I have the 2.4L 16 valve motor in my Stratus and had to have the head gasket replaced. Since doing that the coolant temp never goes past the second mark on the gauge, not even close to the half way mark. And now that winter is setting in I just don't get the heat into the cabin like I use to because of the low coolant temp. Any ideas as to why the coolant temp stays so low?
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Low temperature results in a high signal voltage. When the PCM sees a signal voltage higher than 5 volts, it sets this P0113 check engine light code.
P0118 - Theengine coolant temperature (ECT) sensoris a thermistor screwed into a coolant passage in the cylinder head. Sensor resistance is high when coolant temperature is low and resistance drops when coolant temperature increases. The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. The PCM monitors voltage drop to determine coolant temperature. If the ECT reads less than freezing temp. when engine has been running for more than a few minutes, the PCM determines a circuit fault and sets this code. Or if the PCM determines the sensor resistance is out of specs, this code is set. Potential Symptoms
check your water pump and ects (engine coolant temp sensor) and just replace head gasket the other thing to check for low idle is under the throttle body is a erg valve it it what lets in more or les air depending on the temp of the engine it has coolant lines going to it and if blocked can not work of this help
Your vehicle is what...16 years old? Parts do not last forever. I can't see changing the pump twice unless the old one was defective. There is no reason to replace a pump unless it leaks or is noisy. OK, now the low coolant light is on. Is the coolant low? Is the engine running hot? Low coolant sensors have been notorious for failing. If the level is good and it's not overheating you can either remove the indicator and replace it or just disconnect it and routinely check all your fluids (you should be doing that anyhow) once a week. Cars did not have or need that sensor for many years. Gas stations used to check fluids when they actually could afford to have people pump your gas for you. It only takes a few minutes and isn't a difficult task to check everything over now and then. If you have found the level to be low, re-fill it and check again for leaks. White smoke from exhaust can mean a bad cylinder head gasket as can oil in the coolant or coolant in the engine oil. I've found some vehicles (including one Jeep I own) that will not keep the overflow full but never overheats or has problems. Some head gaskets deteriorate and begin to seep coolant on the outside of the engine. That kind of leak often evaporates on the side of the block and never drips on the ground. Check around the head/block parting line. If you find a crusty white or greenish residue there, run the engine and watch that spot. If it gets damp there, it's leaking. As long as it continues to run well and the temp stays normal, everything should be OK.
Ok, some clues, good. When the jeep has been driven for 10minutes, it should be at operating temperature. What does the temp. gauge indicate at that time? Is it on the low (cold) side, in the middle (normal) or near the hot end of the temp. gauge? Let me know the answer to the above, also check to coolant level and let me know what you find. If the coolant level is low, it can result in the engine running hot, and result in no heat. When the level is low, it won't circulate coolant through the heater core, which means you won't have heat. So let me know about the engine temp, and the coolant level, this is the easiest and simplest possibility of why you don't have heat. If this isn't the problem, do not rate my answer until I can help further after I get the above info from you.
tran should be ok need to take head to repair shap and be sure head is ok and not cracked. thermostat, radiator, or cap, hoses need to be checked to dtermine what caused it to run hot also check engine fan. Pls rate this solution