when I stop at redlight, car idles rough, jumps and acts like it's going to cut off. Fixed one sensor, cleaning another today. What could be the problem now?

Asked by Oct 26, 2014 at 04:17 PM about the 2003 Ford Focus ZX5

Question type: Maintenance & Repair

Ford Focus 2003 zx5 hatchback.  Oil/filter recently changed, injectors and spark plugs
havent been yet.

2 Answers

45

Be sure to check the fuel pressure regulator. It sits just before the fuel rack for the injectors. FYI Ford is out of them till Nov. and they cost about $100+. I got one for free at a junk yard. You need to pull the fuel rail to remove and replace the reg.

10

Changing the spark plugs to my 01 focus made no change in this type behavior. I changed the Throttle Position Sensor, and it runs better than ever before. Very inexpensive repair, and no more stalls when sitting at an intersection.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 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

  • Need help with electrical problem 35 answers

    I will try to make this as detailed as I can. I’m driving down the freeway at 40 mph in a bad snow storm. I turn on my lights and I loose my entire dashboard. Odometer, speedometer, gas gauge, ever...

    2003 Ford Focus SE Wagon

    -

    Maintenance & Repair

  • Runs and Idles rough, vibrates hard, shuts off when stopping. 5 answers

    2005 Ford Focus Z4 automatic, it always runs rough, as soon as you turn it on it starts revving high as if one was pressing the accelerator, the whole car rattles from the vibrations. It also shuts of...

    2005 Ford Focus ZX4 SE

    -

    Maintenance & Repair

  • Engine revs and loses power when driving. 16 answers

    I have had this car in for a fix at two different dealers. When driving at highway speeds the tachometer revs to 5 or 6,000 RPMs car loses power. The first fix was a problem with the cruise control ...

    2006 Ford Focus

    -

    Maintenance & Repair

  • Car keeps cutting off 1 answer

    Please help, my battery light has been coming on but then it would go back off. I went to hair salon when I came back out my car wouldn't start, I got someone to jump it was on for awhile then cut...

    2005 Ford Focus ZX4 SE

    -

    General

Search Ford Focus Questions

Ford Focus Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,220
#2 dandyoun
dandyoun
Reputation 860
#3 Su'ad Barakat
Su'ad Barakat
Reputation 820
View All

Related Models For Sale

Used Honda Civic
1,148 Great Deals out of 64,597 listings starting at $1,195
Used Ford Fiesta
274 Great Deals out of 16,843 listings starting at $2,995
Used Toyota Corolla
1,329 Great Deals out of 67,643 listings starting at $1,595
Used Ford Mustang
693 Great Deals out of 38,145 listings starting at $1,750
Used Mazda MAZDA3
467 Great Deals out of 26,996 listings starting at $1,990
Used Ford Escape
1,719 Great Deals out of 85,140 listings starting at $1,350
Used Honda Accord
1,190 Great Deals out of 77,676 listings starting at $969
Used Toyota Camry
1,499 Great Deals out of 100,459 listings starting at $700
Used Hyundai Elantra
928 Great Deals out of 53,194 listings starting at $1,799
Used Volkswagen Jetta
713 Great Deals out of 29,784 listings starting at $1,200
Used Nissan Altima
1,104 Great Deals out of 85,898 listings starting at $1,675
Used Chevrolet Malibu
1,164 Great Deals out of 78,646 listings starting at $2,495

Used Cars For Sale

2016 Ford Focus For Sale
51 Great Deals out of 24,980 listings starting at $9,477
2015 Ford Focus For Sale
275 Great Deals out of 6,356 listings starting at $8,558
2014 Ford Focus For Sale
399 Great Deals out of 7,824 listings starting at $5,995
2013 Ford Focus For Sale
217 Great Deals out of 4,311 listings starting at $5,250
2012 Ford Focus For Sale
155 Great Deals out of 4,148 listings starting at $3,995