BMW

BMW Questions? Ask a BMW Repair Expert for Answers.

Ask an Expert,
Get an Answer ASAP!

BMW

A friend has a 2000 bmw 740i. i worked in a transmission

Customer Question
shop many years. i tooking...
a friend has a 2000 bmw 740i. i worked in a transmission shop many years. i tooking his trans out and sealed the front. i had the battery disconnected about 12 days. the battery is weak. had to jump it off. trans worked fine but the speedometer did not. soon it started in higher gear. snapon scanner said it was a speed senser. i replaced both. did not help. also tack does not work and the gauges do crazy things. does the ecm need resetting? i have run into a bad ecm ground on other cars. maybe that is the problem. i dont know. can you help me?
JA: How old is the battery? And have you tested it with a voltmeter?
Customer: i do not know how old the battery is. he just bought it. i have not tested it but you have to jump it or put a charger on it if it sits a few days
JA: Are you fixing your 740i yourself? What have you tried so far?
Customer: it is my friends. it might as well be mine. yes i am fixing it. the only thing i have done is seal the trans and put both speed sensors on it.
JA: Anything else you want the mechanic to know before I connect you?
Customer: i cant think of anything
Submitted: 1 year ago.Category: BMW
Show More
Show Less
Ask Your Own BMW Question
Answered in 1 hour by:
10/27/2016
BMW Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: BMW
Satisfied Customers: 4,148
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Ask Your Own BMW Question
BMW Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

hey man how are you

1- we have to start with testing battery for 12 volts & under load do you have 12 volts

2- with car running at the battery with voltmeter , do you have 14 + volts with headlights, ac , radio on etc..

3- after you replaced the VSS sensors did the fault clear with your scanner, can you pull up the sensors and go down the road and see if they are reading

or is it not moving or going in gear ?

4- as far as bad ground and bad ecm , yes that is possible, but we have to start with a good 12volts & alternator charging for theses cars all of modules involved and if not enough power generated they will shut down or you want be able to clear the faults .

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Ask Your Own BMW Question
BMW Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 1 year ago

Please let me know if you need anything else on it, just reply back and we will continue

If you are good, Please Kindly Rate Me.

A 5 Star Rating is much Appreciated

If you feel I have not been helpful Please DO NOT RATE ME BAD OR POOR (1 or 2 stars) ,You can always ask me again or I can opt out of your question & open it for another expert ,that will provide you with more or better assistance on this issue

Please keep in mind that when you rate me , it does not end our conversation.

you can always come back to this conversation and ask me any follow up question you may have on this issue

(you can copy this link page & paste it in your browser when ready and it will open up our conversation again)

Thank You
Chad Farhat
ASE Certified Technician

Ask Your Own BMW Question
Ask Chad Farhat Your Own Question
Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: BMW
Satisfied Customers: 4,148
4,148 Satisfied Customers
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles

Chad Farhat 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

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

Meet the Experts:

Roger

Roger

BMW Master Tech

3,050 satisfied customers

10 yrs. experience as BMW Master Technician, shop foreman and dealer.

Marty

Marty

ASE Certified Technician

494 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

bimmaster

bimmaster

BMW Technician

1,838 satisfied customers

3 years dealer experience, master bmw tech

Sam

Sam

BMW Master technician

1,043 satisfied customers

BMW S.T.E.P. graduate, 10 years BMW dealership experience

Thebmwbum

Thebmwbum

BMW Foreman

714 satisfied customers

31 years BMW Experience

mike

mike

BMW Technician

694 satisfied customers

bmw master tech ase certified

Matt

Matt

Engineer

413 satisfied customers

Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing

< Previous | Next >

Related BMW Questions
95 e34 my engine just running rough of acceleration, like a
95 e34 my engine just running rough of acceleration, like a cylinder is missing. Engine feels wobbly. I need to check my coils and plugs, but was seeing if anything else i need to test. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Over heating. Replaced water pump (not needed), changed
over heating. Replaced water pump (not needed), changed thermostat & housing (not needed), flushed radiator … read more
Mechanic01
Mechanic01
1,164 satisfied customers
Where is the power accesory realy located on my bmw 528i
where is the power accesory realy located on my bmw 528i 1997 … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
The PDC module on my 2011 x5 is malfunctioning. I want to
the PDC module on my 2011 x5 is malfunctioning. I want to but the module but its not in the trunk area where its suppose to be. the lift gate module is there and no there are no dangling wires that wo… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
The car wont start and on clicks with a jumper. Like the
the car wont start and on clicks with a jumper JA: Where exactly do you think the noise is coming from? And how long has this been going on? Customer: like the starter JA: What is the model/year of yo… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2002 BMW 745i will not start cranks but will not start after
2002 BMW 745i will not start cranks but will not start after jacking the car with low battery … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a dull knocking noise when turning left and reversing
i have a dull knocking noise when turning left and reversing have replaced both cv joints .. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
My 2002 325xi (216K miles) stalls when I come to a stop. Not
My 2002 325xi (216K miles) stalls when I come to a stop. Not all the time but irritating when it does. What do you recommend checking? … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
2017 BMW 430I. I SHORTED THE POSITIVE BATTERY CABLE ON THE
I SHORTED THE POSITIVE BATTERY CABLE ON THE CHASSIS WITH A WRENCH NOW THE CAR ONLY STARTS WHEN YOU BOOST IT FROM THE FRONT JUMP POSTS … read more
Peter Concannon
Peter Concannon
Construction, Plant Fitter
1 satisfied customers
Parking brake light. Is that used for the emergency brake?
emergency brake light is orange and on all the time. I inspected the motor for the e brake and everything looks fine. I checked the fuses also … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Engine light on. p2187 code rough idle. Intermittent 2003
engine light on. p2187 code rough idle JA: Is the rough idle intermittent or consistent? Customer: intermittent 2003 e65 JA: What is the model of your '03 BMW? Customer: 745i JA: Are you fixing your 7… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
My 99 740 IL has a check coolant level error message coming
My 99 740 IL has a check coolant level error message coming on. At first the message came on every 3 - 4 months and I topped off the tank. The message started occurring every month or so and the BMW d… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
2004 Z4 driver's door switch will only roll passenger window
2004 Z4 driver's door switch will only roll passenger window down, whether you pull or push the switch. Passenger door switch will only roll window up, whether you pull or push the switch. Both window… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Half check engine light on 2012 mini countryman. Stay on. I
i took it to a mechanic. they changed spark plugs then change pump i believe, still the same. when i turn it on in the morning it doesnt turn on on the first try. on the second try it turns on … read more
rpmdiag
rpmdiag
High school
7,117 satisfied customers
I have a 2000 BMW Z3. It randomly has an electrical problem
I have a 2000 BMW Z3. It randomly has an electrical problem where all of the electric power goes out. For example we drove it to a store and it ran fine. 10 minutes later we came out and it would not … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
When my car has to sit outside in the cold over night (below
Hi when my car has to sit outside in the cold over night (below -10C or like 25F in the morning it will say transmission fault and i will have to warm up the engine then restart it before it will shif… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Sunroof wont close. 750LI 2012. And just initialized the
I'm trying to manually close it immediately due to rain… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
2003 BMW 325xi is having a problem. My brake lights stay on
2003 BMW 325xi is having a problem. My brake lights stay on all the time and also when I shut the key off and take it out most of the indicators in the dash stay lite? If I jiggle the key the temp gua… read more
Todd M
Todd M
Owner
ASE Certification
1,299 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