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Cooling problem with 1987 mazda b-2000.

Replaced cooling problem with 1987 mazda b-2000. replaced clutch fan,thermostat and flushed radiator temp. still high

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Try undoing the highest hose clip to vent any trapped air,could be this simple, if not get back.....

Posted on Jul 30, 2010

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2003 chevy trailblazer cooling temp running 230


Smart man using a scanner for the actual temp. Assuming you're not losing coolant....2 things I'd look at here, 1st is you may have air in the system, make sure to purge all the air. 2nd is your fan clutch, I've replaced a few fan clutches in my own Trailblazer. Have had them bad right out of the box brand new. Have had bad brand new fan clutches on 2 of my last Trailblazers. You should hear it engaging especially in stop and go traffic.

Aug 02, 2016 | 2003 Chevrolet TrailBlazer

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2000 mazda mpv overheating with new water pump and hoses?


Hello,

If you car is still overheating with new water pump and new hoses, there is still a few other things that can cause your over heating problem. Now, by you replacing water pump is good that you took care of one of the main things, however here is some other things to look at.

Number One, is your thermostat. Sometimes the thermostat gets worn out, and will not open and close properly, it is designed to open under a certain temp, but it could be stuck or warn out.

Number two, is check out your radiator, can put under pressure test, but best thing to do is a radiator flush, and see if flows proper. Sometimes the radiator core/coils get clogged.

Number Three. Check to see if your fans are coming on and proper speeds, normally as car gets to a certain temperature, they will kick into high speed.

Last thing, is make sure you have no head gasket leaks, as this could cause over heating, best way to check that, if its not obvious is, pressure test.


My opinion what I would first check, is the water thermostat and then radiator flush, if fan is working.

Thanks Mike.

Sep 08, 2011 | 2000 Mazda MPV

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I have 03 trailblazer at about 140k mile traveling to florida through ala. noticed that when engine was under a load the temp started to rise. (has never ever done this before). thought it might have been...


It's not possible to tell you exactly what is causing the vehicle to overheat; however, I can tell you possible causes. The engine cooling system is based on the fact that heat always travels to cold, so that if one thing is warmer than another, it will transfer its heat to the cooler thing. Engine heat is first transferred to the coolant in its water passages, the coolant carries the heat to the radiator where the heat is then transferred to the air flowing between the radiator cores and fins; the cooled coolant then returns to the engine to take away more heat. Thermostats, when they deteriorate, usually stick open from lack of spring pressure and cause the engine to run cool, so we can rule that out. You need to check for good coolant circulation by the water pump, and check the radiator and A/C condenser to make sure nothing is restricting air flow (such as bugs, leaves etc. or bent over fins), and the last, and possibly most likely source of the problem is clogged radiator cores that are not exposing the heated coolant to the air flow. The greatest tool for diagnosing cooling systems is a no touch thermometer available at many parts stores for around $30 to $50 for a decent one. If your problem is clogged radiator cores flushing seldom clears them, and few radiator shops rod out cores anymore, so the least expensive and best sure is a new radiator. One final thought, if your vehicle has a fan shroud make sure it's in place and in good shape.

Aug 01, 2011 | Chevrolet TrailBlazer EXT Cars & Trucks

1 Answer

Over heats new thermostat hest almosts pegs then comes down


If you replaced the thermostat I would look next at the electric cooling fan thermostat.. Its likely located in the radiator itself and is in charge of turning on the electric fans.

To check. start the car and listen for the fan next to the radiator to kick on. It should start running before the car gets over heated.

Also when the temp gets really high is the radiator hot? if not then you still have a coolant flow problem. If the radiator IS hot then you have a problem with the coolant not getting cooled. Either an electric fan/thermostat of if you have an engine driven fan maybe its clutch is bad.

Jun 18, 2011 | 2000 Mazda 626

1 Answer

Issue with coolant system: Issue began after I had radiator shop in Sonora Ca. flush out system and replace thermostats as normal maint. and they put the t stats in wrong holes. I only noticed after they...


AFTER REPLACING THERMOSTAT DONT STOP OVERHEATING.CHECK THE COOLANT FAN CLUTCH.WITH HOT ENGINE THE CLUTCH FAN SHOULD HAVE RESISTANCE WHEN TURNING IT WITH HAND.IF NOT FREEWHEEL.FAULTY CLUTCH FAN.HAVE TO REPLACE CLUTCH ON FAN.BAD CLUTCH ON COOLING FAN WILL CAUSE ENGINE OVERHEAT.WHEN CLUTCH FAN FREEWHEELS AT HIGH SPEEDS NOT PULLING ENOUGH AIR THROUGH RADIATOR CORES TO COOL DOWN ANTIFREEZE AND ENGINE.

Feb 16, 2011 | 2004 Chevrolet Silverado 3500

1 Answer

2000 Chevy Silverado normal operating temp is 210 , recently temp rises to 250. Its been this way for a few days, common operating temp is around 240-250 now, but does not overheat. Coolant levels are...


250 TOO HOT FOR ENGINE AND TRANSMISSION. SOUND LIKE COOLING FAN CLUTCH BAD ITS FREEWHEELING NOT LOCKING UP TO DIRECT DRIVE TOO COOL ENGINE OFF BECAUSE THE FAN CLUTCH THERMOSTAT NOT WORKING THE HOT SILICONE OIL CAUSE IT TO EXPAND TO PUT RESISTANCE ON CLUTCH TO PUT DRAG ON FAN CLUTCH CAUSING IT TO LOCK IN GIVE IT DIRECT DRIVE.I WOULD STILL REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP IF TEMPERATURE STILL 250 DEGREES YOUR RADIATOR AND COOLANT SYSTEM NEED FLUSHING.

Aug 17, 2010 | 2000 Chevrolet Silverado

3 Answers

Engine runs hot Ihave cleaned the radiator, replaced the cap, replaced the thermostat


First I have seen it happen before, is the spring side of the thermostat facing in to the engine, just had to ask, check your fan clutch, with engine off spin fan with your hand, should only turn about 3/4 of a turn, if it just spins freely bad fan clutch replace it.

Jun 09, 2010 | 1987 Ford Ranger

2 Answers

1st.temp. gauge went to 265 ,refilled jug .temp. gauge only stays down if heat/blower set to high plus anti-freeze light stays on tho anti-freeze in jug.


Re fill the system with the engine running and heater on high. Make sure that there are no leaks anywhere and that the electric fan is coming on as needed. If you see excessive white smoke from the tailpipe, coolant in the engine oil, oil in the coolant, you likely have a blown head gasket.
With the heater on, it acts as an auxiliary radiator ...that's why the temp becomes lower. Many times if the actual radiator is internally plugged, the heater provides just enough additional cooling to prevent the engine from overheating. If you continue to have problems and have checked for leaks etc., I would look there for problems.
One item: Your thermostat becomes unreliable after any overheat. You should replace it even if you find a problem elsewhere.
I usually begin testing by changing that because if it has failed, you won't find the problem and, I know I will be replacing it, for the reason I mentioned, so better to get it out of the way to begin with.
Good luck.

Feb 14, 2010 | 2000 Chevrolet Cavalier

2 Answers

2001 dodge durango temp. is high


use 50/50 mixture of coolant/water, use synthetic oil or no more than 5w 30. Change thermostat, make sure fans come on when idleing, otherwise change relay

Jul 09, 2009 | 1999 Dodge Durango

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