Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi, My Name is***** have over 20 years experience repairing vehicles. I am a ASE Certified Master Auto Technician. I am confident we can resolve your problem together.Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resoloution. I also do not work in an office awaiting your reply. I run a small business and will do my best to answer quickly. Depending on the day and time there may be a delay in getting back to you.Try your best to respond with good detail so I can do the same.
Do you have a fuel pressure gauge?
I cannot place a call tonight. I can tomorrow
Do you have a scanner? can you monitor TPS Voltage see if its steady while pressing? Key on engine off
do you have a volt meter?
the TPS sensor has 3 wires. if you use a Tpin and back probe the wires you will see that 1 wire is ground (black). 1 wire is 5 volts (grey) verify this is 5 volts key on engine off and the other (Dk Blue)should be around .5 volts at idle and 5 volts when wide open. this is the wire I want you to concentrate on. Look for drops when opening throttle slow.
OK. I suspect you may have a bad fuel pump. probably sufficient pressure and lacking volume. If you borrow a pressure gauge try to get one with a pressure relief. While it is running press the release and the pump should be sufficient to keep running. If it stalls you have a bad pump or plugged fuel filter
Yes I will still assist. I only get compensated if you leave positive rating. Thanks
I would check the fuel pressure. There is a sock in the gas tank that could be plugged. There is also a fuel pressure regulator in the TBI Unit