Question about 1998 Lexus Gs 300

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Replacing water pump in 98 Lex GS300

I am trying to change the water pump in a 1999 Lexus GS300. It has a 3.0/V6 engine. Is it possible to take the crank shaft pulley & dampner pulley off without damaging the timing belt?

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  • Anonymous Sep 04, 2008

    I TOOK THE WATER PUMP OFF TODAy u have to take everthing off just to put the water pump on and off but i missed up the timing and having trouble trying to get it on track again,,,,,,, let the mechanics do it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

  • Anonymous Mar 14, 2014

    1993 Lexus GS300 Ignition Timing

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Removal of the crankshaft front pulley/damper can be removed without any damage being caused to the cam belt.
They are a good fit on the shaft, I personaly use a lead tup, weighs 2lbs and will not damage anything if used properly.
Tap equaly all the way round the pulley, that should be ok.

Posted on Jan 12, 2009

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Hi,

I bought this old car and the seller did not provide a manual book with it, I got the luggage compartment not working over a sudden after i bought the car, also the keys are not turning, so i can't open the luggage at all. I tried to look for the fuse box maybe i could find the fuse burnt but i can't find the wright location or the fuse.
I need a diagram for the fuse box if it's inside the car not at the back, and if it's on the back how can i open the lauggage then?

Nass

Posted on Oct 20, 2008

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Posted on Jan 02, 2017

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2 Answers

98 GS300 HEAT


as in no buttons or what.. all electronic controls?? some have 2 buttons.. temp up and temp down..if it shows a number..raise it..

Dec 09, 2013 | 1998 Lexus Gs 300

2 Answers

Do I chanage water pump when changing timing belt on 2002 lexus GS300?


Hi there,

Most Japanese designed engines have an internally mounted water pump, usually driven by the cambelt.

When we talk in terms of cam design, there are two types of engines: a) Interference and b) non-interference.

An interference egine means - if the cambelt were to break whilst engine is running, there will be major internal engine damage.
A non-interference engine means - if the cambelt were to break whilst engine is running, there will NOT be any serious internal damage to the engine.

Note: the GS300 engine (3.0L 6-cyl) is considered a Non-Interference engine.

So, one of the most critical compenents which MUST be changed, is the cambelt itself. Most manufacturers recommend changing this belt every 90,000 - 100,000km's (80,000 miles). If you have a non-interference engine, this period is not as critical, but should still be changed soon, to avoid the inconvenience of a breakdown whilst travelling.

The 2nd critical compenent is the Water Pump. The worst possible outcome of a failed waterpump, is your engine will suddenly drain of all coolant, resulting in serious overheating, causing serious internal damage to your engine.

Although there is no specified time to change the waterpump, a waterpump endures wear and tear like any component and lifespan can reduce rapidly beyond 100,000km's (80,000 mles). As the waterpump is situated next to the cambelt, it is a general rule to change out both cambelt and waterpump at the same time.

The majority of the cost to replace the cambelt, is in labor (ie opening the engine etc). If you choose to replace only one of these components, you will need to be prepared to pay for same procedure again in future, to replace the 2nd component.

Therefore, it can be more economical in the long term, to have both components changed together.

Hope this helps...


Scott




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May 30, 2011 | Lexus GS 300 Cars & Trucks

2 Answers

1993 lexus gs300 keeps running hot. CHanged radiator, thermostat, water pump and all fans still runs hot after a 30 mile trip.


compression test most likely blown head but first why did you change all this stuff if the cause was overheating then am suspecting a blown head gasket

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1 Answer

Timing belt should water pump be changed as well?


If it's a ES300 yes replace water pump, due to timing belt drives water pump, if it's a GS300 no need to replace water pump, not driven by timing belt.

Oct 20, 2010 | 2002 Lexus IS 300

1 Answer

1999 gs300 shows code p1349 and the engine runs really rough at idle , runs fine off idle


Its a Oil Control Valve most likely. Get the valve. Its like 100 from Lexus. Mine did the exact same thing with that code. GS300

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try to take cables off battery let sit for five or tem min. then put + on first

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sounds like the pump and i think on moust lexus and toyota pump is in the gas tank under your back seat

Dec 31, 2009 | 1999 Lexus Gs 300

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3.2L v6 1999 chysler concorde i cant find the water pump is there a site where i can see a diagram of the engine..


I havent looked at that car you mention but since you worded it like you did , it reminds me of the second volvo I had (98 model). the water pump was located behind the timing belt cover and actually driven be the timing belt... really. I thought this was of a poor design myself. I bet yours is the same. good luck replacing the water pump. the volvo was one BIG pain in the ...........

Jun 10, 2009 | 1999 Chrysler Concorde

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