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Do I need to do a radiator flush on my car? My hoses keep getting tight after I Drive it a few miles, and I already replaced the thermostat so I know it can't be that

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  • Cars & Trucks Master
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Dont waste your time ,its a pressure build up which can only be one thing and thats a head gasket ,but check this out first and thats when the engine warm turn it off as the electric cooling fan can start at any time and feel the centre of the rad in case its cold ,also that the water is circulating as a plastic impeller on a water pump can come adrift from the metal drive shaft.If both these things appear ok then its a head gasket or a corroded water port on the head facing maybe even the block facing as well .Who can tell without stripping it down to look first

Posted on May 02, 2013

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6ya6ya
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Posted on Jan 02, 2017

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davidkay61
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SOURCE: running hot

Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Posted on Dec 01, 2008

  • 1779 Answers

SOURCE: Maintenance Toyota Solara 2000

I have kept my cars running for a long time (250k+) by changing fluids as u are doing, and fixing things right away, not letting them develop into bigger problems, so u are destined to have your car for a long time! Many of the maintenance items u list are typically NEVER done by anyone, but they should be. Here's what I recommend from many years of maintaining my cars:
ps flush-50k or 5 yrs
brake fluid flush- every time u have brakes replaced.
Rad.drain, flush, fill -new coolant is said to be good for life of car, I would flush and refill 50/50 coolant water mix every 4 years.
Fuel Injection- I'll get flak over this, but I never do anything to the system, just change your fuel filter every 2 years, or 20k
Trans Flush-don't have it done if they '**** out' the fluid from the dipstick tube. I consider that method a waste. Have the pan removed to drain it, and replace the trans filter if equipped w/ one (u can't change the filter if u **** the fluid out of the dipstick.) Also, some vehicles have a magnet on the bottom of the trans. pan, which collects fine shavings from normal wear and tear (and pieces of metal from a trans. about to go bad). U need to drop the pan to clean this crud off the magnet.
oil and filter (good quality filter-cheap junky ones are much lighter than a quality one) every 3k or twice a year whichever comes 1st
I'll add: air filter- every 20k or once a year
check tire air pressure once a month, rotate tires for even wear (every 5k miles) Can I buy your well maintained car when u r ready to sell it?

Posted on Jan 03, 2009

  • 192 Answers

SOURCE: 95 TOYOTA COROLLA WON'T STOP OVER HEATING

Check the thermostat. Maybe it's stuck closed or maybe it was installed backwards.

Posted on May 23, 2009

  • 1 Answer

SOURCE: overheats only when stepping on the gas

Could be a few things. That I know of. Is the rad still good and does it have all the fins on it. If it doesn't it may not be "removing" the heat efficiently enough. Also where i live there are Summer and Winter Thermostats. Could you have gotten a winter one and tried to drive it in summer? I dont know what car you have either. The rad isnt being blocked by some aftermarket body kit? which would deflect air while driving around? Also make sure the catalytic converter isnt plugged. A friend of mine noticed his cat was red hot while it was plugged. That could transfer heat into the engine.. although i think this would be rare. Also make your if it is automatic, that it has the proper amount of tranny fluid. I've had transmissions burn up and caused the engine to heat up as well. (you could check to make sure the auto tranny fluid is a nice pink colour) If it is dark red or brown it definatly needs to be changed. And you could have an air blockage in the engine...blocking the coolant.. or have a faulty guage or sensor.

Posted on Jun 16, 2009

  • 491 Answers

SOURCE: 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.

Posted on Aug 24, 2009

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2 Answers

Getting no heat in 2001 ford taurus. Changed thermostat 3 times over a period of time. Flushed radiator plus had the heater core back flushed twice. After the 1st back flush, we had heat for a mile. temp...


If both heater hoses are getting hot, the problem could be a stuck blend door under the dash.
If only one hose is getting hot, there is a blockage in the coolant flow somewhere.

Jan 15, 2013 | 2001 Ford Taurus

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How to back flush heater core 2007 grand prix


drain coolant system locate heater cores hoses going through firewall you need to buy the radiator flush kit at any auto parts stores. remove heater cores hoses from one end or buy extra long heater hoses same size as heater core hoses in vechicle at auto parts store use the flush kit when you flush through one of the heater core hoses let the other hose drain in a drain pan when you use home garden hose use low water pressure dont use garden hose to the max or you will rupture heater core. your best bet let radiator shop flush whole coolant system. because heater cores hoses are in a tight spot.make sure engine off if you just going to flush out heater core only .after flushing heater core good time to replace heater core hoses.if job too hard or complicated let radiator shop flush out radiator the engine block and heater core because if radiator stopped up or engine block stopped up the gunk and rust will reenter plug up heater core.if you tight on money you can flush out your own radiator.drain out radiator using large drain pan. remove top radiator hose and remove bottom radiator hoses connect to water pump.use garden hose with flush kit part with water pressure not too high put garden hose to top radiator hose run water until clear water run out bottom radiator hose in drain pan,the flush out engine block remove thermostat.if you had another spare thermostat housing with RTV SILICONE SEALANT THAT HAS SET UP INSTALL THERMOSTAT HOUSING BACK TO ENGINE WITHOUT THERMOSTAT FLUSH OUT THE ENGINE BLOCK, WHEN DONE INSTALL NEW THERMOSTAT THEN INSTALL ORIGINAL THERMOSTAT HOUSING WITH NEW ORING WHICH YOU BUY AT DEALERSHIP.IF ALL SOUND COMPLICATED LET RADIATOR SHOP FLUSH OUT COOLANT SYSTEM.

Nov 27, 2012 | 2003 Pontiac Grand Prix

1 Answer

Ok, g35 coupe 06,52k miles Had over heating problem in april 2010,replaced thermostat, all's well. Now Jan 2011 overheating again, noticed upper & lower radiator hoses collapse, changed thermostat...


Heres a couple of things you can check. Start your car and remove the radiator cap,(before it gets hot mind you) when it reaches norm operating temp, look inside radiator to see if water is circulating. If its not moving, its a bad water pump. Also, youre hoses should never collapse, if they collapse when they get hot maybe you need new hoses? Finally, if those dont work, flush out your radiator. Open the bottom cockpit and use a garden hose and let it flush out the system while the car is running, about 10 mins should do the trick. If the radiator looks clean inside then it doesnt need flushed.

Jan 04, 2011 | 2006 Infiniti G35

1 Answer

My 1999 subaru legacy runs hot. I replaced the thermostat twice with no results. I noticed that the lower radiator hose is cool to touch. I removed the thermostat completly and the car runs fine but a...


you probably have a blockage in the radiator cooling tubes, try flushing it with a commercial radiator flush, or replace the radiator-at 133,000 miles, it really doesn't owe you a thing.

Dec 28, 2010 | 1997 Subaru Legacy

2 Answers

My trailblazer keeps overheating and I'm not sure why. I have already replaced the radiator, water pump, thermostat, and clutch fan. Is there anything else I can do?


There may be an obstruction in one of the hoses, there may be an air pocket in the system somewhere.
Are you sure there is actually an overheating going on? Maybe it's a bad temperature sensor or temperature gauge stepper motor.

Sep 23, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

My volkswagon jetta 2.0 from the year 2002 is overheating and it blew up a few pipes i already replaced, but it still over heats i wish to know how can i fix the problem, and what might be the problem?...


Are your fans working? If they're not it will cause overheating while stationary or in slow traffic. Overheating while driving points to the radiator.
Get some engine flush into the cooling system and run the car for a couple miles. Then let it cool down and remove all the water(Take both large hoses off the radiator). Then stick a hosepipe into the radiator and let the water run until clear.
If this doesnt work remove the radiator and have it reconditioned/replaced. Removing the thermostat will not cause the engine to overheat. It just causes the engine to take longer to reach operating temp.

Jul 07, 2010 | 2002 Volkswagen Jetta TDI

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

2 Answers

My '05 Kia Sorento is overheating during this this hot days!!!!


Check fluid levels, make sure radiator cap is on tight, checks hoses to assure all good. And keep in mind, although new thermostat, it could still be faulty. (not likely, but a thought).

Jul 24, 2009 | 2005 Kia Sorento

1 Answer

Overheating 2001 pontiac aztek


remove coolant.remove thermostat remove bottom radiator hose to water pump.put a empty container under the radiator.take a water hose put it where thermostat goes flush out the rust in block.watch the water as it come out the water pump .if stream water is small keep flushing until you get a study sream of clear water. also flush out radiator. lower water pressure dont flush radiator it with high water pressure you could burst it. make clean the over flow jug .make sure it not stopped up.put in a new thermostat and radiator pressure cap. fill radiator with half antifreeze and half water.bleed the coolant system.

Apr 05, 2009 | 2001 Pontiac Aztek

2 Answers

The car keeps overheatnig. It was good for a minute after putting some coolant in it, but when you drive it or just turn it on sitting in the driveway after about 2 minutes the therometer is all the way up...


if its the thermostat your lucky easy fix just replace it but wait until the engine is cold the bolts are a nightmare to get to you have to take off air hose and disconnect a couple coolant hoses move them aside to get to the thermostat housing on the side of the engine tricky getting to that bolt.

if its the head gasket flush the radiator with flushing agent
first drain the coolant from bottom radiator hose replace with flushing agent run car idle about 10 minutes then
remove the thermostat replace the thermostat housing then fill the coolant back up leave room for blue devil head gasket sealant about $65.00 follow the directions to the tea run for 50 minutes if it doesn't work that baby needs to get in the shop
hope this helps don't forget to rate if I was helpful.
good luck

Jul 29, 2008 | 2002 Oldsmobile Alero

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