2002 Ford Taurus Rough idle and check engine light

Tiny
TIGMANNC
  • MEMBER
  • 2002 FORD TAURUS
Engine problem
2002 Ford Taurus V6 Front Wheel Drive Automatic 137000 miles

2002 Ford Taurus wagon 3.0 V6_mileage: 137000. Several months ago our alternator went bad. I replaced it but a week later the check engine light came on and the car lost power while running VERY rough. I replaced the plugs, wires and coil pack. This significantly improved the problem however it still runs rough at idle. Especially with a load on (in gear or A/C on). The highway miles are still close to 27 mpg.
I checked the engine codes and they are P0302-Cylinder 2 Misfire Detected and P0316-Misfire Detected 1st 1000 Revs.
Generally there is no loss of power unless the car idles for a awhile after it is warm, ie at a stoplight. Then the check engine light begins to flash and power drops noticeably. If I ease the car along or let it sit long enough, the power returns and the light stops flashing. I suspect the #2 injector but I would like a professional opinion. Thank you.
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Thursday, December 6th, 2007 AT 3:37 PM

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Tiny
MERLIN2021
  • EXPERT
Yes you can check the injectors, all you need is an ohm meter, and a fuel pressure tester, here'sa how, the system by the way should be 39-65 psi...


http://www.2carpros.com/forum/automotive_pictures/62217_Injectors_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Injectors1_1.jpg

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Thursday, December 6th, 2007 AT 3:52 PM

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