I would suggest checking fuel pressure and fuel filter could have little dirt or something clogging fuel and engine light will stay on due to too rich or too lean of fuel/air mixture
i just replaced fuel filter thinking thats what it was and checked my pressure also.. everything seemed on point. no fuel smell. just sputtering.. and throwing bank 1 o2 sensor code when i replaced them twice.. lol
next thing would be to make sure all injectors are working correctly and make sure getting good spark through all plugs and wires
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SOURCE: check engine light flashing, car shaking and smells like gas
it could be anything have the code checked odds are it is a bad sensor
SOURCE: Check engine light on car sputters and lurches as
well by the sounds of it your car is past it and it may be time to replace it...easier said than done! however, i suggest checking all your connections are clean (simply pull apart and spray with conection cleaner)
SOURCE: 2002 vw passat....starts fine and drives
It appears that your brake booster system has a major vacuum leak which is causing the engine to go lean and stall. Check the hose between the intake manifold and the brake booster. It may be cracked or loose causing outside air to enter the hose when the brake is applied.
SOURCE: 2001 dodge durango 4.7liter 4x4 i replaced front
bank 1 sensor 2 is the left downstream sensor (1/2) is located in the exhaust downpipe just after the mini-catalytic convertor, and before the main catalytic convertor. Now the meaning of this is that your not getting any 12+/12- heating on sensor, which means voltage is supplied to heat sensor up. You have a O2 sensor heater relay, but not getting problem with 2/2 sensor tells me you need to check/inspect the wiring for 1/2 sensor, open wiring for 1/2 sensor and inspect
SOURCE: I have a 2004 Spectra.
Well, it is either a timing belt/chain going out or a bad crank position sensor most likely causing the other problems. The O2 sensor may be bad as well but that usually doesn't cause the Misfire. The vehicle on board computer is confused, that is why it is throwing all those codes. and why it gives you that 1166 code which isn't defined. Check the crank position sensor and the timing and timing belt first. Once you have that fixed the rest should clear up.
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