Thermostat or radiator

Asked by Phillip Apr 30, 2020 at 10:08 PM about the 2008 Lexus RX 350 AWD

Question type: Maintenance & Repair

When driving I just notice the thermostat
needle go up to the red when I accelerate in
go down to the midpoint ont the reader when I
take my foot of the gas need to know is this a
thermostat issue or radiator issue

2 Answers
70

Notasheep answered 4 years ago

Next time it does it ck the upper and lower radiator hoses. If one is hot and other is cooler, test the thermostat. Pull it out, boil some water, place it in and see if it opens and closes then when removed. If not, change it.

Mark helpful

GuruM9SS9 answered 4 years ago

are you sure that the radiator is full of fluid? dont just rely on the overflow bottle. with the engine cold, take off the radiator cap and make sure.

Mark helpful

Your Answer:

Related Questions

  • Thermostat or radiator 2 Answers

    When driving I just notice the thermostat needle go up to the red when I accelerate in go down to the midpoint ont the reader when I take my foot of the gas need to know is this a thermostat issue...

    2008 Lexus RX 350 AWD

    -

    Maintenance & Repair

  • issue with thermostat reader 3 Answers

    how do i know if the problem is the radiator or thermostat

    2008 Lexus RX 350 FWD

    -

    Maintenance & Repair

  • 2006 RX 330 AWD timing belt or chain? 1 Answer

    Does RX 330 AWD has a Timing belt or Timing Chain?

    2006 Lexus RX 330 AWD

    -

    Maintenance & Repair

  • 2000 RX 300 engine dead. Replace or sell value as mechanics special? 2 Answers

    I have a 2000 RX300 w 217K miles. the body and interior are in very good condition. NO damage on metal (but minor bumper damage). The engine runs badly, mechanic says it's not worth fixing ~ one c...

    2000 Lexus RX 300 FWD

    -

    Maintenance & Repair

  • Power Windows REgulator or Switches 1 Answer

    About a year ago both the front power windows were intermittent, then eventually stuck in the down position, repeated switch manipulation would sometimes work from driver or front passenger switch . R...

    2000 Lexus RX 300 FWD

    -

    Maintenance & Repair

RX

Looking for a Used RX in your area?

CarGurus has 858 nationwide RX listings starting at $3,995.

Postal Code:

Shortcuts

Search Lexus RX Questions

CarGurus Experts

  • #1
    tenspeed
    Reputation
    8,390
  • #2
    Papaobewon
    Reputation
    5,620
  • #3
    Nicolaos Vlachos
    Reputation
    5,170
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Lexus RX Hybrid
11 Great Deals out of 500 listings starting at $4,998
Used Lexus GX
4 Great Deals out of 54 listings starting at $13,800
Used Toyota Highlander
32 Great Deals out of 737 listings starting at $2,495
Used Lexus ES
15 Great Deals out of 192 listings starting at $3,888
Used Acura MDX
37 Great Deals out of 756 listings starting at $6,495
Used Toyota RAV4
100 Great Deals out of 2,089 listings starting at $3,888
Used Acura RDX
31 Great Deals out of 945 listings starting at $4,999
Used Lexus LX
4 Great Deals out of 27 listings starting at $28,900
Used Toyota 4Runner
12 Great Deals out of 309 listings starting at $9,700
Used Lexus IS
18 Great Deals out of 305 listings starting at $6,449
Used Lexus LS
28 listings starting at $9,995
Used Honda CR-V
99 Great Deals out of 3,843 listings starting at $1,795
Used BMW X5
38 Great Deals out of 1,133 listings starting at $3,995
Used Toyota Camry
48 Great Deals out of 979 listings starting at $2,212

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.