The fuel pressure is at between 50 and 55 when it's running. Hitting the the throttle makes it go up a little more. I have not cleaned the throttle body. It does have 2800,000 on it but it looks clean. I put Seafoam in it every other full tank.
The misfire is so bad that it won't stay running after startup. The Tahoe was running great up until I stopped at a red light. Then all of a sudden it died. No signs of any problems. I have to put my foot on the throttle for it to start.
My 2002 Tahoe misfires at idle. I've replaced everything from plugs, wires,coils, injectors, purge valve and MAP sensor. Nothing has changed. All it's giving me is a. misfire code. It's a inexpensive test but I can't spend a fortune trying to get this thing running
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