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Technicaldan
Technicaldan, UK Car Mechanic
Category: UK Car
Satisfied Customers: 110
Experience:  Accredited
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MY IS 220D TEMPERATURE GAUGE KEEPS RISING UNDER LOAD THEN

Customer Question

MY IS 220D TEMPERATURE GAUGE KEEPS RISING UNDER LOAD THEN SLOWLY RETURNS TO NORMAL
JA: How many miles are on the car? Have you checked the coolant level?
Customer: 112K 60 PLATE ,YES WHEN I LOOK AT THE HEADER TANK IT LOOKS EMPTY , BUT WHEN I RELEASE THE CAP. PRESSURE RELEASES AND THE COOLANT BUBBLES BACK UP TO THE NORMAL LEVEL
JA: What is the model of your '60 Lexus?
Customer: IS 220D F SPORT . AND THERE IS STILL PRESSURE IN THE HEADER TANK 24HRS AFTER BEING SAT DOING NOTHING
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: MAYBE ! JUST DOING THE PRELIMINARIES ON HERE NOW
JA: Anything else you want the mechanic to know before I connect you?
Customer: THATS ABOUT IT
Submitted: 9 months ago.
Category: UK Car
Expert:  Technicaldan replied 9 months ago.

Hi, I would consider replacing the coolant cap, this is a pressure regulator valve and coolant cap in one.

The purpose of these, is to maintain the correct pressure in the coolant system, allowing pressure off when it is in excess, then allowing the air back in to defeat the vacuum as it cools.

I suspect this may be faulty.

If you look at the cap, you may notice a pressure rating.

Here is a link to one on ebay uk, http://www.ebay.co.uk/itm/like/291778393214?clk_rvr_id=1111351461216&vectorid=229508&lgeo=1&item=291778393214&rmvSB=true

http://www.ebay.co.uk/itm/like/291778393214?clk_rvr_id=1111351461216&vectorid=229508&lgeo=1&item=291778393214&rmvSB=true

I hope this helps you ;)

Expert:  Technicaldan replied 9 months ago.

If this is all you need, please rate 5 stars, if you need further information relating, let me know ;)