Too much pressure in cooling system 01 BMW 740il


Asked by Sep 14, 2017 at 05:27 PM about the 2001 BMW 7 Series 740iL RWD

Question type: Maintenance & Repair

What can I do?  On a 01 BMW 740il, radiator was replaced about a year ago.  Thermostat was replaced a few months ago. Front upper radiator hose cracked (plastic connector).  Replaced. Rear hose connector cracked. Replaced. Oil was overflowing from filter.  Did an oil change and replaced seal and filter.  Radiator just cracked today.  What is causing too much pressure to make all the cooling system to crack?  

2 Answers


I have just learned from the Local BMW dealer that they replace all components the same time. I am using some after market and some OEM parts. There hasn't been any more leaks since replacing the hoses other than the radiator. I have been bleeding the system after changing each part. I may need to do better research on properly bleeding. I will be changing the bottle today.

1 people found this helpful.

Too much pressure implies that the radiator cap is not functioning properly.

Your Answer:

7 Series

Looking for a Used 7 Series in your area?

CarGurus has 218 nationwide 7 Series listings starting at $5,000.

Postal Code:

BMW 7 Series Experts

  • #1
  • #2
    Vince Lee
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Mercedes-Benz S-Class
15 Great Deals out of 247 listings starting at $7,900
Used BMW 5 Series
53 Great Deals out of 708 listings starting at $2,966
Used Mercedes-Benz E-Class
50 Great Deals out of 825 listings starting at $4,998
Used BMW X5
72 Great Deals out of 1,232 listings starting at $4,200
Used Audi A8
3 Great Deals out of 73 listings starting at $5,800
Used BMW 3 Series
211 Great Deals out of 2,808 listings starting at $2,495
Used Land Rover Range Rover
15 Great Deals out of 268 listings starting at $8,888
Used Cadillac Escalade
19 Great Deals out of 614 listings starting at $2,900
Used Mercedes-Benz C-Class
111 Great Deals out of 1,790 listings starting at $3,090

Used Cars for Sale

2020 BMW 7 Series For Sale
37 listings starting at $99,999
2019 BMW 7 Series For Sale
11 listings starting at $92,900
2018 BMW 7 Series For Sale
21 listings starting at $61,900
2017 BMW 7 Series For Sale
10 listings starting at $55,900
2016 BMW 7 Series For Sale
3 Great Deals out of 38 listings starting at $45,888

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. Content will be removed if CarGurus becomes aware that it violates our policies.