Question about 2003 Ford Taurus

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Gas cap light staying on, replaced cap, still problem.

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You may have to remove the NEG battery terminal for 10 minutes to reset the sensor. Or you can take your car to Autozone or Oreillys and get a free scan and they can reset your cars' onboard computer for you.

The scan may show more is wrong with your car than just the cap. The sensor blames the gascap when it detects a leak. You could also have a vent hose leak. Best to get it scanned.

Posted on Nov 06, 2010

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2 Answers

Gas cap light stays on


Take off your gas cap and put it back on if that does not fix it so the light goes off replace the gas cap. This light usually indicates. A problem with the gas cap. It maybe on crooked or is not sealing properly in which case it would need to be replaced. It may need to be driven a few miles before the light goes off

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Check engine light stays on


The 'check engine' light comes on when almost anything goes wrong, from a loose gas cap to computer systems; low fluid levels to a bad catalytic converter. A common problem is the gas cap not screwed on correctly. This has an easy remedy. Screw the cap off and then carefully seat it and screw it back on until you hear it click. Then drive the car for at least 100 miles. If the light goes out that was the problem.
If the light stays on then you must take it in to be checked by special equipment because that is the only way to isolate the problem.
In my own experience of the light coming on 3 times, there were 3 different reasons: 1) loose gas cap, 2) bad catalytic converter needed replacing [the most expensive unless under warranty] and 3) a bad gas cap that needed replacing. After all 3 instances, the light went out.
I hope it's only a gas cap issue for you. Good luck.

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CHECK GAS CAP COULD BE LOOSE OR MISSING OR LEAKING CAUSING EVAP LEAK IN WHICH WILL CAUSE CHECK ENGINE LIGHT FLASH ON..

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Light on my dashboard


ford taurus's are well known for this. the seal on the gas cap goes bad. before you replace the gas cap make sure when you close the gas cap you are turning it at least 5 clicks. if light stays on get a new gas cap. they are easy to install all you need to do is remove the gas cap.remove the gas cap strap. put ******** the new cap, close cap and turn 5 clicks. not clicking 5 time can set a p400 or p401 evap code causing the check enging /ses light to come on.

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