Check engine light, codes p0305 and p1000

2001 FORD ESCAPE

99,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC

ALEXB03@COMCAST.NET

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I just got the vehicle listed above, it threw a p0305. I changed cylinder 5 coil and spark plug. Drove great. Check engine light came back on. This time p1000 and p0305. I went ahead and then changed all coils and spark plugs. Took it for a long drive everything was good, cars runs fine. Light came on again, same codes but the car is running fine. I don’t know why the light is on. What else could it be?

Sep 24, 2021 at 8:51 AM

ASEMASTER6371

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Good afternoon,

I would check 2 things right off the battery.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

1. Compression. If the compression is low it will cause this issue. You need 140-160 in the cylinder. You can rent a tester at a parts store.

https://www.2carpros.com/articles/how-to-test-engine-compression

2. Fuel pressure Low pressure from a weak fuel pump will also cause this issue. I attached below the spec for the pressure. If it is low, the fuel pump will have to be replaced.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Roy

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Sep 24, 2021 at 9:43 AM