When should water pump be replaced? Im no expert but....
07-08-19, 03:35 PM
#61
Driver School Candidate
There are no change in forces. You should replace the water pump because that is usually what fails first (not the belt). If the bearing in the water pump fails and the engine jumps time, you are looking at replacing the engine due to the catastrophic damage that will occur. This is regarding the LS430. Some other engines that are not interference, you can get by without replacing the water pump, but I would always replace the w/p with the belt because it will save you money in the long run. Also replace cam seals while you're there.
07-08-19, 04:58 PM
#62
Moderator
There are no change in forces. You should replace the water pump because that is usually what fails first (not the belt). If the bearing in the water pump fails and the engine jumps time, you are looking at replacing the engine due to the catastrophic damage that will occur. This is regarding the LS430. Some other engines that are not interference, you can get by without replacing the water pump, but I would always replace the w/p with the belt because it will save you money in the long run. Also replace cam seals while you're there.
Welcome to the forum Kiwi !!
07-10-19, 04:30 AM
#63
Lexus Fanatic
A couple of things that I learned. The dealer will have a 90k, and a 180k, different prices. The 90k is already $1,400, and it doesn't even include the tensioner. Why do all that labor and not do it?
As the OP or someone mentioned originally in this thread, I too have a 20% dealer discount on service that was emailed to me, but look at the above prices, even at 80% they are super steep. maybe the 20% would work on a nuisance job where you have to dispose of coolant or brake fluid or something like that.....
I think the people who have it best for service other than DIY are in Cali. where Toyota specialists abound....they get the best service and best prices!
As the OP or someone mentioned originally in this thread, I too have a 20% dealer discount on service that was emailed to me, but look at the above prices, even at 80% they are super steep. maybe the 20% would work on a nuisance job where you have to dispose of coolant or brake fluid or something like that.....
I think the people who have it best for service other than DIY are in Cali. where Toyota specialists abound....they get the best service and best prices!
07-10-19, 12:28 PM
#64
Lexus Champion
When you don't know if waterpump.was ever replaced
The previous owner Autozoned my 1999 LS400....
I replaced an aftermarket (not Aisin) waterpump which failed (leaking) after 25,000 miles...
https://www.clublexus.com/forums/ls-...-bearings.html
If you have a non Aisin aftermarket waterpump installed, then replace it immediately.
If you have 60,000 or more miles (belt degrades with age) and are unsure whether the waterpump and timing belt was ever serviced, then do so immediately.
DO NOT use the timing belt provided with Rock Auto Aisin timing/waterpump kit, but purchase timing belt from Toyota or Lexus.
https://www.clublexus.com/forums/ls-...eficiency.html
I replaced an aftermarket (not Aisin) waterpump which failed (leaking) after 25,000 miles...
https://www.clublexus.com/forums/ls-...-bearings.html
If you have a non Aisin aftermarket waterpump installed, then replace it immediately.
If you have 60,000 or more miles (belt degrades with age) and are unsure whether the waterpump and timing belt was ever serviced, then do so immediately.
DO NOT use the timing belt provided with Rock Auto Aisin timing/waterpump kit, but purchase timing belt from Toyota or Lexus.
https://www.clublexus.com/forums/ls-...eficiency.html
Last edited by YODAONE; 07-10-19 at 12:31 PM.
07-10-19, 12:48 PM
#65
There are no change in forces. You should replace the water pump because that is usually what fails first (not the belt). If the bearing in the water pump fails and the engine jumps time, you are looking at replacing the engine due to the catastrophic damage that will occur. This is regarding the LS430. Some other engines that are not interference, you can get by without replacing the water pump, but I would always replace the w/p with the belt because it will save you money in the long run. Also replace cam seals while you're there.
07-10-19, 02:18 PM
#66
Lexus Champion
Climate vehicle operates and age is another factor.
Replaced cam seals on a 1998 LS400..and it is a bit nerve racking first go around.
If well above average mechanical ability and possess a shop manual then it makes sense.
Otherwise, NOT a do-it-yourself project.
While camshafts are being removed, valve lash adjustment is in order...
Also... Spark plug tube seals, valve cover gaskets, valve cover bolt seals (qty 18) VVTi o-rings.
Use only OEM dealer purchased parts factory and FIPG (form in place gasket).
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