WHEN DRIVING IN STOP AND GO TRAFFIC IN WARM WEATHER, THE ENGINE GETS VERY WARM AND I CAN SEE HEAT/SMOKE? COMING OFF THE RIGHT SIDE OF THE ENGINE. THE COOLING FAN STAYS OFF. OPEN ROAD DRIVING KEEPS ENGINE COOL. I REMOVED COOLING FAN RELAY CAP AND CLOSED BREAKER, ENGINE OFF AND THE FAN RUNS. WHAT TELLS THE FAN TO RUN (OR NOT)?
Theres a sensor either on the radiator or the intake manifold. it looks kind of like a spark plug with out the white part and has one or two wires going to it. go to you local auto part store and they should be able to show you diagram of where it is on the car. you might be able to take it out and clean it and then flush out the antifreeze. they usually stop working because of build up in the cooling system. if you going to do all that to it you should replace the thermostat also. do keep driving it like this because its only a matter of time before you blow a head gasket and ruin the engine.
The temperature sensor for this car is located on a heater hose on the drivers side near the battery and under the black air intake tube. Had the same problem on my 93. Replaced the sensor and the fan started working again. Very easy to replace. Unplug wiring connector, then unscrew the sensor out. Put some teflon tape on the threads of the new sensor and install tightly. Reattach wiring connector and you should be back in business.
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C190 is a 2.0 L OHV 8V engine same as marine 4AA1.
when warm did you try diesel test fuel?
runs now , right, or runs and stalls. right?
that be the biggest clue there.
besides black smoke.
lost compression hot.
or lost fueling hot.
simple test for compression and test fuel....... leaving what?
Yeah, I'm from Minnesota, so know what you mean. You need to check the flow of air. A couple things. Is it any better if you have the re-circulator on? Also, does the temperature gauge vary any between idle and driving?
Try idle in neutral with the engine running at driving RPM - does that make a change?
the cooling fans only come on when the engine gets to a certain temperature,they are not on all the time when driving above 40 MPH but will come on in stop & go traffic or when stopped at traffic lights after a short period......hope this helps....cheers
you may have blown the head gasket.
check the coolant level,is it low?
if it is ok,check the fan switch on the radiator,change the thermostat,and check that the fan is working.
the fan has to work,saab engines run very hot.
there is a after run fan switch as well that measures engine compartment temperature,and can start the fan even with the car off,so be careful.
with your description it sounds like your fans are not coming on, also sounds like the problem was never solved, sounds like you threw a lot of money at your problem also... check to see if the fans are coming on at the right times, seems like a n air movement over the radiator since you say it only gets hot in stop and go traffic... well when your driving at a constant highway speed guess what you have air movement through the radiator... check also a clogged ac condensor with bugs, pressure wash it out so the air can pass through it easily... please rate my help thanks
I have a 2002 Honda Civic Ex, it has been over heating but only in stop and go traffic, never on the freeway, i have replaced, timing belt, water pump, cooling fan relay, cooling fan switch, flushed radiator. There is no white smoke coming from the tail pipe and the oil is clean, when the car gets hot i can smell the coolant pretty strong, car has never completly overheated gets about 3/4 of the way til red.
Seems like you might have a couple of problems. First the gas gauge, check your fuses to see if they are still good. Then check the wiring as you may have a short or a bad ground. Lastly if everything checks out then you may have faulty sensor in the gas pump housing in the gas tank, and or faulty temperature sending unit located on the motor. As for your your overheating issue you may have a head gasket leak which these little motors are prone to having, or just a general coolant leak. I deduced this because you're constantly having to refill with water. You have a leak somewher, but to narrow it down to your head gasket check your oil to see if it's got coolant in it. It will look like chocolate milk and may even smell like coolant. Also check your tailpipe with the car running in park and up to operating temp, if you see white smoke coming out the tailpipe that white smoke isn't smoke but water vapor, caused by water entering the combustion chamber from the leaking head gasket and exiting the exhaust. Also you may have a faulty fan switch on your radiator. This would cause your engine to heat up drastically in bumper to bumper traffic because when you're driving cool air is rushing through your radiator, and when you slow down and stop so does the air flow, and if your fan doesn't kick in your radiator isn't able to do it's job and cool the coolant. Hope this helps.