Radiator overflow boiling over and heater not generating heat

Asked by Oct 20, 2016 at 01:29 PM about the 2006 Lexus GS 300 RWD

Question type: Maintenance & Repair

The CAr is not overheating, but after commuite it was boiling over and the heater is not generating heat. Replaced radiator cap.. yet still no heat through heater. Not sure if it will over boil yet?

1 Answer

95,055

I suspect a blown headgasket and the combustion gasses are accumulating in the heater core forcing the coolant out of the core itself thus causing an air pocket and you boiling condition. A block check test will tell the tale.

Your Answer

Add photo

Related Questions

Search Lexus GS 300 Questions

Lexus GS 300 Experts

#1 Tom Demyan
Tom Demyan
Reputation 350
#2 juniorsheld
juniorsheld
Reputation 230
#3 kbro
kbro
Reputation 160
View All

Related Models For Sale

Used Lexus GS 350
104 Great Deals out of 3,797 listings starting at $6,990
Used Lexus GS 430
3 Great Deals out of 111 listings starting at $2,900
Used Lexus ES 350
227 Great Deals out of 16,102 listings starting at $4,997
Used Lexus IS 250
178 Great Deals out of 4,912 listings starting at $4,300
Used Lexus LS 460
63 Great Deals out of 2,514 listings starting at $7,995
Used Lexus IS 300
10 Great Deals out of 2,752 listings starting at $2,985
Used Lexus IS 350
52 Great Deals out of 1,560 listings starting at $4,995
Used Lexus LS 430
34 Great Deals out of 854 listings starting at $3,298
Used Honda Accord
948 Great Deals out of 77,739 listings starting at $899
Used Toyota Camry
1,104 Great Deals out of 90,761 listings starting at $1,599
Used BMW 3 Series
941 Great Deals out of 30,258 listings starting at $1,000
Used INFINITI G35
86 Great Deals out of 3,186 listings starting at $2,000
Used Acura TL
178 Great Deals out of 5,745 listings starting at $1,100
Used Lexus ES 330
33 Great Deals out of 1,133 listings starting at $1,500

Used Cars For Sale

2006 Lexus GS 300 RWD For Sale
13 Great Deals out of 184 listings starting at $5,000

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.