Car

Ask a Mechanic Online and Get Answers to Your Car Questions

Ask an Expert,
Get an Answer ASAP!

Car

how do you change the alternator on a 2002 ford focus se

Customer Question
i have the bttery disconnected...
i have the bttery disconnected and the wire leading to the alt. disconnected. i know about the 3 bolts to loosen as well. its just when i put a socket on the main pulley the belt slides around either way. do i have to let tension off at all.

Optional Information:
2002 Ford focus se 2.0






Submitted: 11 years ago.Category: Car
Show More
Show Less
Ask Your Own Car Question
Answered in 27 minutes by:
1/24/2006
Auto Mechanic: Fordanswerman, Auto Service Technician replied 11 years ago
Fordanswerman
Fordanswerman, Auto Service Technician
Category: Car
Satisfied Customers: 3,306
Experience: Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0
Verified
Thanks for your question. Are you talking whether to take the tension off of the alt to remove the belt? You do need to remove the belt off of the alt.
Ask Your Own Car Question
Auto Mechanic: Brian, Service Engineer replied 11 years ago
Brian
Brian, Service Engineer
Category: Car
Satisfied Customers: 1,227
Experience: Master Tech, Bachelor's of Science in Automotive Technology, Ford Factory Trained
Verified
First you need to remove the belt. In order to do that, you must
relieve the tension on the belt by using a socket wrench on the bolt
head in the center of the tensioner pulley to rotate the tensioner so
the belt loosens. The tensioner is at the bottom of the engine, just
below the alternator, and must be accessed from underneath or possibly
through the wheelwell with the wheel removed.



Here is a picture of the tensioner:







Here are the instructions for removing the belt, from the Factory Shop
Manual (the instructions say to remove certain components like the fuel
pressure sensor to provide easier access to the alternator, but it may
not be absolutely necessary as long as you can remove the alternator
without damaging anything:

Accessory Drive Belt — 2.0L Zetec-E (Zetec)

Removal

All vehicles

  1. Disconnect the battery ground cable. For additional information, refer to
    Section 414-01 .

  1. Raise and support the vehicle. For additional information, refer to Section
    100-02 .

  1. Remove the splash shield.




  1. Remove the accessory drive belt.
    1. Rotate the accessory drive belt tensioner clockwise.

    1. Remove the accessory drive belt.




Installation




  1. To install, reverse the removal procedure




Here is the Alternator Removal and Installation Instructions:



Removal





  1. CAUTION: The generator must be protected from contamination. Failure
    to follow this instruction may cause premature failure of the generator.

    Protect the generator with lint-free material to prevent contamination.




  1. Remove the fuel pressure sensor. For additional information, refer to
    Section 303-14 attached below





  1. Remove the accessory drive belt. For additional information, refer to
    Section 303-05 .




  1. Lower the vehicle.




  1. Remove the coolant expansion tank retaining bolt.





  1. Detach the coolant expansion tank from the retaining clip and secure it to
    one side.





  1. Detach the power steering reservoir and secure it to one side.





  1. Disconnect and detach the engine wiring harness and secure it to one side.





  1. Disconnect the ground cable.





  1. Disconnect the electrical connector and detach the evaporative emission
    canister purge valve.





  1. Disconnect the vacuum lines from the evaporative emission canister purge
    valve.





  1. Disconnect the evaporative emission canister vacuum line and remove the
    evaporative emission canister purge valve.





  1. Disconnect the cylinder head temperature (CHT) sensor electrical connector.





  1. Disconnect the ground cable and remove the engine lifting eye.





  1. Disconnect the ground cable.






  1. NOTE: Mark the position of the engine mounting.

    Remove the front
    engine mounting retaining bolts.











  1. Slide the engine towards the front of the vehicle and reinstall one of the
    retaining bolts into the rear bolt hole to prevent the engine moving backwards.





  1. Disconnect the generator electrical connectors.
    • Remove the protective cap (if equipped).





  1. Remove the generator retaining bolt.






  1. NOTE: The retaining bolt must be fully disengaged from the bracket
    although it is not possible to remove the bolt at this stage.

    Unscrew the
    generator retaining bolt fully.





  1. Remove the generator.
    • Remove the retaining bolt from the generator.




Installation





  1. NOTE: To aid installation, slide back the generator locking sleeves.

    To install, reverse the removal procedure.









Fuel Rail Pressure (FRP) Sensor — 2.0L Zetec-E (Zetec)


Removal


WARNING: Do not smoke or carry lighted tobacco or open flame of any
type when working on or near any fuel related components. Highly flammable
vapors are always present and may ignite. Failure to follow these instructions
may result in personal injury.


WARNING: This procedure involves fuel handling. Be prepared for fuel
spillage at all times and always observe fuel handling procedures. Failure to
follow these instructions may result in personal injury.


WARNING: The fuel system remains pressurized for a long time after the
ignition is switched off. The fuel pressure must be released before attempting
any repairs. Failure to follow these instructions may result in personal injury.


  1. Release the fuel pressure. For additional information, refer to Section 310-00 .

  1. Disconnect the battery ground cable.

  1. Disconnect the fuel pressure sensor electrical connector.


  1. Disconnect the fuel and vacuum lines.


  1. Remove the fuel pressure sensor.


  1. Remove and discard the O-ring seal.


Installation



  1. WARNING: Do not smoke or carry lighted tobacco or open flame of any
    type when working on or near any fuel related components. Highly flammable
    vapors are always present and may ignite. Failure to follow these instructions
    may result in personal injury.


    WARNING: This procedure involves fuel handling. Be prepared for fuel
    spillage at all times and always observe fuel handling procedures. Failure to
    follow these instructions may result in personal injury.


    WARNING: The fuel system remains pressurized for a long time after the
    ignition is switched off. The fuel pressure must be released before attempting
    any repairs. Failure to follow these instructions may result in personal injury.


    NOTE: Install a new fuel pressure sensor O-ring seal.

    To install,
    reverse the removal procedure.
    • Lubricate the fuel pressure sensor O-ring seal with clean engine oil to aid
      installation.















Ask Your Own Car Question
Ask Brian Your Own Question
Brian
Brian
Brian, Service Engineer
Category: Car
Satisfied Customers: 1,227
1,227 Satisfied Customers
Experience: Master Tech, Bachelor's of Science in Automotive Technology, Ford Factory Trained

Brian is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

The nearest Volvo dealer is 160 miles away. Best $15 bucks I have spent in a long time!

Paul MCorpus Christi, TX

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Technician

1,243 satisfied customers

16 years of experience

Ted G.

Ted G.

ASE Certified Technician

1,724 satisfied customers

20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness

George H.

George H.

ASE Certified Technician

1,537 satisfied customers

ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist

GM Tech (Cam)

GM Tech (Cam)

Auto Service Tech

669 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Amedee

Amedee

Former ASE Master Tech

2,520 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Jerry

Jerry

Master Mechanic

2,181 satisfied customers

ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager

Richard

Richard

ASE Certified Technician

1,000 satisfied customers

12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes

< Previous | Next >

Related Car Questions
I'm wondering if Exxon Synergy gas will hurt or harm my 2008
I'm wondering if Exxon Synergy gas will hurt or harm my 2008 Prius. … read more
K. Wiggins
K. Wiggins
ASE Certified Technician
Associate Degree
3,000 satisfied customers
I need to know the type of transmission is in a 2006 Dodge
I need to know the type of transmission is in a 2006 Dodge Caravan (3.3L) and also how many speeds there are: VIN # 1D4GP25R36B646548. Thank you.… read more
Edward
Edward
Professional at Justanswer.com
Associate Degree
3,175 satisfied customers
I have a 1995 C280 and there is no braking on the passenger
I have a 1995 C280 and there is no braking on the passenger side front wheel. … read more
Expert
Expert
15 satisfied customers
My truck is sputtering but only when I'm under load like
My truck is sputtering but only when I'm under load like during acceleration, I am throwing no codes so I'm not sure how to proceed … read more
vwtech0405
vwtech0405
VW Technician
Associate Degree
9,666 satisfied customers
My cadillac is a 2008 cts 3.6. It is cranking but not
My cadillac is a 2008 cts 3.6. It is cranking but not starting … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,396 satisfied customers
I am installing a back up camera. want to wire to the back
I am installing a back up camera. want to wire to the back up light. which color is the backup light and where is best place to ground? … read more
Todd M
Todd M
Owner
ASE Certification
1,484 satisfied customers
A problem with the heater. When the truck is idling no
When the truck is idling no matter what the engine temp gauge shows the heater only blows cold air as soon as RPM is up like driving down the road above 1000 to 1500 RPM the heater works like a blast furnace no problem … read more
Steve
Steve
Master\u0027s Degree
954 satisfied customers
I have a 2002 chevy carla SS, 3800 engine, with a check
Second opinion] I have a 2002 chevy monte carla SS, 3800 engine, with a check engine light problem. Code showed 02 sencers. Changed both, cleared codes and drove it. After driving a little ways, check… read more
Matt
Matt
Engineer
Bachelor\u0027s Degree
5 satisfied customers
I purchased a Helix column STCOL2 will the Ididit wheel
i purchased a Helix column STCOL2 will the Ididit wheel #201463081590 fit this column … read more
AutoDoc
AutoDoc
Shop Owner
Bachelor\u0027s Degree
390 satisfied customers
2000 kia sportage runs at idle its 4x4 se 2.o engine
2000 kia sportage runs at idle its 4x4 se 2.o engine sluggish up hill no power ,put in new fuel filter tps no chonge … read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
10,348 satisfied customers
The new cv shafts for my Pulsar N16 1.8 litre automatic
The new cv shafts for my Pulsar N16 1.8 litre automatic turned out to be for a manual transmission. Have now fitted the correct shaft on the driver side. Is the passenger side shaft the same for both … read more
Jay
Jay
Shop Forman / Lead Tech
Vocational, Technical or Trade Scho
20,878 satisfied customers
Have a 2014 Range Rover sport with jag/Rover 3.0 6
Have a 2014 Range Rover sport with jag/Rover 3.0 6 cylindrical gas supercharge motor. Replacing my timing chains and have no spec showing the setting for the chains. Can someone please provide diagram… read more
Eric
Eric
Retired
N/A
31,322 satisfied customers
Does the dashboard have to be replaced on a 2017 Maserati
does the dashboard have to be replaced on a 2017 Maserati Levante after passenger air bag deploys? … read more
Expert
Expert
15 satisfied customers
2007 Envoy won't shift out of neutral. Actually the shift
2007 Envoy won't shift out of neutral. Actually the shift indicator says it is in drive or reverse, but the wheels spin freely (will roll down a hill). … read more
Steve
Steve
Master\u0027s Degree
954 satisfied customers
Misfiring. 92 gmc dually like 120, 000. 3500. It gave me a
misfiring JA: How many miles are on the car? Is it a steady misfire? Or random? Customer: 92 gmc dually like 120, 000 JA: What is the model of your '92 GMC? Customer: 3500 JA: Are you fixing your 3500… read more
rpmdiag
rpmdiag
High school
7,271 satisfied customers
Codes indicate misfire cylinder 3 and o2 sensor. When this
Codes indicate misfire cylinder 3 and o2 sensor. When this started a few weeks ago, since we have 150k on 2011 Odyssey I decided to replace plugs and all coil packs. It misses at 1000-1500 rpms in hig… read more
Steve
Steve
Master\u0027s Degree
954 satisfied customers
I have a 2011 ford ranger 3.0 litre. I started it mondaqy
hi i have a 2011 ford ranger 3.0 litre. I started it mondaqy morning and it ran for a few seconds and stopped. It turned over ok but not start sounded like fuel so i pumped the primer 3 or 4 times and… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,410 satisfied customers
My traction control light that comes on when you start the
My traction control light that comes on when you start the car will go off and as I am driving, it comes on and stays on. I bought this car in 2011 and it was a brand new 2012 Nissan Altima. In all of… read more
jim
jim
Vocational, Technical or Trade Scho
1,317 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x