Question about 2002 Ford SVT Focus

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Car is stalling

My engine light keeps coming on and when I come to a stop sign or stoplight it will stall. I did the self diagnostic check and the code that keeps coming up is p0171. What does this mean?

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  • Anonymous Mar 18, 2014

    the car is stalling when i come to a stop

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PO171 means that the MAF (MASS AIRFLOW SENSOR )sensor is dirty or deffective . Or that there is a leak in the vacume hose leading to the MAF sensor.Try cleaning the MAF sensor with brake cleaner .Be careful not to damage it.Check your Air filter also. Make sure it is clean. the reason the MAF sensor gets dirty is because of the filter. Also look for any leaks in the hose or hoses connected to it.It is located near the top of the air filter...little black box with wires coming out toward the front of the car.

Posted on Oct 28, 2008

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you have 2 independent failures.
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2: engine. (this is IT, fix this)

you are guessing at ABS parts.? just throwing them. why do that?
my guess is you have a mech, and you want seconded guessing
on line with blind folks here.


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did you take it to a shop (crooks) and tell them my ABS is on?
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ABS can go on just with a bad brake caliper pad. a $10 part.
if car stops ok, and the lamp is out RUNNING !!!!
Then leave the ABS alone. why assume the most expensive part on car is bad, why do that...???? why not put on new pads. and rotors.
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here is the stalls list, for only the ASD.
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THE ASD is the funky Jeep thing, that kills the engine for many a reason. (there are tests for each case failure)

http://www.fixkick.com/Jeeps/ASD.html


if the CEL lamp comes on driving < NOT STALLED)
then connect any scan tool, to the DLC connector at knees.
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in REAL TIME< means you missed the boat.
that is, you didnt get the facts of the failure.
but errors still in effect are stored and you can in fact
scan them parked, key on.
the CEL is only a SMOG light, you must scan to see the other 100+ errors. possible.

Better:
find a real ASE shop, and ask them to fix the stalls, (car stops good)
then they will fix that
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