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2003 Ford Focus. Ford dealer says computer memory totally erased. Alarm on car was going off for no reason right after car stalled on freeway.

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So the computer will have to be reprogrammed. But first will need to be checked for a proper ground. Most likely the ECU will have to be replaced.

Posted on Jul 28, 2009


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No keys,no money,allready ran a hot to the fuel pump and there a way to solder on the alarm computer pins and skip the pats system .im screwed

If you have the original owners manual and dealer packet, you can look for a small tag called a key code. With this you can get a duplicate key made at the dealership.

Jun 11, 2015 | 2003 Ford Focus

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Why is my ford focus 2003 car always stalls?

My ford focus 2.0L Auto T. Starts and keep idling for 10 minutes, then stalls. Sometime when shifting to 1st, it stalls
(I hear a sound like "cliking or knopking" in the motor.

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Feb 03, 2012 | 2003 Ford Windstar

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2003 ford focus 2.0L everytime the key is turned off the emissions systems reset cant get it passed emissions because they keep going incomplete when the car is turned off

youronboard computer system must be programed by the dealer. there is a "glitch" in software that makes so pcm does not retain the drive cycle. go to any Ford dealer and request to have the PCM updated to the latest calibration and that WILL do the trick. When New York went to the light enhanced emission inspection, we had to program hubdreds of focus' to make pass insepction...there will be a charge for this service as your vehicle would be out of warrnaty by time...shoudl be around $100 depending upon labo rates at shop....

Jul 02, 2011 | 2003 Ford Focus

1 Answer

I have a 2002 Ford Focus ZX5 with a check engine light on.. Just out of curiousity, which fuse specifically controls a check enigne indicator on the dashes guage cluster. And if the fuse is pulled, what...

there is no fuse for that, you would either have to fix the issue for the reason the light is on or disconnect the battery for a few hours to erase the memory in the cars computer.

Dec 22, 2010 | 2003 Ford Focus

1 Answer

Car stalls and won't turn on. What could be an

2001 ford focus 1.8 Zetec just suddenly stalled and will not now restart.

Jul 12, 2009 | 2003 Ford Focus

1 Answer

My 2003 ford focus 4 cycl stalls after going 25mph

dont think so it could be the throttle sensor causeing the problem hope i have helped you

Apr 01, 2009 | 2003 Ford Focus

1 Answer

Ford Focus cutting out

Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Dec 03, 2008 | 2000 Ford Focus

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