Radiator replacement

Tiny
PCULQUI
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 116,000 MILES
If my radiator is leaking, aside from replacing the radiator, should I replace the 2 hoses for the radiator as well as the thermostat and gasket?
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Wednesday, March 17th, 2021 AT 8:54 AM

7 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good afternoon,

I attached the procedure below for the radiator replacement.

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

https://www.2carpros.com/articles/replace-radiator-hoses

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Yes, replace both hoses and the thermostat as well.

https://www.2carpros.com/articles/replace-thermostat

Roy

NO.2 RADIATOR ASSEMBLY
REPLACEMENT
1. DRAIN COOLANT
2. DISCONNECT RADIATOR HOSE INLET
3. DISCONNECT RADIATOR HOSE OUTLET
4. DISCONNECT OIL COOLER INLET HOSE NO.1
5. DISCONNECT OIL COOLER OUTLET HOSE NO.1
6. REMOVE FRONT BUMPER COVER
7. REMOVE AIR CLEANER CAP SUB-ASSEMBLY
8. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
9. REMOVE AIR CLEANER INLET NO.2
10. REMOVE AIR CLEANER CASE
11. REMOVE AIR CLEANER BRACKET
12. REMOVE AIR CLEANER INLET NO.1

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13. REMOVE HOOD LOCK RELEASE LEVER PROTECTOR
a. Release the 4 claws and remove the hood lock release lever protector.

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14. REMOVE HOOD LOCK ASSEMBLY
a. Remove the 3 bolts and separate hood lock.

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15. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY UPPER
a. Disconnect the horn connectors.
b. Remove the 5 bolts and the radiator upper support.

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16. REMOVE FAN SHROUD
a. Disconnect the engine coolant reservoir hose.
b. Disconnect the fan motor connector.
c. Remove the 4 bolts and the fan shroud.

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17. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY UPPER LH
a. Remove the 3 bolts and the radiator support upper LH.

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18. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY UPPER RH
a. Remove the 3 bolts and the radiator support upper RH.

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19. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY LOWER RH
a. Remove the 3 bolts and the radiator support lower LH.

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20. REMOVE RADIATOR SUPPORT SUB-ASSEMBLY LOWER RH
a. Remove the 3 bolts and the radiator support lower RH.
21. REMOVE NO.2 RADIATOR ASSEMBLY
22. INSTALL NO.2 RADIATOR ASSEMBLY

Thermostat

THERMOSTAT
REPLACEMENT
1. DRAIN COOLANT
2. REMOVE BATTERY
3. REMOVE AIR CLEANER CAP SUB-ASSEMBLY
4. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
5. REMOVE AIR CLEANER INLET NO.2
6. REMOVE AIR CLEANER CASE
7. REMOVE AIR CLEANER BRACKET
8. REMOVE AIR CLEANER INLET NO.1
9. REMOVE STARTER ASSEMBLY
10. DISCONNECT RADIATOR HOSE OUTLET

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11. REMOVE WATER INLET
a. Disconnect the wire harness clamp.
b. Remove the bolts, the 3 nuts and the water inlet.
12. REMOVE THERMOSTAT
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Wednesday, March 17th, 2021 AT 3:35 PM
Tiny
PCULQUI
  • MEMBER
If I order from rockauto, what brand or description of thermostat, gasket and hoses should I get?
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Thursday, March 18th, 2021 AT 10:22 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, I attached the parts below for you to order.

Roy
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Thursday, March 18th, 2021 AT 12:37 PM
Tiny
PCULQUI
  • MEMBER
What is the spectra premium CU2925?
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Thursday, March 18th, 2021 AT 4:41 PM
Tiny
ASEMASTER6371
  • EXPERT
That is the brand and part number for the radiator itself.

Roy
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Friday, March 19th, 2021 AT 2:27 AM
Tiny
PCULQUI
  • MEMBER
I already had purchased a radiator, will these hoses fit my radiator?
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Saturday, March 20th, 2021 AT 10:12 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, you asked about the parts and I attached them. Assuming you have the correct radiator, yes, they will fit. Match them up to the old ones.

Roy
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Saturday, March 20th, 2021 AT 10:14 AM

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