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Why does my 2001 toyota sienna overheat?

My 2001 Toyota sienna is overheating. I replaced radiator cap, checked fluids, no leakage. Any suggestions?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 91 toyota camry overheating problem

So far you did the right things in the right order. If you have a pressure cap (looks like a radiator cap to the rear side of the engine. Dealer $15) change the pressure cap also and then flush the radiator. A sure sign of blockage is when you open the radiator look around inside the top if you see brown or green kind of gunky stuff. Flush the radiator anyway.
If after the radiator is flushed and you still overheat, the next posibility is the head gasket. But don,t worry yet, follow these steps and observations. (this goes for 93 camry V6 also, I have one)

  1. change radiator cap and pressure cap where applicable
  2. Change the thermostat.
  3. Some cars may have a thermo switch which ramps up the fan(double fan designs). Change that if applicable.
  4. flush the radiator and engine block
  5. change waterpump AND headgasket.
The temperature guage can tell you what you need to know.
  1. If the guage starts to spike up after stopping, pausing in traffic or while in gear not moving but it is fine while driving along the highway, then you are having a blockage in the cooling system. FLUSH SYSTEM.
  2. if there is a bubbling sound in the engine when you turn it off, FLUSH SYSTEM
  3. If the car overheats at anytime, anywhere and it drinks coolant like a fish, then you my friend have a headgasket problem. Change waterpump and head together

Posted on May 22, 2009

  • 19 Answers

SOURCE: toyota seinna po440, po441, po446

you have to understand that there is a leak in the system other than the gas cap for the evaporative system. The system needs to be professionally closed, and smoke introduced into to find the leak, and a through component check, eg.. purge valve vapor canister vent solenoid all functioning correctly

Posted on Sep 01, 2009

  • 1986 Answers

SOURCE: Replacing RH Side view mirror on a 2006 Toyota Sienna

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to manipulate the panel and disconnect the door handle linkage from the door handle and disconnect the wiring for your controls. Then you can access the bolts that secure the mirror onto the door

Posted on Sep 29, 2009

techbuster
  • 5081 Answers

SOURCE: 2002 toyota sienna change transmission fluid and

The drain plug is on the bottom of the transmission. Its torqued to 49 nM.
1. Remove tranny oil pan drain plug
2. Drain old fluid (roughly 2-4 quarts)
3. Reinstall drain plug.
4. Measure amount drained in a 99 cent orange juice pitcher from Walmart
5. Pour back the same amount drained using Toyota Type T-IV fluid (available in 1 quart bottles from a Toyota dealer.
6. Start engine and shift slowly through all the gears ending in Park.
7. Check fluid level on the dipstick. Add fluid, if necessary, to bring the level to a point inbetween the COLD and HOT marks on the dipstick.
8. Go for a 20 minute drive and recheck fluid level. Add fluid, if necessary, to bring the level up to,
but not beyond, the upper half of the HOT range on the dipstick.

As in 1973, NO FLUSHING is needed and NO FILTER REPLACEMENT is needed, NO PAN REMOVAL is needed. As, as in 1973 todays Toyotas have a metal mesh filter screen that doesn't ever get clogged except in rare cases of transmission operational abuse, including failure to ever change the fluid for 150,000 miles or more.

Posted on Nov 21, 2009

  • 1 Answer

SOURCE: 2001 toyota sienna power mirror/ clock not working...

There is an interior fuse panel located on the left side of the steering column, behind the "change compartment". You just pull it out and you will see a fuse diagram on the back. The fuse you want to replace is the fuse for the cigarette lighter, it is a 15 amp fuse and is located on the bottom right.

As far as I can tell, the owner manual makes no mention of this interior fuse panel and furthermore the actual fuse for the cigarrette lighter doesn't mention that it is connected to the clock and the power mirror.

Posted on Jan 30, 2011

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1 Answer

Overheating on 2001 toyota sienna


that can be a lot of things ,clogged radiator ,bad thermostate leaks ,no fluid ,water pump NG. belt slipping .

Feb 11, 2017 | Toyota Sienna Cars & Trucks

1 Answer

2001 toyota sienna water leak inside rear door seal


For water leaking inside the rear door panel, I'll suggest you check and replace the black rubber/foamy seal that is part of the high-mounted-rear light assembly.
It gets weak over time and soaks water, thereby allowing water seep into the booth lining and also into the underlay of the carpet.
If you have a cracked rear-light (the one attached to the boot hatch), you may also get a leak.
Change this rubber seal/ gasket. I used an old rubber carpet to make a gasket to fit the light assembly, and it stopped the leakage.
Hope this helps.

Feb 07, 2012 | 2001 Toyota Sienna

1 Answer

The engine overheats in just less than 20 minutes after ignition.


Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!

May 16, 2011 | 1993 Toyota Corolla

1 Answer

Car overheats and AC cuts out intermitentantly


Hello and welcome to FixYa!


If you have overheating problem, it can lead to multiple issues. You may be running on low coolant that's why the vehicle overheats. If that's the case, please add coolant and make sure that it sits on the right level, too much coolant can cause overheating too for coolant will overflow.


The vehicle may have a faulty or worn out radiator blower motor that's why it overheats. If that's the case then you will need a blower motor replacement to resolve the issue.


If the radiator is clogged with dirt and rusts this issue occurs too. The coolant doesn't flow normally on the cooling system if it's clogged. If that's the case, I strongly suggest that you have the radiator flushed to drain out dirt and rusts. If you think that the radiator served you enough then it's better to have it replaced.


Please do check the radiator hoses, If you have worn out hoses it can cause coolant leakage which can result to overheating. A tiny hole is good enough for the vehicle to overheat.


A faulty thermostat sensor can cause the issue too. If you have worn out thermostat, the fan may not trigger that's why the fan won't work when under stressed conditions. A blown radiator blower fuse can cause this issue too so I suggest that you check the radiator blower fuse and replace it when necessary.


Hope you find this information helpful enough and thank you for using FixYa! Have a good one!

Apr 23, 2011 | 2006 Toyota Sienna

1 Answer

V6 car drives for about 100 km then slowly overheats


Hello and welcome to FixYa!


If you have overheating problem, it can lead to multiple issues. You may be running on low coolant that's why the vehicle overheats. If that's the case, please add coolant and make sure that it sits on the right level, too much coolant can cause overheating too for coolant will overflow.


The vehicle may have a faulty or worn out radiator blower motor that's why it overheats. If that's the case then you will need a blower motor replacement to resolve the issue.


If the radiator is clogged with dirt and rusts this issue occurs too. The coolant doesn't flow normally on the cooling system if it's clogged. If that's the case, I strongly suggest that you have the radiator flushed to drain out dirt and rusts. If you think that the radiator served you enough then it's better to have it replaced.


Please do check the radiator hoses, If you have worn out hoses it can cause coolant leakage which can result to overheating. A tiny hole is good enough for the vehicle to overheat.


A faulty thermostat sensor can cause the issue too. If you have worn out thermostat, the fan may not trigger that's why the fan won't work when under stressed conditions. A blown radiator blower fuse can cause this issue too so I suggest that you check the radiator blower fuse and replace it when necessary. What causes the radiator blower fan fuse to blow? It's because of a failing radiator blower motor, If that's the case have the radiator blower fan motor replaced.


If the fluid in radiator doesn't circulate then it means that you have a blown head gasket or a faulty water pump. I suggest that you go for the water pump replacement first specially if you think that it's near the end of it's service life. Usually, water pops out the radiator when engine is reved (a sign of faulty water pump and possible blown head gasket).


Hope you find this information helpful enough and thank you for using FixYa! Have a good one!

Jan 08, 2011 | 1994 Toyota Camry

1 Answer

2004 Toyota Sienna and the AC is blowing warm air


Well, I would check to see if the compressor under the hood is engaging and the fan turns on to the radiator when switching the a/c on.

The most common problem for a car that is 6 years old is for r134a refrigerant to leak out through o-rings.

I would get an r134a recharge kit from your local auto parts store which consists of a tube and a can of freon with oil, leak detector, and sealant to help prevent leakage.

Hope you can get 'cool' air conditioning again.

Jul 08, 2010 | 2004 Toyota Sienna

3 Answers

Overheating


If the cooling fans, water pump, radiator, and thermostat are all working properly and the engine is still overheating, I would take a look at something a little more simple, like a defective radiator cap. Try this inexpensive fix and see if it works. Sure hope this helps and good luck.

Jul 19, 2009 | 1995 Toyota Land Cruiser

2 Answers

Overheating


Having the radiator rodded is a good move. Retest. If it has an electric radiator fan check temp sensors. If the fan has a clutch it may need to be replaced if its slipping with the engine hot. Check bellts. Its likely a fan air flow issue if the engine overheats when the care is not moving or is moving slowly. If the engine overheats only with AC on that narrows it down. Write back if that's the case. Lots of things can cause this. Antifreeze and a good radiator cap discourages boiling. Pressure in the radiator raises the boiling point but it can't build up pressure if the cap is bad. Antifreeze also raises the boiling point. If actual boiling happens in the engine then steam builds up in critical places and drives the collant out of the block making the engine even hotter than it already is. Replace the cap. Check the antifreeze.

Jan 03, 2009 | 1991 Toyota Pickup

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