my 92 lexus sc400 is starts to become real hot inside.... why? heater is off, and it seems to still have some heat coming from under the center dash area while AC is on. Weird...

Asked by Oct 20, 2012 at 09:55 AM about the 1992 Lexus SC 400 RWD

Question type: Maintenance & Repair

1 Answer

235

You may have a failed heater control valve, stuck open. It is on the firewall to the left of the intake manifold, you'll see the hoses going in and out of it. They factory pieces are pricey, about $325! You can get around that by using a Motorcraft YG-368 replacement and installing it with the hose slightly turned.

3 of 3 people found this helpful.

Your Answer

Lexus SC 400 Experts

  • #1
    Tom Demyan
    Reputation
    70
  • #1
    Mick Ireland
    Reputation
    70
  • #3
    Russell Murray
    Reputation
    60
View All

Related Models For Sale

Used Lexus SC 300
29 listings
Used Lexus LS 400
168 listings starting at $1,991
Used Lexus GS 300
19 Great Deals out of 656 listings starting at $2,750
Used BMW 3 Series
1,039 Great Deals out of 33,670 listings starting at $1,000
Used BMW 7 Series
99 Great Deals out of 5,281 listings starting at $2,999
Used Chevrolet Camaro
461 Great Deals out of 31,232 listings starting at $1,450

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.