2005 Ford Escape - Engine bucks only between 1500 and 2000 rpm - very strange problem | Ford Explorer Forums - Serious Explorations

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2005 Ford Escape - Engine bucks only between 1500 and 2000 rpm - very strange problem

Darkseid

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Year, Model & Trim Level
2005 Ford Escape XLT 3.0L
2005 Ford Escape XLT 3.0L V6 DOHC - starts and idles fine. Good power up to about 1500 rpm and then again above 2000 rpm. Problem does not exist outside of this range. Pressing the gas pedal is when the symptoms show up within that range. If I let go of the gas pedal and it is in that range it will not buck. No engine codes show up.

When it is bucking within that range occasionally the Theft light will come on with a notice of no power slightly but the car will keep going.

I have done the following to try to assess and fix the issue with no changes to the actual problem:

- Replaced Fuel Pump, Fuel Filter, ICV (Idle Control Value) and Gasket, EGR Value, Inner Manifold Gaskets, Spark Plugs, Coil-on-Plug Boots, TPS(Throttle Position Sensor), Air Filter and the PCV Valve

- Cleaned Throttle Body and MAF (Mass Airflow Sensor) with the proper cleaner, tried using different fuel octanes and fuel cleaners as well

Have used both a mechanic code reader/live data tool along with my own BlueDriver code reader but nothing is coming up out of the ordinary.

Another thing I have noticed is when I punch down on the gas pedal to the floor in order to gain quick speed I do feel some slight hesitation spurts where, in my opinion, feels like fuel is having issues getting through but you would think that some sort of code would show up.

I'm stumped at this point and instead of throwing more money towards additional parts and taking it back to the mechanic again (they were unable to find the issue the first time) I though I would try here.
 






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