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Ect sensor replace

Low water light stays on

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Replace the sensor in the coolant resovoir on the bottom of the jug. I'm assuming you did check the level.

Posted on Dec 12, 2012

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

frcs68
  • 1605 Answers

SOURCE: low water light stays on even though radiator is full

check the over flow container.

Posted on Apr 30, 2009

SOURCE: Check engine light was on,

No code will tell you about coolant levels
or thermostat
In fact, codes do not tell you anything is wrong

They direct you to one of the vehicles systems,
that has a sensor out of range.

Then you have to component test,to find out
why the code was set

What code is there now?
Who is diagnosing the vehicle?

I think you missed the issue and changed the etc sensor

Posted on Mar 06, 2011

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Can either of these codes cause my 1999 Oldsmobile bravada SUV to over heat: P0442 ornP1361 or P0117??


code p 0442 refers to EVAP system so that is unlikely
check the fan operation and if you have a viscous fan hub ( fan clutch ) replace it
if you have electric fans , check coolant temperature sensor for operation , fuses , relay and fans
overheating is from low coolant levels , head gaskets/cracked heads, blocked radiator cores , fins flaking off core tubes, incorrect timing, blocked exhaust( cat converter)problem thermostat, over loading /over speeding, overdrive not engaging
if you over heating is predominately at lights , slow moving traffic or high engine rpms with low speed --check the fan operation and if it is viscous fan hub driven --replace the hub or if electric fans have that circuit checked out

Sep 07, 2016 | 1999 Oldsmobile Bravada

1 Answer

Jetta Warning Light


It says that your vehicle is low on coolant.Get the coolant level checked.If low has to be changed.

------------Check out few help links related to your issue.Click the link below:---


Service 4wd warning light on Dash? http://howtobyme.blogspot.com/2011/11/service-4wd-warning-light-on-dash.html

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Car Turns OFF due to low oil pressure warning light? http://schematicsdiagram.blogspot.com/2011/12/car-turns-off-due-to-low-oil-pressure.html

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Hybrid warning Light ON? http://whatisbyme.blogspot.in/2012/05/2005-toyota-prius-hybrid-warning-light.html

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Order Coolant Bypass Tube? http://whatisbyme.blogspot.in/2012/05/1991-toyota-camry-order-coolant-bypass.html

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Coolant Leak? http://technoanswers.blogspot.in/2012/04/1994-toyota-camry-coolant-leak.html

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COOLANT LEAK AT DRIVER SIDE NEAR FIREWALL? http://schematicsdiagram.blogspot.in/2012/04/2006-cadillac-dts-coolant-leak-at.html
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MAF, IAT, MAP and Coolant Level Sensor problem all together? http://schematicsdiagram.blogspot.com/2011/12/maf-iat-map-and-coolant-level-sensor.html

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Engine Coolant Temperature (ECT) Sensor Replacing? http://schematicsdiagram.blogspot.com/2011/12/gmc-engine-coolant-temperature-ect.html Loosing Coolant? http://whoisbyme.blogspot.in/2012/06/loosing-coolant.html
---------- Coolant temperature sensor dies again and again?


http://schematicsdiagram.blogspot.com/2012/01/coolant-temperature-sensor-dies-again.html
----------- Where to Add Coolant? http://repairhelpcenter.blogspot.in/2012/06/2000-daewoo-lanos-where-to-add-coolant.html
-----------
------------ Blue Water Warning Light on Dash? http://whatisbyme.blogspot.in/2012/07/blue-water-warning-light-on-dash.html

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Oct 09, 2012 | 1995 Volkswagen Jetta

3 Answers

P0128 (and P0116) on 2006 GMC Sierra v-8, 5.3L, 4x4. Originally getting low temp readings on guage. After replacing the thermostat, the problem seemed to be fixed. A few days later, I was getting my...


P0116 - Engine Coolant Temperature (ECT) Circuit Range/Performance Problem
The ECT (Engine coolant temperature) sensor is a thermistor which changes resistance based on temperature of the coolant in contact with it. The ECT sensor will be located in the block or coolant passage. Usually it is a two wire sensor. One wire is a 5 Volt supply from the PCM (Powertrain Control Module) to the ECT. The other is a ground to the ECT.

As the temperature of the coolant changes the resistance on the signal wire changes accordingly. The PCM monitors the reading and determines coolant temperature in order to perform essential engine fuel management. When engine coolant is low, sensor resistance is high. The PCM will see a high signal voltage (low temperature). When coolant is warm, the sensor's resistance is low and the PCM will see a high temperature. The PCM expects to see slow resistance changes on the ECT signal circuit. If it sees a quick change in voltage that isn't consistent with an engine warming up, this P0116 code will set. Or if it sees a lack of change in ECT signal, this code may set.

Symptoms: There may be no noticeable symptoms if the problem is very intermittent, however the following may occur:
MIL (Malfunction Indicator Lamp) illumination
Poor drivability
Black smoke at tailpipe
Poor fuel economy
May not idle
May exhibit stalling or misfires

Causes: Potential causes of the P0116 code include:
Missing or stuck-open thermostat
Bad ECT sensor
Short or open on signal wire
Short or open on ground wire
Poor connections in wiring

Possible Solutions: If there are any other ECT sensor codes, diagnose them first.
Using a scan tool, check the ECT reading. On a cold engine, it should match the IAT reading or should be equal to ambient (outside) temperature reading. If it does match the IAT or ambient temp, check the freeze frame data on your scan tool (if equipped). The saved data should tell you what the ECT reading was when the fault occurred.

a) If the saved info indicates that the engine coolant reading was at the coldest exreme (around -30 deg. F) then that's a good indication the ECT resistance was intermittently high (unless you live in Anchorage!) Check for an open in the ECT sensor ground and signal circuits and repair as necessary. If they appear okay, warm the engine up while monitoring the ECT for any intermittent jumps high or low. If there are replace the ECT.

b) If the saved info indicates that the engine coolant reading was at the warmest exreme (around 250+ deg.F) then that's a good indication the ECT resistance was intermittently low. Check for a short to ground on the signal circuit and repair as necessary. If it appears okay, warm the engine up while monitoring the ECT for any intermittent jumps high or low. If there are replace the ECT.

Other ECT sensor and circuit related DTCs: P0115, P0117, P0118, P0119, P0125, P0128
--------------------------------------------------------------------------------------------------------------------

P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 code is to indicate a faulty thermostat. Similar codes: P0125

In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.

Symptoms: You will likely not notice any drivability problems other than the MIL illumination.

Causes: A code P0128 may mean that one or more of the following has happened:
Low engine coolant level
Leaking or stuck open thermostat
Faulty cooling fan (running too much)
Faulty coolant temperature (ECT) sensor
Faulty intake air temperature (IAT) sensor

Possible Solutions: Past experience indicates that the most likely solution is to replace the thermostat. However here are some suggestions on troubleshooting and repairing a P0128 OBD-II code:
Verify coolant strength & level
Verify proper cooling fan operation (check if it's running more than it should). Replace if necessary.
Verify proper engine coolant temperature (ECT) sensor operation, replace if necessary.
Verify proper intake air temperature (IAT) sensor operation, replace if necessary.
If the above items check out good, replace the thermostat
If Nissan vehicle, check for Technical Service Bulletins (TSBs), as the ECM may need to be reprogrammed to correct the P0128 code



These codes are telling you that the engine temperature is not sufficient. This can be caused by a faulty coolant sensor,air in the cooling system,or a faulty computer.
The engine should run at 190 F & higher when warmed up. Scan the computer system to view engine temperature.

Keep us updated.

Oct 01, 2011 | 2006 GMC Sierra

1 Answer

Check engine light came on and the code was 0128 ect sensor below themostat regulating temperature. how do i fix it?


A code P0128 may mean that one or more of the following has happened:

Low engine coolant level.
Leaking or stuck open thermostat.
Faulty cooling fan (running too much).
Faulty coolant temperature (ECT) sensor.
Faulty intake air temperature (IAT) sensor.

90% of the time it is the thermostat. I just replaced the thermo on my 2004 TB, it was giving the same code. You can still drive it with the problem and the ses light may come and go, but the problem will not go away--in the meantime, your mpg will drop significantly because the PCM will try to compensate for the low coolant temp. I gained 2-3 mpg easily after I replaced mine. It's a good idea to also replace the ECT at the same time, both the ECT and thermo require removal of the alternator to replace them and the ECT is right above the thermo.

Sep 24, 2011 | 2004 Chevrolet TrailBlazer

3 Answers

Where to add coolant for radiator on a 95 vw jetta?


Add Coolant to spherical reservoir at right rear of engine compartment as viewed from front. If it is low the coolant gauge flashing light will warn you of a low condition.

Jan 01, 2010 | 1995 Volkswagen Jetta

2 Answers

Diagnosing check engine light


Hello there:
There are several things that will cause this
Low engine fluids I.E water /oil/ transmission fluid/ brake fluid/powerstreering fluid/ windshield wiper fluid .ect ect
now the other harder things that will cause this is faulty plugs and or wires
overheating / or bad sensors like o2 sensors / map sensors / mass air flow sensors egr valves or pvc valves ect ect/
What i recommend is that you take the vehical to autozone and have them run the free diagnostic check on the vehical this way you will know exactly what the problem is and what should be done to correct this.
Once this has been corrected they can also clear the code for you ok? for free.
I hope that this is very helpful for you.
Best regards Michael.

Nov 20, 2009 | 2000 Dodge Caravan

1 Answer

Location of ABS wheel sensor 96 Astro Dayvan 2WD


most sensors are located at the wheel hub, you should see the reluctor gear mounted on the drive axles in the front, you may need to remove the wheel and rotor to get to it! is it all wheel drive or just front wheel drive, if front wheel drive you should follow the wire that goes to each wheel in the rear, if all wheel drive it may only have one sensor in the transphercase to monitor driveline speed.
you really should have some one scan the abs and find out the code/s and diagnose it, just cuase the light comes on doesent mean its the wheel speed sensor, it could be the abs module ect ect..., check the fluid level and make shure its not low and or dirty.

Sep 30, 2009 | 1995 Chevrolet G20

2 Answers

My saab,g reg keeps stalling when at trarric lights,round abouts ect or when the revs are low.


Hi my 2001 9-3 had the same problem. I replaced the crank position sensor and it fixed the problem.

Apr 06, 2009 | 2001 Saab 9-3

2 Answers

Heating System


The Engine Coolant Temperature (ECT) sensor is mounted in the intake manifold and sends engine temperature information to the ECM. The ECM supplies 5 volts to the coolant temperature sensor circuit. The sensor is a thermistor which changes internal resistance as temperature changes. When the sensor is cold (internal resistance high), the ECM monitors a high signal voltage which it interprets as a cold engine. As the sensor warms (internal resistance low), the ECM monitors a low signal voltage which it interprets as warm engine.
0900c1528008f125.jpgFig. 1: View of the Engine Coolant Temperature (ECT) sensor 0900c1528008f126.jpgFig. 2: Engine Coolant Temperature (ECT) sensor locationTESTING
See Figures 3 and 4
  1. Remove the ECT sensor from the vehicle.
  2. Immerse the tip of the sensor in container of water.
  3. Connect a digital ohmmeter to the two terminals of the sensor.
  4. Using a calibrated thermometer, compare the resistance of the sensor to the temperature of the water. Refer to the engine coolant sensor temperature vs. resistance illustration.
  5. Repeat the test at two other temperature points, heating or cooling the water as necessary.
  6. If the sensor does not meet specification, it must be replaced.
0900c1528008f120.jpgFig. 3: Intake Air Temperature (IAT) and Engine Coolant Temperature (ECT) sensor wiring diagram 0900c1528008f095.jpgFig. 4: ECT sensor temperature vs. resistance values

Oct 01, 2008 | 1993 GMC Sierra

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