OverHeating problem. HELP

[sleeper07]

uhh... yeah man . . . . . . . if u read what i typed i should know this.

[matt4pl]

running a car without a thermostat is plain stupid. the coolant will flow too fast and not actually absorb the heat from the block. sensors will read cold while you'll be melting holes in the pistons. also if your gauges spikes and then returns to normal, its air bubbles.

also check the front of the radiator or the a/c condesnor if you have it and see if its clogged up with stuff. clean it ouf if it is, etc

[sleeper07]

ok thanks for the info dont be a jerk

[albert_ey]

Is this an automatic? This might sound stupid but, my brother had a car before that was overheating and it turned out that the transmission was not changing gears right.

So it was making the engine over work so that it would change gears. Again this was an older automatic car, so I don't know it these transmissions work the same.

[ZOOMIGUEL]

i have had same exact problem, i bought two diff thermos

and new water pump and new radiator,..... ended up being THE COOLANT TEMPERATURE SENSOR. located on intake manifold, next to top radiator hose.

i bought a 20$ CTS and it ended up going well.

and i suggest take off the thermostat and use water... no need for antifreeze in fall, and no need for thermo in fall, i reinstall in november then its back to antifreeze

[sleeper07]

I going to do a rad. flush on the weekend. It hasn't been overheating much... only once in a while so i don't know.

[matt4pl]

you can test the temp sensor with a multimeter but usually the sensor gets coated with mineral deposits making it read colder. usually. zoom's case is the 1st ive heard of having it read a high temp, but that i guess could be internal shorting. you'd need a temp gun or probe or some way to verify the actual temp though. its a NTC type thermistor so resistance goes down with an increase in temperature.

also, the sensor reads coolant temperature, not physical engine temperature. running without a thermostat will give you a false idea of whats going on. think about this: notice how the actual area of the thermostat that opens is much smaller then the overall diameter of the tube it fits into. reason being is the thermostat, even when fully opened, creates a restriction to flow specific to the engine to keep it at its proper operating temp. look at any thermostat from any car and they're all made that way. its kinda like sticking ur hand in hot water, if its only in there for a second, not a lot of heat energy can transfer from the water to your hand, keep it in there longer and you're gonna get toasted. thing is you don't have a radiator to cool your hand off but thats besides the point.

[silpena]

Idk if anyone asked but when did it start over heating? before or after you changed all the parts and bled? I f u did it because it over heated in the first place, then i bet ur head gasket is gone. It could be just a fine crack in it letting all the pressure from ur pistons getting into ur system. That happened to me. If u haven't blown ur gonna blow it soon with ur car over heating all the time. You also said coolant shoots out of ur resivoir tank? It pretty muxh means their's pressure built up in ur system meaning ur radiator can't cool the evaporated coolant(i think or something like that?) I'm betting it ur head gasket or something as simple as a radiator cap.

[sleeper07]

caps new

[silpena]

hmm then ur radiator is clogged or something...... did ur car over heat before u swaped the new parts? or was it running fine?

[bakero]

Best thing to do is flush the radiator yourself. They have different chemicals/pellets that you can put in it. I'd says tick with the green coolant and flush a bunch of water thoguh it. More than likely, you have an air pocket around your tstat. I'm almost 90% sure this is the problem. We had this problem with one thta came in our shop about a month ago, but they said the shop told them it was the head gasket. We flushed it and used the same pellets we use in gm vehicles to flush it and htey came back the next day saying it didn't help. We then reflushed it, took off both hoses, inspected the waterrpump, and we haven't heard anything from her since then.

[sleeper07]

it was overheating

today i opened rad. cap and i saw brown stuff and it smelt like oil .

[silpena]

BLOWN HEAD GASKET dude.... sorry but if its oily and milky its blown or a really dirty *** radiator. If u wanna keep trying get it rodded out at radiator shop. That can help or if ur mechanically inclined and confident u can spend like 140 dollars and fix it ur self. heres a run down on what u'll need.gasket(head, intake, exhaust) about 65 totalhead bolts- about 30-50rtv sealer- 5new oil- about 13 new filter-3 head shaved if in spec- i believe 0.014 is the limit but I'm sure u can go lower just make sure u get the timing cover shaved too or ur distributor won't line up or go in or u can cut the gasket at that part it won;t hurt anything) around 35-40coolant-7 total around 90-110 and not but last a fsm and a friend or two with tacos!(i gave my tacos hes hella Asian/jdm and loves Mexican food)and mostly the fun of fixing it ur self and not some dousche who wants like 1.2 k for the job. For me it was like 90 untill i screwed up dropped a washer in the timing cover and into the oil and gave up so i sent to a mechanic and for 400 it was all good