Question about 1993 Toyota 4Runner

2 Answers

Should I back-flush the system?

Due to my recent radiator issues, I realize I might have some blockage in my radiator.So Im doing a super flush before I refill with fresh coolant.
I have two questions.
(1)Should I use any Super Sealer or Stop Leak, just to be safe?
(2)Should I back flush the system w/ Prestone Flush'N Fill Kit? If so, does this include the A/C system? My free-on hoses that run near the car battery have been disconnected for long time due to battery acid corrosion.

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 65 Answers

Well the best way to flush a radiator is to buy the fill and flush kit from prestone and there is one more way also and that is to get a water hose and spray out all the bugs that are stuck in the front of the radiator but be careful to not bend any of the fins on the radiator that causes blockage as well if u do have alot of bent fins they make a radiator brush to comb out the bent fins and i would not use any of the sealer or stop leak unless u have a leak but that stuff is very bad on ur engine and coolant system and for the a/c system they make a flush kit that is sold separtley because that is freon that flows thru the lines not coolant

Posted on May 18, 2009

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 410 Answers

I would not use any Super Sealer of Stop Leak, this is just a personal preference due to all the trouble I've had when dealing with the consequences of that stuff later on down the line.  I would definitely back flush the system with the kit to get any nasty stuff out of there so you know you are working with a clean system.  I'm not sure about the A/C system though.

Posted on May 18, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Recently had a new water pump fitted to my jeep Cherokee but it's still overheating and the heater in the car doesn't work. Any idea what might be causing this


if no leaks in hoses, then flush out the radiator etc, there maybe a plug up in system. also change thermostat. God-Bless! and hope this helps you.

Apr 24, 2016 | Jeep Cars & Trucks

1 Answer

I have a 1994 Jeep wrangler 6 cylinder. I replaced the cooland and therostat and it opens like it should at about 100 but the air is still cold. Is there something I overlooked?


Hello! Thermostat should be a 190 degree...you may have an air blockage...Remove radiator cap start engine and leave cap of until all air bubbles are out (even after thermostat opens)...Cap and test for heat...if there isn't any heat...When that thermostat opens and hot water flows through the upper hose of the radiator that hose will be hot and hard..If you feel the heater hose only one will be hot which means that nice hot water is not passing through the heater core...That could be due to blockage or the control in the car isn't opening the valve on the core...check to see if the heat control is opening the valve...If it is, I would suggest that you purchase a back flushing kit ($10) A plastic tee fits into the inlet heater hose and a garden hose is then connected to the tee...Drain the radiator, remove the thermostat, and turn on the water...do this with heat control on high...The system will back flush out of the top of the radiator and hopefully clean the blockage...Reassemble ...Cap off the tee (cap is in kit)...Install thermostat (190) Is a better choice...Refill radiator...Start engine and leave the radiator cap off until all the air bubbles out............At that point you should have heat...Guru...Saailer

Jan 01, 2012 | Cars & Trucks

2 Answers

Heat is luke warm and coolant temp gauge not getting to operating tempature. installed a new thermostat with the valve up on the thermostat. removed the heater control valve to make sure it was functioning...


this is probibly a blockage in the radiator or water pump issue start by flushing the radiator,then check that water is flowing thru the radiator and water system.

Dec 21, 2010 | 2000 Honda Accord

1 Answer

83 ford ranger no heat ,new heater core,thermostat,blower motor,runs at normal temps,noticed one heater hose very hot yet the other one which is ran into a metal line going to the engine or ekg valve is...


it sounds like you have a air blockage, or the cooling system needs flushed. to flush system go to ( autorepair.about.com/od/regularmaintenance/ss/coolant_f...) click on 3rd one down. remember to bleed air out of system, this works the best. turn heater and blower on high, start adding coolant. start car let it idle till radiator thermostat opens. when top radiator hose gets hot you should have heat. some vehicles have a bleeder to let air from system. when filling putting coolant in system. if it does, then open bleeder while engine running and putting in coolant untill there are no air bubbles coming out. have a good day !! when doing flush if need be. you can go to any auto parts store and buy radiator flush. follow directions on the back ( prestone is best )

Dec 11, 2010 | 1983 Ford Ranger

1 Answer

HOW DO I FLUSH RADIATOR


Your car's radiator and cooling system needs to be clean to be cool. As time goes on, your car's radiator builds solid deposits that can clog the cooling system. A quick, inexpensive radiator flush can keep the system in shape. It's important to change your antifreeze seasonally. Before you start your radiator flush, make sure you have everything you need. There's nothing worse than draining your radiator only to realize that you need to drive to the auto store for something!
What you'll need to perform a radiator flush:

  • Phillips head screwdriver or wrench (whichever your radiator drain requires)
  • Cloth rag
  • Radiator Flush solution
  • Coolant
  • Funnel
  • Used coolant receptacle
*Be sure to let your engine cool completely before you loosen or remove the radiator cap. Hot coolant can be painful!

Jun 02, 2010 | 2000 Oldsmobile Bravada

1 Answer

No heat is there a fuse 2003 f250 is there a fuse for heater


i don't know realy if there is a fuse (though i doubt it) but issues with heatting may be this will help.

If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.
Remove it and install a new unit (most radiator shops will not repair a leaking heater core.
If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

Nov 27, 2009 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

Heater not working (no heat)


If u have issues with heatting may be this will help.

1- If the carpet under the heater core is damp, or if antifreeze vapor or steam is coming through the vents, the heater core is leaking.Remove it and install a new unit (most radiator shops will not repair a leaking heater core.

1 - If the air coming out of the heater vents isn't hot, the problem could stem from any of the following causes:
  • The thermostat is stuck open, previnting the engine coolant from warming enough to carry heat to the heater core. Replace the thermostat.
  • There is a blockage in the system, Preventing the flow of coolant through heater core. Feel both heater hoses the firewall. They should be hot.if one of them is cold, there is an obstruction in one of the hoses or in the heater core,or the heater control valve is shut. Detach the hoses and back flush the heater core with a water hose. If the heater core is clear but circulation is impeded, remove the two hoses and flush them out with a water hose.
  • If flushing fails to remove the blockage from the heater core, the coremust replaced.

Nov 19, 2009 | 2003 Ford F250 Super Duty Crew Cab

3 Answers

1997 Camaro is overheating. I have replaced both the Water Pump and Thermostat and still overheating


what do you mean by overheating? puking coolant out? or just high on the temp gauge. the rad fan should come on if the a/c is on. if the a.c is off, the fan doesnt come on till 220f or so. when the fan is on, there should be "roasting hot" air blowing through the radiator, if not the radiator is not flowing coolant.

Sep 18, 2009 | 1997 Chevrolet Camaro

5 Answers

Car still over heats.I've changed or checked every possible thing


you'd better have another pressure check done on your engine; because I hate to say these 2 words: head gasket.

Sep 07, 2009 | Honda Accord Cars & Trucks

2 Answers

Car over heats


Have you tried flushing your cooling system?  It sounds like you might have some kind of blockage in there.  I had the same problem with my 89 civic and used a prestone flushing kit.  It's pretty cheap from AutoZone.  Give it a try and let me know if I can help you with anything else.  Thanks for an honest rating and for using FixYa.

May 19, 2009 | 1991 Honda Accord

Not finding what you are looking for?
1993 Toyota 4Runner Logo

228 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8499 Answers

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

Answer questions

Manuals & User Guides

Loading...