- COOLANT TEMPERATURE SENSOR LOCATION MANUAL PORTABLE
- COOLANT TEMPERATURE SENSOR LOCATION MANUAL PRO
- COOLANT TEMPERATURE SENSOR LOCATION MANUAL CODE
Incidentally, I've attached a table showing the range of data (parameters) that the ECM can provide to OBD scanners. Hesitation etc could be almost anything related to engine operation - fuel, air, spark. (If there are any codes, do not use the app to clear any codes that are identified.) If you haven't already tried it, next time the car is exhibiting the hesitation, check to see if the app shows any pending codes at that time.
COOLANT TEMPERATURE SENSOR LOCATION MANUAL CODE
Some OBD code readers will show "pending" codes. Sometimes, if a fault is detected in a drive cycle, the ECM will not turn on the CEL at that time (as noted above), but might save a "pending" code for that fault.
That should be able to read OBD engine codes.
COOLANT TEMPERATURE SENSOR LOCATION MANUAL PRO
I believe your active OBD is part of the Torque or Torque Pro app. Other codes, such as misfires, will flash the CEL at the time and ultimately set the CEL in a single drive. A symptom that shows up only in 1 in 10 cold start-ups, and might not be repeatable within a single drive cycle, might also not meet the requirement to set the CEL. Some codes are set only after a fault is detected in two consecutive drive cycles, and then only if other criteria are also met. Incorrect Ambient Temperature and/or Intake Air Temperature can also affect engine performance. When the engine is cold, and off, all the temperature readings should be the same. If this is the case, then the sensor itself would likely be working properly.Īlso, your readout should have Ambient Temperature, and Intake Air Temperature. Then, drive the car for some time and see where the temperature seems to stabilize I would expect it to be roughly in the 85 - 95 C area. It should be at or close to the ambient temperature where the car is parked. As a result, the fueling is calibrated for the engine at normal operating temperature rather than one that's cold.Īfter the car has been parked for some time, say, overnight, turn the key just to On (not starting the engine) and check the coolant temperature indication on your Active OBD readout. One interpretation of the sensor impact is that problematic engine operation when cold, but not when warmed up, could be caused by the coolant temperature signal being too high when the engine is cold e.g., the engine might be at 20 C, but the sensor is signalling 85 C. has reported coolant temperature versus lights on/off ( ) and perhaps might also have the temperature at which the blue light normally goes off. See RomRaider - Open Source ECU Tools | RomRaider / RomRaider, and do a title search here for thread titles that include Romraider - there's some that provide more information on setting up and using the program to advantage.Ĭlick to expand.I don't have any data on when the blue light should go out. I believe it will work with your UK 2011's ECU, but I'm not certain.
COOLANT TEMPERATURE SENSOR LOCATION MANUAL PORTABLE
portable laptop), and an inexpensive adapter cable to link the computer to the car's OBD connector. It runs on a Windows or Linux system (e.g. It's a free program, specifically for Subarus. One of the data series that is available is the ECT, so this could also verify if the sensor and the temperature light(s) are working properly. The problem description in the other thread could point to a vacuum leak in the intake system, or a faulty MAF, A/F, or O2 sensor.Ī scanner that can display, and better still, record, engine information including sensor signal values and fuel trims, might reveal an anomaly. I doubt the ECT sensor is causing the symptoms described here and in your other thread on this same issue:
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