Thursday, September 15, 2011

How do I flush radiator and change thermostat?

94 ford rangerHow do I flush radiator and change thermostat?Do not flush the radiator with any chemical! use water only, open the drain at the bottom of radiator and flush out with clean water, remove the thermostat housing on the motor were the hoes connects under you will find the stat, replace and use a gasket, the reason to use no chemical especially on older vehicles that it will loosen all the rust and clog up then your looking at a new radiator. good luckHow do I flush radiator and change thermostat?There is a plug on the bottom inside of the radiator.Pull that and drain the system.Add fluid as per instruction on the Flush.The thermostat is connected to the large hose going to the top of the motor.It is in line. Remove the hose from the motor and you should see it.Then refill the coolant.How do I flush radiator and change thermostat?radiator: undo hose clamp on bottom hose, pull off, let drain. Refill later after thermostat.

thermostat: find housing, usually 2 or 3 bolts, remove noting which end of thermostat points out, replace with new gasket, refill cooling system. then prepare to do head gasket soon cuz fords love to eat them.How do I flush radiator and change thermostat?http://buildingnetworth.blogspot.com/How do I flush radiator and change thermostat?I Would Suggest Take The Radiator Out And At The Very Least Take It To The Radiator Shop,However If It Was Mine And I Knew The Head Gasket Was Definily Good I'd Just Replace It With A New One On A 94..If It Has Been Ran Hot,U'll Need To Have A Cylinder Head Gasket Test Performed First,BUT If Ur On Here Asking How I Strongly Suggest U Get A Good Trained Mechanic...How do I flush radiator and change thermostat?Well flushing is easy there is a plug at the bottom of the radiator remove it and drain the old fluid.

You can buy flush chemicals at stores but you dont have to use them although it is recommended.

fill it back up with water and chemical if used and run to normal operating temp 15 min should do at idle. then drainand repeat with just water. Repeat step several times if you just use water

to change the thermo it is kinda easy on those.... follow the top hose on the radiator to the block... inside that housing is your thermo take that off and scrape the old gasket off of both parts real good then replacce:) and fill up with 50/50 green coolant (50/water 50/coolant)How do I flush radiator and change thermostat?Go to your local ford dealer and have them do it so that it is done properly and they can dispose of the old coolant in an environmentally friendly way.How do I flush radiator and change thermostat?With engine off and cooled down, open pitcock on bottom of radiator, usually located on the right side facing the engine compartment, remove radiator cap and drain radiator into a drain pan. Do not let the water puddle up, this is very hazardous to small animals because of the antifreeze content. Looking at the drain pan, if the water/antifreeze mix still looks clean, run a garden hose over to your car and allow the water to run through your radiator until it looks clean coming out of the drain pitcock. If it doesn't clear up, you might need to chemically flush it. There are many radiator flushes available at any parts house, WalMart, etc.



To change thermostat,, follw top radiator hose back to the engine. Where the hose attaches at the bulb looking thing on the engine is the thermostat housing. Remove hose clamp, then hose end from thermostat housing. If you have never changed hoses before, it would be wise to take the opportunity to change both the top and bottom radiator hoses while doing this. Especially since you have just flushed your radiator, the radiator is empty and it just makes sense to do it. Mainly, because if the hoses have not ever been changed, the likelyhood of rupturing a hose will be greater when you reload your radiator with new antifreeze. It is a shame to see a gallon of fresh antifreeze be wasted by a busted hose. Purchase your thermostat at a quality parts house, always get a gasket, and make sure to use a good quality gasket sealer. I prefer Permatex-nonhardening

sealer. Note the correct direction the thermostat is to be placed in the thermostat well. The directions will be on the package. There will be two bolts on the thermostat housing, probably will take a 1/2%26quot; swivel/socket

to remove the two bolts. remove top from housing, remove old thermostat, clean off old gasket with a putty knife, lightly spread a thin coat of gasket sealer around the well and on bnoth sides of the gasket. Place thermostat in well, place gasket on the surface of the well, put thermostat cover back on, carefully aligning the holes. Put bolts back into holes, running them down until finger tight, then easily torque them to about the same tightness, being carefull not to over tighten. Attach hose and tighten clamp. Make sure all hose clamps are tight, closr pitcock valve, put in proper amount of antifreeze(usually 1 gallon per radiator works okay, but severe cold weather areas will require more). then fill with water. With Cap off of radiator, start engine and watch to see how low the water level drops when the engine gets to operating temperature, fill radiator completely, then put on the cap tightly. Then your done.