Question about 2003 Toyota 4Runner

1 Answer

Poor circulation recently changed water pump,themostat,rad and installed flexi lite fan, now it seems that there is zero circulation, the upper hose gets hot and is very hard, the lower hose is also hard however is cool to the touch, as well the lower section of the rad is cool what are my options

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Maybe the thermostat is in the wrong way around, The top is the arched part where you see the spring

Posted on Aug 12, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

3 Answers

Suzuki swift 2005 1,3 petrol overheated .coolant fluid was boiling but didn't seem to leak .started the car again drove a couple of miles and the same again.


check to see if the cooling fans at the rad are working. if so then change the thermostat and refill the system. if not then have the head gasket checked for cracking. make sure the coolant is circulating if its not it could be a plugged cooling system or even a water pump impeller problem.

Jul 05, 2015 | Suzuki Cars & Trucks

1 Answer

Rad hoses super hot 95 jetta


u probably have air in system.need bleed air out,otherwise water wont circulate and fans will not work.check you thermostat(more likely not a problem).if that dont resolve problem,you need change water pump..let me know

Jun 01, 2014 | 1995 Volkswagen Jetta

1 Answer

My 02 suburban 5.3 liter started overheating suddenly. I changed the themostat but it overheats in about a 1/4 mile. How do you tell if the water pump is bad? It's not leaking.


Start it up, when it hits operating temp that the thermostat open,Have gloves on that you don,t get burn,t, Seaze the hoses from the rad going to the engine one at a time to check if antifreeze is flowing trough them, If you don,t feel any flow on the top one ,the water pump is shot, Or you can take off the rad cap, Before you fire the truck up, Start it end watch if it is circulateing though the rad, But i have seen to many people get scolded that way, The hose trick is a safer thing to do. (PS) There could be a blockage ,That is causeing it to over heat All So,

Nov 10, 2012 | 1989 GMC Suburban

2 Answers

Changed thermostat and added coolant but 1997


could be waterpump?
i was going to say rad fan,but if so heater would be hot.
lack of coolant will make heater core to blow cold,if engine heats up with full coolant,usually means poor or no circulation.
water pump?
run engine with full coolant,at operating temp.with rad cap off and look in rad cap hole and see if there is movement of water inside rad.
[rad fan will not come on if water is not circulating through rad water pump?]

Dec 20, 2009 | 1997 Chrysler Cirrus

2 Answers

2004 dodge intrepid running hot. i change the themostat on it and it still running hot.what puzzles me is that the hose that goes into the radiator is hot while the bottom hose that comes hot of the...


not likely it is more than likely the waterpump, make sure the thermostat was not put in upside down. if fan is not kicking on it is a fuse or coolant switch for the fan

Aug 23, 2009 | Dodge Intrepid Cars & Trucks

2 Answers

1994 Honda Civic LX\overheating within 2 mile drive


Remove and raise upper hose at thermostat end and remove lower rad hose.
Fill rad with a hose and watch for flow from bottom rad hose and/ or bottom rad hose connecton.......water should fall though rad easily.
Honda rads are cheap.....any restriction....replace rad.

Remove thermostat....fill thermostat housing with hose and watch for water flow at bottom rad hose.
Flush good.

Remove heater hoses.......flush back and forth until a good flow is present "With heater control set to hot" if no or poor flow....replace heater core.

Stop leak can plug everything.

Also.......not likely causing over heating....but ....at your mileage,if you do not know if the timing belt has been changed.....CHANGE IT NOW!
Water pump is optional at this mileage.

Aug 23, 2009 | 1998 Honda Civic

1 Answer

1993 Cutlas Ciera 6 cylinder where is the themostat housing located on the engine to replace thermostat car running hot with the fan workinking


where the upper rad hose meets the engine, take the bolts out of the neck that the upper rad hose connects to and underneath that is the thermostat..take note of which way the stat is installed. do not replace it backwards..be ready for a gush of rad fluid

Aug 20, 2009 | 1989 Oldsmobile Cutlass Ciera

2 Answers

Overheating


I think you need to do a cheap and extremely accurate test.Its called a tk head test and it determines wether you have head or head gasket problem.If you could eliminate that part as being the cause then that really only leaves a couple of things left to check.A blocked radiator or an air lock.Maybe a faulty radiator/expansion tank cap not able to maintain correct pressure

Oct 19, 2008 | BMW 325 Cars & Trucks

2 Answers

2002 V.W. Jetta 2.0 liter overheat


turn your heater on to max heat and high fan. then see if you can feel the hoses on the firewall for heat they should be hot. make sure that the fan unit on the radiatoris working if the upper radiator hose is hot the fans should be running if they are not that means that either the relay is bad the thermo sensor is bad or the fan unit is shot... please rate the solution..........thanks

Sep 24, 2008 | 2002 Volkswagen Jetta TDI

1 Answer

98 runner cooling issues


You probably have airlock in the cooling system.

Not sure about the 4 runner's cooling system, but if there is airlock I usually take the coolant back out, take the thermostat back out, fill the engine block from this hole with 50/50 coolant, reinstall the thermostat, upper hose, fill the radiator and tank, then run the vehicle with the heater on max (rad cap off) and then fill the rad as the rest of the air comes out.

Aug 15, 2008 | 1998 Toyota 4Runner

Not finding what you are looking for?
2003 Toyota 4Runner Logo

111 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...