Water pump replacement
09-24-18, 10:01 AM
#1
Pole Position
Thread Starter
Water pump replacement
Anyone done this yet? Im at 63k miles and wondering if this should be done soon, along with a thermostat and all the drive belts but i dont see any posts about anyone getting it done.
09-24-18, 10:47 AM
#2
Lexus Test Driver
Way too early unless you have some kind of issue
09-24-18, 11:07 AM
#4
Lexus Test Driver
Vehicles with serpentine timing belts (recommended to be replaced around 60k-100k miles) it is often recommended to have the water pump replaced at the same time because replacing the timing belt requires the mechanic to be working right there where the water pump is located, so due to mileage and cost to [only] replace the water pump at possibly some later time you might as well go ahead and replace it at the same time. The Lexus GS 350 has a timing chain that does not require changing like a serpentine timing belt does. Therefore, there is no need to replace the water pump until it shows signs (bearing noise, leakage) that it really needs to be replaced. There should be no more of a reason to replace the water pump before it is necessary than to replace light bulbs or speakers...
09-24-18, 11:29 AM
#5
Vehicles with serpentine timing belts (recommended to be replaced around 60k-100k miles) it is often recommended to have the water pump replaced at the same time because replacing the timing belt requires the mechanic to be working right there where the water pump is located, so due to mileage and cost to [only] replace the water pump at possibly some later time you might as well go ahead and replace it at the same time. The Lexus GS 350 has a timing chain that does not require changing like a serpentine timing belt does. Therefore, there is no need to replace the water pump until it shows signs (bearing noise, leakage) that it really needs to be replaced. There should be no more of a reason to replace the water pump before it is necessary than to replace light bulbs or speakers...
09-24-18, 11:50 AM
#6
Lexus Test Driver
09-24-18, 01:25 PM
#7
Instructor
Vehicles with serpentine timing belts (recommended to be replaced around 60k-100k miles) it is often recommended to have the water pump replaced at the same time because replacing the timing belt requires the mechanic to be working right there where the water pump is located, so due to mileage and cost to [only] replace the water pump at possibly some later time you might as well go ahead and replace it at the same time. The Lexus GS 350 has a timing chain that does not require changing like a serpentine timing belt does. Therefore, there is no need to replace the water pump until it shows signs (bearing noise, leakage) that it really needs to be replaced. There should be no more of a reason to replace the water pump before it is necessary than to replace light bulbs or speakers...
The reason people do water pump at the same time as timing belt service is because you have to remove a ton of stuff to get to the timing belt - and water pump life is typically about the same as the timing belt and relatively cheap in parts cost. As you stated, the GS has a timing chain, so you can wait until signs of leak, and when it does, do yourself a favor and get the thermostat and tensioner done at the same time while you have the coolant out.
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09-24-18, 01:28 PM
#8
Instructor
Luckily the 2GRFSE in pre-refresh 4GS has over 10yrs of history now and I haven't seen this to be an issue amongst the 3GS and 2IS owners.
09-25-18, 12:42 PM
#10
Racer
You could argue the water pump need not be replaced until you see symptoms: higher engine temps, more frequent secondary fan running, leaks.
If you change your coolant on schedule and only log hiway miles, your water pump will likely go well beyond 120k.
If you change your coolant on schedule and only log hiway miles, your water pump will likely go well beyond 120k.
09-26-18, 05:11 AM
#11
I changed out my serpentine belt last night because it was very dry and starting to make noise. While I was in there I checked the water pump for any leaking and play in the pulley. Everything was in good shape and I am at 100,000 miles. This is not something I would personally try and do early or lump in with a 100k/120k service.
09-26-18, 06:36 AM
#12
Instructor
The Toyota Super long life coolant is spec-ed for 120k change isn't it?
09-26-18, 10:28 AM
#13
Racer
09-26-18, 11:26 AM
#14
Lexus Test Driver
09-26-18, 11:30 AM
#15
Lexus Test Driver
That's right. It's an INSPECTION only item at all 30k intervals. It is suggested for replacement at 100k per the service manual.
FACTORY RECOMMENDED Service for 100K Miles /120Months
Print
FACTORY RECOMMENDED Service for 100K Miles /120Months
- Check Installation Of Driver's Floor Mat
- Reset Oil Maintenance Reminder, if Oil was Changed
- Perform Road-Test on Vehicle
- Rotate Tires
- Inspect Visually, Brake Linings/Drums And Brake Pads/Discs
- Inspect Wiper Blades
- Inspect /Adjust All Fluid Levels
(Inspect sealed transmissions, transfer cases, and differentials for signs of leakage. If any leakage from a sealed component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on inspection results.) - Replace Engine Oil And Oil Filter
(Reset "Maint Reqd" Light If Equipped after maintenance at every 5,000 miles.) - Replace Engine Coolant
- Replace Cabin Air Filter (If Equipped)