Timng Belt, Water Pump And Bypass

[ale]

The time has come 60,000 mile I'm Changing the water pump while changing the timing belt and tensioner on my is200 2003 , but was told to change bypass pipe(on the water pump ) as well , is this small pipe about 2inch long , your knowledge would be appreciated

Thank you for your time

[DJ Wozza]

I believe so, the local Lexus parts dept should be able to help.

It's good practice to change the pump (depending on age) at the same time,

plus also the idler pulley too.

Where in London are you ? Are you doing the job yourself ?

[wildybeast]

hi.a few people have mentioned changing the is 200 water pump.is there a common fault with them or just a precausionary measure.is there a visible fault or an internal one .for example does the impellor break.or something like.?

[Carles]

This is the by-pass seal

More info, pics and links to online manual:

http://www.lexusownersclub.co.uk/forum/ind...c=52157&hl=

Seems a bit hard to done yourself if you haven't a basic mechanical level, I think it's a 7 on a 1-10 scale, see the excellent tuto (thanks rig-pig)

http://www.lexusownersclub.co.uk/forum/ind...showtopic=54051

[Carles]

hi.a few people have mentioned changing the is 200 water pump.is there a common fault with them or just a precausionary measure.is there a visible fault or an internal one .for example does the impellor break.or something like.?

http://www.bahamutcars.com/workshop/IS_98-...e/m_co_0006.pdf

[DJ Wozza]

it's basically a precaution, due to the position of the water pump, everything you need to move/remove for the

timing belt, has to be done again to replace the water pump, so it will save you a lot of labour if you can afford

to replace it.

[ale]

Thank you all for your time in responding , will now tackle the job in hand,

And DJ WOZZA i'm in Eltham

[spikes]

best to change water pump while your doing the belt etc

[DJ Wozza]

will invite you via PM to some of the reasonably local meets when they come up :D

[ale]

will invite you via PM to some of the reasonably local meets when they come up :D

Thank you

Would like that..

[DJ Wozza]

I'm in Bromley so if you fance a ride in a Supercharged IS200 let me know :D

Ace Cafe Lexus Meet 20th December is the next one that springs to mind

[Steviewevie]

Which is the bypass pipe in that picture ?

I'm getting my cam belt done soon, and have a new water pump to be fitted at the same time. I don't have a bypass pipe though, what part do I need exactly, do I just tell my Lexus dealer I need a "water pump bypass pipe" ? Should I get it done at the same time ?

Edit - Just noticed Carles mentioned the "bypass seal"

[Carles]

Which is the bypass pipe in that picture ?

I'm getting my cam belt done soon, and have a new water pump to be fitted at the same time. I don't have a bypass pipe though, what part do I need exactly, do I just tell my Lexus dealer I need a "water pump bypass pipe" ? Should I get it done at the same time ?

Edit - Just noticed Carles mentioned the "bypass seal"

Yes, see the pink colour of coolant in that.

The toyota part number is 90301-17009 (x2) in years 9901 to 0207 and 90301-17016 in 0207-->onwards.

[Steviewevie]

Yes, see the pink colour of coolant in that.

The bit above the water pump that looks like it's been leaking ?

The toyota part number is 90301-17009 (x2) in years 9901 to 0207 and 90301-17016 in 0207-->onwards.

ok, but I can't see that part number in the picture. Am I missing something ? Sorry, I don't quite understand

[Carles]

Yes, see the pink colour of coolant in that.

The bit above the water pump that looks like it's been leaking ?

Yes.

The toyota part number is 90301-17009 (x2) in years 9901 to 0207 and 90301-17016 in 0207-->onwards.

ok, but I can't see that part number in the picture. Am I missing something ? Sorry, I don't quite understand

The both parts with 16268F number.

[Steviewevie]

Mine is a 1999 model. So I need to order 2 x 90301-17009 ? Thanks.

[Steviewevie]

Sorry for all the questions, but if I order those seals does the pipe come with it ? Some posters have talked about replacing the "bypass pipe", I presume that is the bit between the two seals ? Bit confused, sorry :duh:

[Carles]

Mine is a 1999 model. So I need to order 2 x 90301-17009 ? Thanks.

Yes.

Sorry for all the questions, but if I order those seals does the pipe come with it ?

No.

Some posters have talked about replacing the "bypass pipe", I presume that is the bit between the two seals ? Bit confused, sorry :duh:

Yes, but isn't necessary, replacing just the seals.

Anyway do not worry, if one day have leak is easy to change it, not like the pump.

[Steviewevie]

Anyway do not worry, if one day have leak is easy to change it, not like the pump.

Ah ok. So to replace the seal you don't need to take everything apart ? So I shouldn't worry if I'm changing the pump (which is purely precautionary anyway, I can't see any leaks but it may well start to leak before the next time the cam belt needs changing).

Many thanks for all the answers ! :D

[Steviewevie]

Looking again under the bonnet, after having seen the pics in this thread, I *can* see some signs of leakage from around the bypass pipe/seals (though not the pump itself). So I think I might as well get them replaced at the same time as the pump.