Question about 1992 kawasaki ZXR 400

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Hey, have a zxr400 l model 1992, keeps over heating at slow speed, just had brand new thermostat and fan switch fitted, but still keeps trying to overheat, any ideas??

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2002 Lincoln Continental - overheats

have a compression test done to check for head gaskets/cracks. check thermostat fitted correctly. If there is a viscous fan hub then replace it. if the bottom hose stays cool that indicates a blockage and that if the radiator is off the shelf new points to a thermostat fitted the wrong way . over haeting at lights goin slow or working at high rpms while loaded points to the fan hub. If electric fans then it points to the fact that they are not coming on. check ignition timing as a spark after TDC will cause overheating.. If at speed it over heats then check over drive operation as over reving the engine will also over heat the engine.

Dec 27, 2014 | 2002 Lincoln Continental


How to wire your new themostat

0a9962f0-eea8-41fa-881b-a1074d6aa966.pngThe heater has a transformer that steps down the line voltage supplied either 115v or 230v to 24 volts,a safe voltage to use for the thermostat's control voltage and a voltage which requires no license to install.
The most important thing to remember before you begin is that ,
Red or R is the "hot leg" of the 24 volts provided by the transformer and
Common or C is the "neutral leg" of the 24 volts provided by the transformer and
Common is the side of power which EVERY 24 volt circuit will terminate or return to in completing the circuit, thus the "Common " designation, note after each circuits device, be it AC or Heat or Fan,every 24 volt circuit returns to Common or it's circuit is not completed.
Every electric circuit ,regardless of voltage or polarity requires a device ,
without a device in a circuit, upon energizing that circuit it will be a direct short!
Red to Common, this will blow the fuse or worse the transformer if not protected by a fuse which some are not. If you have a device in the circuit you can energize a circuit, my point being do not let Red touch Common and as Common is grounded at the transformer, do not let Red touch any metal, as it is likely grounded too, so turn off power before doing anything.
Note the color of the wiring attached to your existing thermostat's terminals and make a diagram so you will not forget.
The new thermostat may have different terminals or more that you will not be using.
All thermostats have an R or Red terminal, it may be RC and an RH 2 separate terminals designating RC as red cool and RH as red heat.
There 2 terminals RC and RH are for 2 transformer systems which are obsolete old GE units so if you do have both RC and RH use a small jumper wire and connect the 2 terminals and wire the Red "hot leg" from the transformer to either RC or RH it will not matter if both are jumpered together, otherwise you will only have cooling or heating but not both available.
The Red hot leg of the 24 volts enters the thermostat on R and most modern thermostats are parasitically powered meaning they derive power from the heaters transformer, as a result the Common 24 volt neutral leg must be ran to the thermostat.
Note, the new NEST thermostats say they do not require Common to be wired, however 50% of the time the NEST will go dead in time and require a Common wire be used to power the thermostat satisfactorily.
Upon a call for heat the switch between the Red and White circuit closes making white electrically hot with the 24 volts which it sends out the white wire to the heater gas valve etc and return to common to complete the heat circuit.
Upon a call for AC the switch to Yellow closes and as you will notice the Fan switch on the thermostat has an AUTO and ON switch, in the AUTO position, upon a call for AC
the Yellow becomes hot with the 24 volts and as a result of the AUTO switch being closed, the indoor blower will automatically cycle as required.
The fan control for ON fan or AC is High speed, the fan control for heat is Low speed and controlled by a time or temperature delay at the initiation and termination of the heat cycle, this is to eliminate cold air from blowing until the heater warms up and upon termination it extracts the residual heat to not overheat the unit and be most efficient.
Green is the Fan circuit, it is the High speed fan and only used for heating with electric heaters as resistive heat strips or heat pumps and will be controlled in both heat and cool modes by the thermostat, this is designed in to the thermostat or part of the thermostats set up and programming if a universal type thermostat.
Common as explained is there to power the thermostat it being the other side of 24 volt power opposite from the red 24 volt hot leg.
Heat pumps will have an O and a B terminal, this gets the Orange wire on O if the reversing valve is energized in cool mode, if you get heat in the cool mode switch the Orange wire from O and put it on B, B is energized in the Heat mode.

This was not written for just heat pumps or any brand I had to pick a specific brand however this applies to all brands and types gas furnaces , heat pumps and electric heat.

on Oct 13, 2013 | Aube TH144HPN2H1C Thermostat: Heat-Pump...

1 Answer

No fan when ac kicks on Ihave a eb15b funace with a coleman ac

The heat will normally use a low speed on the fan, & the AC along with the fan switch on the thermostat will use the high speed. The thermostat turns that high speed on when there is a call for cooling & is the same switch if you were to manually turn the fan from auto to on. Try turning the fan on @ the thermostat. If it works, then replace your thermostat. If it doesn't, it could be a bad fan speed, a bad fan relay on a control board or external relay, or a loose or broken green thermostat wire.

Apr 14, 2014 | Coleman Home Electric Furnace Eb15b/Eb15d

1 Answer

Bryant programmable thermostat doesnt keep the temp have to put it on fan instead of auto

My guess is that you have gas heat. If this is the case, sounds to me like your main control board or depending on age of furnace, fan controller is not working. With gas furnaces, it utilizes 2 fan speeds. High for cooling, & Low for heating. Your thermostat only controls the High speed - switches when you turn your fan on & when there is a call for cooling. The only other thing I can think of is it is possible that the Low speed windings on the blower motor are open causing it to not turn on. Most motors have 3 to 4 speeds & only 2 are used. Switch the heat motor wires in the furnace (on the control board) with one that is on a spare terminal.

Feb 21, 2013 | Bryant Cube Series 1 Stage Heat/ 1 Stage...

1 Answer

I have replaced my 92 toyota pickup with new thermostat, heads, water pump,and radiator and it is still getting hot

When they come into my shop like this I check several things.First I check with a temperature gun whether it is actually getting hot( a gauge fault)Maybe your local garage may have one and check for you.If it is heating, as it approaches the fan cut in speed I check for operation of the fan.Electric fans usually can be tested by removing plug near thermostat housing or grounding this should turn on.If you have a viscous fan type(it is bolted to the front of the water pump and free wheels).This should begin to spin faster as the heats causes the viscous to bind.On this type you should feel the heat getting pulled off the radiator and fanning back past the engine and underneath the vehicle.Also ensure if there is a shroud that encompasses the fan and the radiator.Without this on, certain models can not draw heat off the radiator effectively.
Note also if you have air conditionally this should either turn on the electric fan also or switch on an auxillary fan located either beside it or behind the grille.
The fourth item checked is the lower radiator hose.Ensure as holding the revs at cruise speed that it doesnt flatten closed.This can be caused by going soft,or a restriction in the cooling system circuit,but you have indicated that the radiator has been replaced(I am assuming it is a new one)
Hope this helps or get back with your findings and we will work further on it.

Mar 27, 2011 | 1992 Toyota Pickup

1 Answer

Audi 80, 1992, fan not coming on.

Have you tried a fan relay?
I'm thinking there is a coolant sensor AND a fan sensor on that model.

Feb 23, 2010 | 1992 Audi 80

1 Answer

Goodman Evaporator fan runs continuosly

first disconnect the green stat wire wire could be bad if still runs change the board on the indoor unit pull board and take to goodman store with model number and serial number its under warrenty they will give new one hope this helps also look at dip switches and instructions to make sure ok

Jul 08, 2009 | Goodman Heating & Cooling

1 Answer

Trouble Installing Hunter Brand Thermostat

on the back of the packaging for the HUNTER MODEL 44155C it states that it is not compatible with heat pumps

Mar 01, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Goodman Air Handler motor will not turn off.

Look at your Thermostat wiring.
If there is a green wire going to the "G" terminal, disconnect it.

If it stops running, you have a bad T-stat.

If it keeps running, you either have a stuck fan relay or a low voltage control wiring malfunction.
Those are usually related to one of the safety switches having problems.

If green is not going to G, let me know, and we will determine which one is indeed the fan wire and go from there.

Remember, when you rate the solution, it closes further dialog, so only rate when you are satisfied with the discusion.

Thanks for visiting FIXYA!

Jan 03, 2009 | Goodman CLQ36AR49 Air Conditioner

1 Answer

1998 jaguar xj8 overheating.

The early XJ8s were designed to operate as you describe, only kicking the fans in with the AC which is fine when the cars warming up (in fact it helps the car warm up faster & use less fuel), however, Jaguar realised in some climates this was causing overheating, later ones (99my on) operate constantly with the ignition on at slow speed & speed up if it detects it needs to.

This is a complex 2 relay system with alot of wiring that goes into the ECU & cant easily be retrofitted to your one.

I`d advise you to take the car to a good auto electrician & ask him to fit a manual switch on the dash with a relay to the fans so you can turn it on manually when its warmed up (if he can fit a slow speed relay with a resistor as well as a full power one, all the better, as you dont want to over cool either).

I`d also advise you to get the thermostat changed every year & the water pump to be upgraded to the current spec one, as these are both known issues that occur & also cause overheating.

Best of luck!

Aug 30, 2008 | 2006 Jaguar XJ8

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