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In cooling system the engine turns overheat in five minutes it is possible that the thermostat and thermostat valve and thermoswitch is the problem?


Thermostat most likely the culprit. Till fixed open the windows and run your heater full blast.

Could also be a bad water pump, clogged radiator internally, outer debris clogging radiator fins.

Oct 27, 2015 | Cars & Trucks

2 Answers

My mazda protege is having a heating problem. The temp guage will go up to the normal place as the engine warms up but then when I drive down the road the temp guage goes down to below cold and then my car...


I believe the mazda protege has a separate thermoswitch to activate the radiator's fan. Perhaps the fan keeps blowing until the temperature is too low. Try replacing the fan thermoswitch. Just take care to put in tis place a thermoswitch of the same temperature range.

Nov 11, 2013 | Cars & Trucks

1 Answer

What 100,000 maintenance needs to be done on a 2001 bmw z3 with 122,000


General advice:
Oil/filter replace.
Air filter replace.
Fuel filter replace.
Brakes/pads/oil/discs/dust proof sealers,
Timing /tension.
Valves adjust.
Wheels alignement/balance .
Tires condition/pressure.
Engine compartiment belts.
Battery/alternator condition/charge rate.
Lights alignement/hight ceck.
Thermostat open/thermoswitch triggers fan.
Coolant ceck/change.
AC pressure.
Doors/trunk/hood/roof look/hinges oiling.
Remote battery ceck.
Pretty much everything if u care 4ur car.
Cheers.

Oct 27, 2013 | 2001 BMW 325

1 Answer

Chevrolet caviler over heating no leaks


Thermostat locked (common).Fan vent not turning on/fan thermoswitch malfunction (common).Cloged radiator (rare).Loosed waterpump belt (rare).Broken water pump blades (very rare).Wrong cooler liquid level (!?).Rare and last:head gasket related problems needs further problem tracking.

Oct 26, 2013 | Chevrolet Cavalier Cars & Trucks

1 Answer

My proton iswara temperature reached up to half of the level


check your radiator fan and the thermoswitch, maybe its not working or if this are working have your cooling system thermostat checked by a mechanic...if the temperature still goes up, have an engine tune up...

Sep 27, 2010 | 1995 Mitsubishi Galant

1 Answer

Radiator fan will not run resulting in overheating


Probably thermoswitch located either on bottom tank of radiator or thermostat housing Check by jumping switch plug with a wire (with ignition ON )and check if fan starts otherwise check fuse

Oct 22, 2009 | 1991 Buick Skylark

1 Answer

I have a 97 cavelier and the cooling fan will not work


Find the thermoswitch On thermostat housing on end of top radiator hose Turn key to on and earth switch wire If fan goes new switch if not it will be a fuse

Jul 09, 2009 | 1997 Chevrolet Cavalier

1 Answer

1994 Saab 900 S convertible running hot


You don't say whether your electric fans both work...

First, check fuses #25 and #6 (both 30 amp)

There is a fan thermoswitch is on the left side of the rad. Turn the ignition on, and after pulling back the boot, short across the two terminals with a screwdriver.

If the fan runs, fan and wiring are both good, but thermoswitch might be faulty.

If fan only runs when thermoswitch is shorted like this, switch needs to be replaced (I strongly recommend that you get the low temp switch to prevent overheating - your temp gauge will not go over the middle position even on the hottest days; also get a low temp thermostat,and ALWAYS get a Saab stat, not an after market one! The SAAB stats are three position, and most after market ones aren't)

if the fan doesn't run when switch is shorted, check for voltage between green wire and ground at the switch.

Voltage indicates faulty fan, if no voltage then check the fan relay J in the main fuse box for the A/C rad fan, and also check relay G - it's for the rad fan.

Hope this helps!

Saabreur

Jun 22, 2009 | 1994 Saab 9 3

1 Answer

1994 9000C Runs hot


Could be the fan thermoswitch. The thermoswitch, if there is one*, is located on the lower portion of the radiator just in front of the turbo outlet pipe. Here is a picture.
You may also have one of the fan relays failing. (On some cars, there were two relays, one for low speed and one for high). Here is a picture.
For general diagnostics of the cooling system, go here.
2 stage cooling fan wiring diagram here.
This also will tell you where to find other components to check, like the fan speed resistor, and provide other diagnostic checks.

Oct 16, 2008 | 1994 Saab 9000

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