I have a 2003 taurus that won't start

Asked by Nov 14, 2012 at 06:02 PM about the 2003 Ford Taurus SES

Question type: Maintenance & Repair

car was running ruff  then quit running. 4 codes p0305 and p0306 cylinder 5 & 6 misfire.
p0316 misfire on start.  p1151 undefined lack of H02S21 switches/ sensor , lean
I put new plug wires and plugs and still it won't start
I spray a little starting fluid and got a very small ignition but no engine running time at all

3 Answers


Sounds like fuel pump


The fuel pump is located under your backseat you cant access it from there but, what u could do is put your ear against the back seat around the middle of the seat, have someone turn the key on and off a listen for the fuel pump, they are quite loud with your ear that close, if you dont hear anything chances are it is fuel pump, there is a fuel pump relay in the front under the hood in your fuse box, however with all the miss fire codes u were getting and the fact that it wont run now, tells me its the fuel pump, low fuel preasure can cause misfires, it has happened to me.

Best Answer Mark helpful

Thank You, I removed the tank and replaced the fuel pump. I also replaced the fuel filter. The car started right up. It took a few miles for the engine to stop running rough ( less than 10). I had to clear the misfire codes again. now it is running OK

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