at
As you mentioned that spark plugs are replaced,so with new spark plugs,this can be fuel related problem.Get the fuel pressure tested.If the pressure checked out low then can be faulty fuel pump and clogged fuel filter.But as you mentioned,that before replacing the parts,it was running rough,as per that clean the MAF sensor and see.The MAF sensor is located on top of the air box, the
black plastic box on the right side of the engine. It is held in place by two
little screws and has a wire harness clipped to it.Remove this sensor and clean it,then reconnect it and checked.
also try spraying some starter fluid in the intake and see.If it starts,then its fuel pressure regulator problem.The fuel is actually not reaching the fuel rail,due to this engine turns over but will not start running,because the fuel is not reaching.
check the FP regulator by pulling off the vacuum hose that goes to it---if fuel dribbles out of there, then the FP regulator is no good.
NOTE:---Do not spray too much starter fluid and if your car starts and runs properly with starter,fluid,dont use starter fluid again n again to start your car.Its just for testing,not for regular driving.Its not good for car.Too much starter fluid can "wash" cylinder walls of their lubrication. Never use it while the engine is actually running.----------------check out this possibilities.This should help.Thanks.helpmech
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