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Old 04-19-2014, 11:16 AM   #1
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Help! engine stalling

Waddup!!!! ive never had to post a thread asking for help but i am at a loss right now. My focus has been shutting off after a few miles of driving it. When i come to a stop or slow down the car will start to idle really bad then die. Also, when i go to accelerate, the car seems to choke and bog down until the gas peddle is released then continues to drive normally.

I have changed:
fuel pump
fuel filter
iac valve
egr valve
maf sensor

I changed all these parts due to a mechanic friend looking at the car and advising me those things were wrong with it. Unfortunately, i am at the point where i no longer have money just to throw at it. I need some help on where to start to diagnose to get this car figured out lol. i am about ready to drive it off a cliff haha. any help would be greatly appreciated.

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Old 04-19-2014, 11:41 AM   #2
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Moved to "General Technical Chat".
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Old 04-19-2014, 03:08 PM   #3
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Hi. Here are 4 items to inspect;

1- Spark plug health and proper gap set.

2- Wiring health leading into (and right at) the ign coil. These wires are often bent, pinched or damaged. I am not talking about the bigger spark plug wires.

3- Spark plug wires.

4- The ign coil. Inspect the coil very closely and look for hairline cracks. Cracks or no cracks, the coil can be faulty and cause the problems you are having.
You've got to ask yourself one question: Do you feel lucky? -and could you really drive a Focus ATX Wagon?

Last edited by Marde; 04-19-2014 at 03:40 PM. Reason: wording edit on item 2
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Old 04-19-2014, 04:48 PM   #4
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I'll add checking the PCV hose. When that gets soft & collapses, or has a hidden crack/hole, it can affect idling & low throttle operation badly.
"Rubber Side Down"

S.R. #275
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Old 04-19-2014, 06:49 PM   #5
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I'm going with this mechanic friend not being a very good one ...

Throttle Position Sensor is my vote. It's the one part that can mimic symptoms for problems with all of those you just replaced.

A simple "Sweep Test" will confirm if the TPS is dead or not.

YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
Don't "think outside the box".
There is no box.
Do it correct, or do it twice.
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