I own a 95 chevy suburban. The service engine light has come on and the trouble code is for lean exhaust (44). The engine stalls out while idleing and hesitates during acceleration. I have change the plugs, wires, distb. cap and rotar, the o2 sensor and fuel filter. The mechanic had it all day and the timing chain and timing is fine. All sensors are testing properly. Fuel pump is good. Fuel Pressure is good. Hose are good. What can be causing this problem? I am ready to pull my hair out.
