BMW

BMW questions? Ask a BMW repair Expert for answers.

Ask an Expert,
Get an Answer ASAP!

2002 325i-replaced lower radiator hose with coolant sensor…

Customer Question
2002 325i-replaced lower radiator...

2002 325i-replaced lower radiator hose with coolant sensor as well....filled up reservoir...didn't notice coolant sucking into block once warm so replaced the thermostat/body and refilled. Noticed coolant movement at fill opening. Filled to very top...tried to take a bit of coolant out....then capped it.
Problem is I still have a leak. Dealer I bought car from said he put a new reservoir in it...but may be not? Still has coolant in it...bobber is still sitting in liquid and pops up when I remove the cap. No engine/coolant light coming on and temp needle running right in the middle. No smells of exessive heat or coolant blowing off and engine hood is extremely cool to the touch. My question is.... is it possible to fill the reservoir too much thus creating too much pressure in the system and then it leaks?

Mechanic's Assistant: Where exactly do you think the noise is coming from? And how long has this been going on?

Noise? im leaking coolant

Mechanic's Assistant: What is the model of your '02 BMW?

325i e46 sedan

Mechanic's Assistant: Are you fixing your Sedan yourself? What have you tried so far?

Read my post

Submitted: 8 months ago.Category: BMW
Show More
Show Less
Ask Your Own BMW Question
Answered in 9 minutes by:
1/4/2018
BMW Mechanic: Steve, BMW Expert replied 8 months ago
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 26,100
Experience: BMW Expert
Verified

Hello and welcome,

My name is ***** ***** it will be my pleasure to assist you today.

Ask Your Own BMW Question
BMW Mechanic: Steve, BMW Expert replied 8 months ago

Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you

no, slightly overfilling will not cause it to leak.

you will need to have the system pressure tested to reveal the leak location.
if you need a good non dealer option to cut down on costs, check out www.bimmershops.com or www.bimrs.org for options.

Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.

Ask Your Own BMW Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a bmw mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Steve Your Own Question
Steve
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 26,100
26,100 Satisfied Customers
Experience: BMW Expert

Steve 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

560 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

453 satisfied customers

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

< Previous | Next >

Related BMW Questions
Leaking Hoses replaced after overheating. Filled radiator,
Leaking Hoses replaced after overheating. Filled radiator, no leaks overheats sitting in the driveway. … read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
Think I may know the answer but here goes. Car overheats.
think I may know the answer but here goes. Car overheats. Been going on for awhile. I've replace thermostat, water pump, expansion tank, and thermostat to the transmission. Ran fine for awhile. Over h… read more
Steve
Steve
BMW Expert
Master's Degree
26,100 satisfied customers
528i: About two weeks ago during aXXXXXon the highway
About two weeks ago during aXXXXXon the highway I first noticed the temp gauge needle would drop down to the blue side and goes back to the middle position every few seconds. On my return trip the nee… read more
Steve
Steve
BMW Expert
Master's Degree
26,100 satisfied customers
Have a 2004 bmw 330ci. Vehicle has an overheating issue. Water
Have a 2004 bmw 330ci. Vehicle has an overheating issue. Water pump was changed out prior at another shop. After a bit it started overheating again. Found the fan clutch shot and not pulling any air. … read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
2001 325i: coolant reservoir..assembly, water pump..refill
2001 325i with 88000 miles using a lot of coolant. Replaced coolant reservoir, thermostat assembly, water pump. System sucked in the top hose when thermostat opened during refill process. Temps normal… read more
Steve
Steve
BMW Expert
Master's Degree
26,100 satisfied customers
98 bmw 740il: overheating..an oil change they..mile..radiator
I have 98 bmw 740il that is overheating. I was told that when I got my fluids topped off during an oil change they didn't bleed it... so when I cut the car on the needle goes all the way to hot and in… read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
BMW: same car..the engine temperature gage the needle is in the middle
Regarding the same car BMW E36,in the engine temperature gage the needle is in the middle as far as I remember when the car is in too much traffic.When the car sta car goes in an open way the temperat… read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
1998 BMW 740i: leaks..few minutes..overheat..temperature gauge
I recently purchased a 1998 BMW 740i and within 15 minutes of startup radiator fluid leaks from the top of the radiator... The temperature on the dash starts from the bottom and goes to the middle aft… read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
Radiator..assembly..ive bled the cooling system afterwards
I recently changed my thermostat and the complete thermostat housing. The radiator and fan assembly also... And ive bled the cooling system afterwards. The car still gets extremely hot within 2 to 3 m… read more
Steve
Steve
BMW Expert
Master's Degree
26,100 satisfied customers
Bmw 325i: any leaks and i noticed coolant..antifreeze..runs fine
i have a bmw 325i, 1995, and the coolant just dropped out of the car, i did not notice if it over heated or not according to the thermostat but i would have noticed if it went up. i brought it to my f… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
Considering the purchase of a 2001 330i manual with 86,000
Considering the purchase of a 2001 330i manual with 86,000 miles. What should I look for in terms of potential problems or issues this model has. I have seen a lot on the web about cooling system prob… read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
2005 325i: overheating..I found a samll leak and repared it..overheats
My 2005 325i keeps overheating (fairly fast). I found a samll leak and repared it. It still overheats and the heater does not get hot. I have attempted to bleed the system, but do not get any fluid in… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
1995 525it: cooling..pump hoses,thermostat and radiator..front end
How do I blead a 1995 525it cooling system.I have replaced the pump hoses,thermostat and radiator. Fluid doesn't seem to be getting to inside of the engine. I tried elevating the front end of the car … read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
Driven..light came..Checked coolant level (cold engine) and topped
Driven during summer, garaged in winter. recently the coolant light came on. Checked coolant level (cold engine) and topped off (very little). Wife drove to store (3 -4 miles and back). Check engine l… read more
bimmaster
bimmaster
BMW Technician
Vocational, Technical or Trade Scho
1,838 satisfied customers
My 1997 BMW 528i overheating AGAIN!!! Replaced thermostat,
My 1997 BMW 528i overheating AGAIN!!! Replaced thermostat, coolant sensor, radiatior, all hoses, aux fan appears to be fine and the clutch, how would I try to bleed the air pockets out and could this … read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
1995 325i: parked..leaking..Coolant..the reservoir the next morning
After coming home from a 1.5 hour drive out of town, I parked my 1995 325i and started to unload the car when I heard a stream of fluid leaking onto the ground. Coolant was pooling under the front of … read more
mike
mike
BMW Technician
Associate Degree
694 satisfied customers
bmw x5: my radiator..oil changed..antifreeze would boil..temp guage
I have a bmw x5 and spoke to howie this morning here on just answer about my radiator problem. We got the oil changed yesterday and they removed the cap to check the level, told me it was full and rep… read more
Howie
Howie
BMW Service Technician
Associate Degree
123 satisfied customers
2000 528i: leaking coolant..the expansion tank cap..seam..bled
I have a 2000 528i (118k miles) which seems is leaking coolant out of the expansion tank cap when operating at normal temperature. My old expansion tank developed a crack at the upper seam. I replaced… read more
Howie
Howie
BMW Service Technician
Associate Degree
123 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