Bmw overheating

Asked by Sep 03, 2016 at 05:51 PM about the 2003 BMW 3 Series 325i Sedan RWD

Question type: Maintenance & Repair

I replaced my radiator, thermostat, water
pump, new upper and lower radiator hoses
and new coolant reservoir. It still wants to
overheat when I drive on the interstate and
It's full of coolant and my thermostat opens
up, why am I still having this overheating

5 Answers


Did you bleed the system properly? Air in the system will cause an overheating issue... Q8

1 of 1 people found this helpful.

check to see if you have a mechanical or an electric fan and ensure that it is, 1 turning the correct direction and 2 that it turns on when the car reaches operating temperature, if its not you may have an electrical gremlin or your temperature sensor isn't functioning properly


Check your radiator fans as mentioned above.

My fan is turning the proper direction and the sensor seems to b working properly as well as it still sends messages to the computer when the temperature rises. I don't know what the hell it could b!! I've bled it, changed parts, checked the fan and it still overheats!?

Some times the problem is the head gasket. If the problem is not big, you can solve the problem with a liquid that contain little pieces of metal that fill the gap that the head gasket have. I did this solution two times with good results, and one time with no results. The name of the product is bar's leaks,

Your Answer

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 33,171 nationwide 3 Series listings starting at $1,000.


BMW 3 Series Experts

  • #1
    Tom Demyan
  • #2
    Robert Charlson
  • #3
    Matt Mankinen
View All

Related Models For Sale

Used BMW 5 Series
402 Great Deals out of 16,247 listings starting at $1,650
Used BMW M3
15 Great Deals out of 1,751 listings starting at $5,495
Used Mercedes-Benz C-Class
592 Great Deals out of 25,690 listings starting at $1,950
Used Audi A4
204 Great Deals out of 12,404 listings starting at $1,500
Used Ford Mustang
274 Great Deals out of 38,355 listings starting at $1,995
Used Honda Accord
524 Great Deals out of 95,306 listings starting at $1,300
Used BMW 7 Series
120 Great Deals out of 5,028 listings starting at $3,950
Used BMW X5
333 Great Deals out of 17,330 listings starting at $2,991
Used Mercedes-Benz E-Class
397 Great Deals out of 20,653 listings starting at $1,950
Used BMW 6 Series
49 Great Deals out of 2,417 listings starting at $5,995
Used Chevrolet Camaro
236 Great Deals out of 30,155 listings starting at $4,980
Used Honda Civic
356 Great Deals out of 53,229 listings starting at $1,200

Used Cars For Sale

2018 BMW 3 Series For Sale
74 Great Deals out of 8,661 listings starting at $27,935
2017 BMW 3 Series For Sale
95 Great Deals out of 2,583 listings starting at $24,399
2016 BMW 3 Series For Sale
40 Great Deals out of 990 listings starting at $15,350
2015 BMW 3 Series For Sale
164 Great Deals out of 4,211 listings starting at $13,999
2014 BMW 3 Series For Sale
178 Great Deals out of 3,161 listings starting at $9,977

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.