AboutTodd Puccio Expertise General auto repair,electical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm spacific. I have worked at my current dealseship since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way.
Experience Experience in the area:I have been employed by the same Gm dealer for 18 years and and a ASE master technician. I work at a Pontiac and GMC truck store. Served a a lead technician when dealership was on a team system.
I just recently moved to a Buick,Hummer,Saab Store when my franschise was purchased by this dealership.
Organazations: ASE master techncian
Education/Credentials:High school diploma,2 year vocational school degree
2 year college degree. Associates degree in applied scineces (auto technology)Awards and Honors: GMC master techncian
Question QUESTION: IT IDLES FINE UNTIL FUEL PRESSURE GOES OVER 40 PSI THEN IT STARTS TO CUT OUT AND IF YOU GIVE IT GAS IT DIES.IS IT TO MUCH PRESSURE OR AM I LOOKING IN THE WRONG SPOT THERE ARE NO ENGINE CODES .IT RAN GREAT THEN NEXT DAY THIS IT ONLY HAS 87000 MILES
ANSWER: Hi Mike:
That sounds a bit high I think that engine runs more at like 35-38 psi. You could have a issue where you don't have enough fuel volume from the pump the pressure could be okay but not enough volume to keep the engine running at higher speeds. If you have a scan tool look at the short term fuel trim and see what what it does when you run the engine speed up if it's adding fuel that would be a indication of a lean condition and vise versa for a rich condition. Good luck :}
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QUESTION: what do you mean short term fuel trim
Answer what I mean is up to the minute fuel delivery. on a scan tool you can see how the engine computer is driving the fuel delivery into the engine. short term is right now the way the engine is being run. that is a good indication of what's going on. if while running that number spikes up or down will give you a direction is which to look for the fuel delivery problem. I hope I didn't confuse you more....
