Suzuki bulevard temperature llight comes on only if you ride over 80 mph, for short while. coolant level is fine,fan is working fine as well

welcome to USA forum we dont have this car here, no books
so can wax smart , like we can on USA cars.
so I say generically
can be.
ECT bad.
ECT lies, due to water pocket below, ECT, means low coolant level inside engine, not side water bottle but in engine and RAD.
check compression, yes.

Check coolant levels to ensure they are full. Check for coolant leaks.

What you describe could be considered normal if you are driving in hot ambient temperatures with full coolants levels. Ensure you are using coolant liquid not water.

If fluid levels are full (rad and overflow bottle) and there are no leaks and the temperature gauge is not show engine it running hot; then the sensor that controls the fan(s) should be replaced.

first check coolant level in radiator coolant level sound low.if coolant overflow jug empty.coolant sysyem low, when add coolant to coolant overflow jug coolant level should stay at full cold mark.if coolant level okay,engine overheat while sitting or moving in slow traffic either coolant fan relay or fuse could be bad.or engine coolant temperature sensor could be bad. coolant sensor turn on cooling fan at certain temperature.hot wire check to make sure cooling fan motor not bad or short in wires.if all is good have pcm check it controls fan relay to through the coolant temperature sensor signal when coolant get hot.

check coolant level could be too low allowing air in the cooling system causing air pocket in engine around the engine coolant sensor.coolant sensor needs to be in hot coolant so it will cause the cooling fan to come on at a set temperature.make sure coolant correct level and the coolant level in the cooling overflow jug should be at full cold mark.the cooling overflow jug should never be empty,if you see empty cooling overflow jug air got in the cooling system so make sure when engine cold every time raise hood make sure cooling overflow jug coolant level at full cold mark.if jug stay empty you have cooling leak.so replace radiator cap,if coolant level all good,i would replace the engine coolant temperature and thermostat.when your car come to a long stop or driving along long line of slow moving traffic the engine coolant blower motor should running if not have vechicle code scan for faulty coolant fan motor control module.or ecm problems.

COOLING FANS DONT TURN COULD BE FAULTY FAN RELAY.FAULTY PCM AND FAULTY COOLANT TEMPERATURE SENSOR.CODE SCAN FOR FAULTY PCM CODE AND A FAULTY COOLANT TEMPERATURE SENSOR.SEE IF ENGINE COOLANT TEMPERATURE SENSOR IS GIVING CORRECT COOLANT TEMPERATURE USING A CODE SCANNER.IF ENGINE IS 190 DEGREES AND THE ENGINE COOLANT TEMPERATURE SENSOR READING 100 TO 80 DEGREES COOLANT SENSOR IS BAD.HOT WIRE COOLING FAN TO SEE IF FAN MOTOR WORKS.BECAUSE COOLING FAN MOTOR COULD HAVE OPEN CIRCUIT CAUSING ELECTRIC MOTOR NOT TO TURN ON.

If I understand you correctly, your temp gauge shows correct operating temperature, your blower fan blows air that you can feel with your hand from the right floor or dash outlet, but that air doesn't feel warm until you are moving?

If so, several possibilities come to mind. One is that your coolant level is low. Even though your temp gauge reads in the right range, the coolant level could be low enough that it doesn't reach the heater core until there is enough engine RPM to create more pressure from the water pump and force what coolant is there toward the heater core. Another possibility is that your heater controls are not able to do their job. A stuck flapper in the duct or a malfunction with the temperature control system could be causing the problem, and at 15-20 MPH there is enough air coming through the outside air vents to provide some heat.

I'd check the coolant level first, though. The other possibilities are more far-fetched.

ENGINE GETTING TOO HOT AC PUTS MORE LOAD ON ENGINE AND OUT SIDE TEMPERATURE HOT.YOUR CAR TELLING YOU I AM HOT AND NEED A BREAK.MAKE SURE COOLANT LEVEL NOT LOW AND THE COOLING FANS RUNNING WHEN AC GOING IF NOT CHECK FAN FUSE IF FUSE GOOD.YOUR THERMO SWITCH NOT WORKING OR THE COOLANT TEMPERATURE SENSOR AND FAN CONTROL MODULE COULD BE THE PROBLEM IF THE FANS DONT TURN ON.

Most Suzukis A/C systems will cut out when the engine tempurature is too high (to reduce the load on the engine). Also, in this condition, when the A/C compressor cuts out, the A/C thermo fan (electric - in front of the condensor) may come on ( to try and cool the engine). Combined with the fact that your temp gage says the engine is hot, I would be checking your cooling system very closely. It could be as simple as leaves blocking the air flow through the radiator (between the condensor and radiator), or as serious as the internal cores of the radiator being blocked (different sorts of coolant being used can sometimes produce solid matter that can do this).

sound like coolant temperature sensor is open or not working.scan it to see when engine get operating temperature when coolant temperature get 190 degrees the coolant temp sensor should show 190 degrees if it shows 80 degrees or lower it not working replace it.the coolant sensor control coolant fan.when it gets hot it resistance changes or lower.the pcm grounds it .then cooling fans will run.

When engine is cold, remove rad cap & have a look at coolant level, as well as your return bottle. If you have to add to your rad level, make sure you have engine running & the heater on (not defrost) when your adding, and let engine get up to normal operating temperature & let rad fan come on & off 2 or 3 times before you top up last time & then put rad cap back on. If coolant is low in rad & return bottle has lots in it, you may want to replace rad cap in case it's faulty.