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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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?


Posted on Oct 20, 2008

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I have a 1999 Chrysler Cirrus. The serpentine belt came off that goes to the alternator and the air conditioner unit, I was told by a mechanic that the dampner pulley is bad. Some autopart sites have a...

Hi, assuming you have the 2.5 liter engine, your damper is integral to the pulley assembly as shown in the second figure below, so there is only one part involved. You can see an example of the part here:
If you look carefully at the pic below, you can see the rubber torus inside the pulley. The rubber is what fails and causes the pulley to wobble. You may need to borrow a puller to get the pulley off.

2.5L Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2. Disconnect battery negative cable from remote negative terminal on shock tower and properly isolate to prevent accidental reconnection.
  3. Remove or disconnect the following:

    Belt splash shield Accessory drive belts. Refer to Belts. Crankshaft center bolt and remove crankshaft damper.


    Fig. Splash shield removal-2.5L engine


    Fig. Crank damper and bolt- 2.5L engine

To install:
  1. Clean crankshaft snout and crankshaft damper bore.
  2. Install or connect the following:

    Crankshaft damper. Crankshaft bolt and torque to 143 ft. lbs. (182 Nm) Accessory drive belts. Refer to Belts. Belt splash shield

Oct 05, 2011 | 1999 Chrysler Cirrus

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I have a leak that is coming out of the bottom of the engine under the crank shaft pulley....the engine is sideway mounted. I thought it had to be oil since I see it coming out from underneath the crank...

Please do try this steps:

  • Please do check the hose is connected properly and its not loose.
  • Also make sure that there is no leak and if the hose are old replace it with the new one.
Please check it first to avoid a lot cost of money. If you have additional questions feel free to reply to this solution. Have a nice day.

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Motor making a loud tapping noise

Please open the bonnett and identify the tapping noise before we can decide on a possible fault.
It can be the slapping of belt, the water pump, the idler pulley, alternator.
If not the noise may be coming from the engine, possible tappet, cam noise or crank pulley being loose.
It is better you carefully hear the location of noise.A possible hint, spray some water to the belt, pulley, water pump, alternator pulley to see if the noise dies off . if so replace the confirmed part.
If within engine, teh section has to be confirmed but only after removing section.
Hope this help to identify. good day

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Location of the water pump

Its in with the timing belt
The pump cost about $90cnd. you don't have to replace the timing belt if it is in good condition although I would recommend it. First you must remove the passenger side front wheel, and the splash guard. Then you must take of the accesory drive belts. The one on the alternator, and the one on the powersteering/air conditioner. Then you must take off the timing belt cover, mark your timing, remove the tensioner and the belt the camshaft gears the idler pulley and the crank shaft dampner. Then the rear timing belt cover comes off and you can access the water pump. Install the new pump and reassemble. Make sure the crank dampner and the camshaft sprokets are seated ALL THE WAY BACK, (or you'll cause yourself all kinds of problems.) When the timing belt goes back on make sure you line up the timing correctly, you can't start the engine till it is all back together and if your timing is out it won't run right or might not even start. I would not recommend taking on this job if you don't have the slightest clue of what you are doing as there is a lot to go wrong (timing is set correctly can screw up your engine), and do attempt it if you don't intend spending alot (like 10hrs) of time on it to do it right.

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Is this a V6 or 4cyl???>>>(V6) This requires removing the Harmonic balancer (crankshaft pulley). Remove (R) front wheel, remove engine splash Guard, Remove crank pulley, remove lower timing belt cover. The Crank sensor is located behind the crank shaft pulley!! I highly recommend having this done by a certified tech, requires special tools. Hopefully this helps!!

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The best bet is is for you to buy a Haynes manual for your car. Try autozone; generally available for around $20.

I am not familar with your specific car/ngine but I am familar with Lits in general. I believe your engine is tranvese mounted which means the fan belts are located on one end of the engine (left or right). The water pump is powered by a fan belt so go to the end with the fan belts. You should have an alternator, power steerring, air conditioning and crank shaft pulley that the belts run on. There should aslo be a pulley for the water pump. use the process of elimination to ID the water pump.

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Timing marks

this is a complex fix. if the timing belt is off, you will have to align both of the cams (V6??) to their respective notches on the back plate that protects the belt. You must also align the crank shaft to TDC, top dead center. Put the belt on (with tensioner off) then put tensioner on and release allen key. turn the engine by hand or using the starter two full rotations, the notches on the tops of the cam pulleys should be perfectly alligned with the notches on the back plate. if not, you missed a notch in the wrong spot and have to try again.

i've done this twice, once on a lexus es250 v6, and again on my 94 camry, its one of the hardest things i've ever done when repairing cars. be patient, have a friend help, don't get frustrated. if you really cant get it, have a mechanic come to your house and drop him a few bills to help you. you'll be glad you did


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