I'm one step away from taking it to the dealer. Got my emmissions test by October so I need to figure out something soon. What causes the P0128 code? Answer: This code is described as 'coolant temperature below thermostat regulating temp or threshold'. So should I start with the thermostat since it is the cheapest? The Thermostat manufacturer spec 195. Is the engine coolant temperature sensor connector free from corrosion and plugged in properly? What repairs can fix the P0128 code? This input is used by the Powertrain Control Module for engine control and as an enabling criteria for some diagnosis.
A quite noticeable clattering sound in other words. Once the engine reaches its operating temperature, the thermostat opens. In general, most hand held code scanners will not read anything above P1000 as P1000 and up codes are manufacturer specific. That will cause the temperature to be erratic. The dash guages still show the temp too high for the actual engine temp but since I know this, I am not too concerned. My husband has checked everything he could think of with the heating system. Explanation The powertrain control module verifies that the engine is at a proper operationg temperature.
Now I was running between 190 and 215 on a consistant basis with no issues and the P0128 code was not coming back. Actually they are in the same housing, It's just a 3 wire setup. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time. If the hose gets hot all of sudden like it should, then the next thing to check is the reading you are getting from the coolant temperature sensor. Seeing that the code definition is not found on the scan tool I am using, I am wondering if there is something that is out of date.
I went and got it done and now everything seems to be working correctly. I will have to do the rest tomorrow. After running the engine for another 15 minutes, the temp peaked at almost the warning level on the temperature sensor. Leaking or stuck open thermostat. If so the thermostat may need replaced If not the engine coolant temperature sensor is most likely reading incorrectly due to a bad sensor or connection to the sensor.
The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. You probably do not have a radiator, heater core, or hose problem since the coolant temp is not getting to 210 like it used to. The fans could care less what the temperature says on the gauges because it goes off the second sensors readings. Now, I have to take the deck carpet off with the grills at the same time. I didn't reset the code just to see what would happen. If you have any doubt as to repairs on your vehicle, please contact your technician.
The surround are almost not even there, they are part of the cone, so its paper. It could be a bad coolant temp sensor or a bad inlet air temp sensor but is most likely a bad thermostat. Where I am, the it's cold, but not extreme, about -10C right now. Not only that but they were 8ohm speakers. During the warmer months, the ambient temps will help the vehicle warm up normally, whereas the cold weather will make it harder for the engine to warm up. The temperature from the thermometer should be around 200 degrees fahrenheit, normally.
Good luck figuring out what is going on with your Grand Prix! Thanks to everyone for their help. Drive a car for 10 minutes and check the engine temperature again, it should be close to 180-220°F or 82-105°C. Conclusion P0128 is not a serious threat to the immediate drivability of your Grand Prix. If you've already made it to the store, you might as well just replace it. We replaced the thermostat, had the radiator checked and cap replaced. The fan can come on at any time.
Here's aon replacing your thermostat. Letting them run too cool can problems after an extended period of time. Replacing the thermostat often solves the. Recently had engine cooling system flushed and coolant replaced. If you pinch your hose make sure that you are aware of the belted accessories and the fan. The resistance across the sensor terminals should change with the temperature according to the chart that you can find in the.
But, can anyone elaborate o … n this? Also I felt the therm housing after a drive and it seems to be hot enough, too hot to really grab. The vast majority of the time, they would be right. The system was flushed and filled this summer, by the dealer with dexcool. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. There should be two sensors. Hi Recently I scanned a trouble code P0128.