My check engine light came back on for the po171 code, running lean in B1, S1 again. I replaced the oxygen sensor and I replaced the IAC valve about a month ago and the light is still on. And the idling is still acting crazy when I start the car up in the mourning, it acts like it wants to go up but it don't then the rpms just jumps to 2500 rpm for a second or two then goes to normal idle.(600-800rpm)
What could it be.
I dont plugs wires, front o2 sensor. Upper intake manifold and gasket replaced and fuel filter along with new IAC valve.
_________________________
Exterior- stock painted black wheels, clear corners, stainless steel grill, cross and drilled front and rear rotors with evolution brake pads.
Coming soon- 18 inch black mustang bullet rims, GT/GTP rear bumper, tinted windows.
Previous Topic
Index
