Finally, at 116,000 miles, myself and a friend changed the timing belt on my 2001 Sequoia. We started at 2:30 this afternoon, took a 1 1/2 hour break to eat and finished at about 9:00 this evening. We changed the water pump, timing belt, timing belt tensioner, serpentine belt, upper and lower radiator hoses, thermostat, radiator cap, pcv valve, and the fuel filter. The job is actually straightforward but there are a LOT of things that have to be removed from the front of that engine. I did not change any pulleys or oil seals. The water pump looked like new and really did not need changing. The timing belt itself appeared to be in great condition. I'll be watching for any leaks for the next few days but I fell really good about the job and I expect no problems.
thats a big job. im not looking foward to mine in a few years.
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I bought parts in April of 2006 so prices may have gone up. I replaced the timing belt, timing belt tensioner, water pump, water pump gasket, O ring (water pump), O ring (different one for the water pump), lower radiator hose, upper radiator hose, radiator cap, thermostat, thermostat gasket, PCV valve, fuel filter, and serpentine belt. My total cost NOT including coolant, which I had to buy locally, was $284.41 from 1st Toyota Parts (http://www.1sttoyotaparts.com/). The old water pump appeared to be in perfect condition and I don't think it really needed replacement. The only special tool needed was a pulley puller. Removing the crankshaft bolt was a little bit of a challenge. I had an impact wrench but couldn't get the bolt off. After trying for a couple of minutes, we left it alone for about 5 minutes. The next time we put the impact on it, it came right off. The A/C compressor mounting bolts were difficult to remove. Believe it or not, the fuel filter was difficult to replace due to the manner in which it is mounted to the vehicle. There is little room to work. The fuel filter is not a maintenance item as I understand it but I decided to replace it as I plan on keeping the vehicle to 200,000 miles. I elected not to replace pulleys or oil seals while others have replaced these items. Hopefully, I will not have the A/C compressor problems that some with the early model Sequoias have had. So far, our 2001 has been nearly trouble free.
That's the one. It is located under the vehicle on the driver's side. There is not a fuel filter near the engine that I'm aware of. The filter was easy to remove from the fuel line on both the inlet and outlet side. However, the new filter came with a new mounting brakcet. The mounting bracket is held on to the vehicle with two bolts. These two bolts are in a tight area with little working room. I guess we were tired after doing the timing belt and removing the fuel filter mounting bracket was a hassle. We were ready to go home!
I bought parts in April of 2006 so prices may have gone up. I replaced the timing belt, timing belt tensioner, water pump, water pump gasket, O ring (water pump), O ring (different one for the water pump), lower radiator hose, upper radiator hose, radiator cap, thermostat, thermostat gasket, PCV valve, fuel filter, and serpentine belt. My total cost NOT including coolant, which I had to buy locally, was $284.41 from 1st Toyota Parts (http://www.1sttoyotaparts.com/). The old water pump appeared to be in perfect condition and I don't think it really needed replacement. The only special tool needed was a pulley puller. Removing the crankshaft bolt was a little bit of a challenge. I had an impact wrench but couldn't get the bolt off. After trying for a couple of minutes, we left it alone for about 5 minutes. The next time we put the impact on it, it came right off. The A/C compressor mounting bolts were difficult to remove. Believe it or not, the fuel filter was difficult to replace due to the manner in which it is mounted to the vehicle. There is little room to work. The fuel filter is not a maintenance item as I understand it but I decided to replace it as I plan on keeping the vehicle to 200,000 miles. I elected not to replace pulleys or oil seals while others have replaced these items. Hopefully, I will not have the A/C compressor problems that some with the early model Sequoias have had. So far, our 2001 has been nearly trouble free.
Stan
I will be replacing the timing belt on my 2001 Sequoia next weekend. It sounds like you decided to replace some parts that were not necessarily bad but being that you had to take them off to get to the timing belt you just decided to do this....is this right? If I'm replacing my timing belt what parts should I consider replacing additionally? I've owned a 97 4Runner & a 98 Tacoma & both of those vehicles needed water pumps replaced at around 180,000 miles? I'm pretty mechanically inclined to do most of the work on my vehicles but I have yet to look closely under the hood of the Sequoia w/ 133,000 miles on it so any advice on additional parts I should replace as long as I'm digging into this that you could recommend I would really appreciate it! THANKS!
I will be replacing the timing belt on my 2001 Sequoia next weekend. It sounds like you decided to replace some parts that were not necessarily bad but being that you had to take them off to get to the timing belt you just decided to do this....is this right? If I'm replacing my timing belt what parts should I consider replacing additionally? I've owned a 97 4Runner & a 98 Tacoma & both of those vehicles needed water pumps replaced at around 180,000 miles? I'm pretty mechanically inclined to do most of the work on my vehicles but I have yet to look closely under the hood of the Sequoia w/ 133,000 miles on it so any advice on additional parts I should replace as long as I'm digging into this that you could recommend I would really appreciate it! THANKS!
You should change the Water Pump, Thermostat, upper and lower radiator hoses and the drive belt. Might as well change the antifreeze too. Johnnnny
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2004 Ford Lightning (Sonic Blue)
2003 Cobra with LOTS of work : ) (BLACK)
1996 Cobra (White)
1999 Tacoma 4 wheel drive (Purple in Color)
2002 Tundra Limited (Dark Green or Jade In Color)
2002 Chevy Corvette Z06 (Candy Apple Red)
2003 HighLander Limited (Silver In Color)
2005 Sequoia Limited (Phantom Grey)
You should change the Water Pump, Thermostat, upper and lower radiator hoses and the drive belt. Might as well change the antifreeze too. Johnnnny
Why do you recomend replacing the upper & lower radiator hose? Just because you taking it off anyway? Can these really get damage or worn? I've never replaced hoses before on any of my Toyota's. Just curious if the motors have rubbing issues with them perhaps?
Why do you recomend replacing the upper & lower radiator hose? Just because you taking it off anyway? Can these really get damage or worn? I've never replaced hoses before on any of my Toyota's. Just curious if the motors have rubbing issues with them perhaps?
Yeah, I would do it just because I am taking it off anyway. I am VERY anal when it comes to things like that. If I am taking it off and the item is not hundreds of dollars I just go and replace it because I would kick myself in the arss if I had a problem with a part I took off and didn't replace just to save $20.00. If you are willing to take a chance and worry about it at a later time then at the very least change the "HOSE CLAMPS". When you take those crappy factory hose clamps off they get very week and crack sometimes within hours after putting them back on. You should replace each clamp with one of the one's you make tight with a screw driver not the one you squeeze with a pair of pliers like the factory ones. Johnnnnny
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2004 Ford Lightning (Sonic Blue)
2003 Cobra with LOTS of work : ) (BLACK)
1996 Cobra (White)
1999 Tacoma 4 wheel drive (Purple in Color)
2002 Tundra Limited (Dark Green or Jade In Color)
2002 Chevy Corvette Z06 (Candy Apple Red)
2003 HighLander Limited (Silver In Color)
2005 Sequoia Limited (Phantom Grey)
Yeah, I would do it just because I am taking it off anyway. I am VERY anal when it comes to things like that. If I am taking it off and the item is not hundreds of dollars I just go and replace it because I would kick myself in the arss if I had a problem with a part I took off and didn't replace just to save $20.00. If you are willing to take a chance and worry about it at a later time then at the very least change the "HOSE CLAMPS". When you take those crappy factory hose clamps off they get very week and crack sometimes within hours after putting them back on. You should replace each clamp with one of the one's you make tight with a screw driver not the one you squeeze with a pair of pliers like the factory ones. Johnnnnny
I reused my original hose clamps without any problems whatsover.
So did my friend and that was a BIG mistake. About 3 or 4 months later the clamp snapped with a clean break opposite the side you squeeze and well you can figure out yourself what happened next . For the price of a few hose clamps your better off just changing them. The hose clamps they use in the factory work great and I bet they make things easy in the plant because they don't need to use a screw driver and they go on in no time at all. But once those kind of hose clamps are used one time I will NEVER trust them for a reuse after they have been on the hose for the past 100 thousand miles getting wet every time it rains and snows for all those years and THEN you take a pair of pliers and spring the metal back and forth to get it off and then back on again. If you want to trust the used factory hose clamps well, go for it. If money is an issue then I bet you can get some more of the factory kind of hose clamps, they are a lot cheaper then the kind you need a screw driver for but anything is better then the ones that have been on the truck for all those miles and years and then wrestled off and on again. Just My Opinion, Johnnnnnny
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2004 Ford Lightning (Sonic Blue)
2003 Cobra with LOTS of work : ) (BLACK)
1996 Cobra (White)
1999 Tacoma 4 wheel drive (Purple in Color)
2002 Tundra Limited (Dark Green or Jade In Color)
2002 Chevy Corvette Z06 (Candy Apple Red)
2003 HighLander Limited (Silver In Color)
2005 Sequoia Limited (Phantom Grey)
Timing Belt Done!
. For the price of a few hose clamps your better off just changing them. The hose clamps they use in the factory work great and I bet they make things easy in the plant because they don't need to use a screw driver and they go on in no time at all. But once those kind of hose clamps are used one time I will NEVER trust them for a reuse after they have been on the hose for the past 100 thousand miles getting wet every time it rains and snows for all those years and THEN you take a pair of pliers and spring the metal back and forth to get it off and then back on again. If you want to trust the used factory hose clamps well, go for it. If money is an issue then I bet you can get some more of the factory kind of hose clamps, they are a lot cheaper then the kind you need a screw driver for but anything is better then the ones that have been on the truck for all those miles and years and then wrestled off and on again. Just My Opinion, Johnnnnnny 
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