battery cables, alternator, or PCM?


Asked by Sep 25, 2014 at 03:59 PM about the 2001 Ford Focus SE

Question type: Maintenance & Repair

2001 automatic Ford Focus problem! Randomly when I am driving at either high or low
speeds my car will all of the sudden jolt and lose acceleration as if it shifted into neutral.
It only lasts for a second or two and only does this when the "multifunction" light turns
on. Sometimes it will stop completely and I will have to restart it at a red light. It will do it
for days at a time and then nothing for weeks. It just started doing it again! What could
this be? Also, my battery light is constantly coming on and off.  And today my car

6 Answers


check fluids


fluids are good


Load test battery to rule it out,then have alternator checked,sound,s like alternator is working randomly,this would cause light to come on,and it would confuse the PCM,and make car run this way,including over heating issue,fan,s not running properly,because of low voltage,and as crumbob said check fluid in radiator and tranny.


also check continuity of wire from battery pos side to alternator


My alternator is slightly over charging at 14.6 but I don't think thats too bad. I was told today that it was my PCM but I don't know...

1 out of 1 people think this is helpful.

It is hard to diagnose a pcm without hooking it up to computer,if it was a pro,that diagnosed this as it being the pcm,then i would agree,but have it checked,it can be scanned to prove it is bad.

Your Answer

Add photo

Related Questions

  • 2003 focus, ztec. PCM draw 4 answers

    2003 focus, ztec. new alt. new batt. parasitic draw when the pcm fuse in place. draw goes away when the fuse is removed. tried 'soaking', unplugged all relays and fuses, draw still there. removed gem ...

    2003 Ford Focus ZX5


    Maintenance & Repair

  • 2002 ford focus charging problem 2 answers

    I have a 2002 ford focus with 84k on it. Battery is 6 months old, and testing good. I have installed 2 alternators in the last week and replaced the battery cables. Still not getting good voltage, i...

    2002 Ford Focus


    Maintenance & Repair

  • 2001 Ford Focus ZX3 hard start and stall problem. 21 answers

    I seem to be coming across a hard start and stalling problem with my Focus. It is difficult to start, meaning it just won't grab or turn over when I go to start it. When it does, it has a hard time st...

    2001 Ford Focus ZX3


    Maintenance & Repair

  • What is the PCM on a ford focus 2005 1 answer

    what is a PCM I saw this while reading the vehicles manual , it was used to identify a diode in the power distribution box in the engine compartment

    2005 Ford Focus ZXW SES Wagon


    Maintenance & Repair

  • truck starts missing when i take battery cable off 10 answers

    truck starts missing when i take positive battery cable off

    1986 Ford Ranger STD Extended Cab SB


    Maintenance & Repair


Looking for a Used Focus in your area?

CarGurus has 56,705 nationwide Focus listings starting at $1,495.


Search Ford Focus Questions

Ford Focus Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,200
#2 dandyoun
Reputation 850
#3 Su'ad Barakat
Su'ad Barakat
Reputation 780
View All

Related Models For Sale

Used Honda Civic"
1,139 Great Deals out of 59,064 listings starting at $995
Used Ford Fiesta"
257 Great Deals out of 17,150 listings starting at $2,995
Used Toyota Corolla"
1,422 Great Deals out of 67,153 listings starting at $1,295
Used Ford Mustang"
736 Great Deals out of 41,064 listings starting at $900
Used Ford Escape"
1,701 Great Deals out of 93,995 listings starting at $788
Used Honda Accord"
1,262 Great Deals out of 78,683 listings starting at $1,400
Used Toyota Camry"
1,601 Great Deals out of 98,436 listings starting at $895
Used Hyundai Elantra"
835 Great Deals out of 50,783 listings starting at $1,995
Used Volkswagen Jetta"
648 Great Deals out of 32,274 listings starting at $1,200
Used Volkswagen GTI"
121 Great Deals out of 6,237 listings starting at $2,900
Used Nissan Altima"
1,351 Great Deals out of 87,430 listings starting at $1,095

Used Cars For Sale

2016 Ford Focus SE For Sale
13 Great Deals out of 10,711 listings starting at $9,370
2015 Ford Focus SE For Sale
172 Great Deals out of 3,435 listings starting at $8,999
2014 Ford Focus SE For Sale
233 Great Deals out of 4,708 listings starting at $7,495
2013 Ford Focus SE For Sale
101 Great Deals out of 2,455 listings starting at $5,495
2012 Ford Focus SE For Sale
72 Great Deals out of 1,825 listings starting at $4,339