Engine coolant sensor
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Joined: Apr 2022
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From: New Middletown
Engine coolant sensor
Several years ago I replaced my engine coolant sensor which was a pretty simple and easy process. Couple years later I had some work done and afterwards noticed very hard starts at times especially after it's been sitting a while. I took it to auto zone and had code checked and it said P0118 which is the sensor. I popped the hood to find its in there but not plugged in and I can't find the harness anywhere. Can anyone tell me where to look or where it goes to? Doing research it says that a faulty one can cause issues starting the vehicle. Any help would be greatly appreciated
Welcome to the forum
Depending on the year and engine model there are usually TWO temp units
ECT sensor has 2 wires and is 5volt, only used by the computer, if not working can cause hard starts
Coolant temp sender is 12volt, and only used by the dash board gauge, can be 1 wire pre-1998 or 2 wires in later years, can't cause engine issues
So what year is your Ranger and what engine do you have?
Depending on the year and engine model there are usually TWO temp units
ECT sensor has 2 wires and is 5volt, only used by the computer, if not working can cause hard starts
Coolant temp sender is 12volt, and only used by the dash board gauge, can be 1 wire pre-1998 or 2 wires in later years, can't cause engine issues
So what year is your Ranger and what engine do you have?
Thread Starter
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Member
Joined: Apr 2022
Posts: 7
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From: New Middletown
Several years ago I replaced my engine coolant sensor which was a pretty simple and easy process. Couple years later I had some work done and afterwards noticed very hard starts at times especially after it's been sitting a while. I took it to auto zone and had code checked and it said P0118 which is the sensor. I popped the hood to find its in there but not plugged in and I can't find the harness anywhere. Can anyone tell me where to look or where it goes to? Doing research it says that a faulty one can cause issues starting the vehicle. Any help would be greatly appreciated
2005 Ranger had 3 engine options, 3.0l or 4.0l engine, they are at different places, but near the same place
2.3l didn't have an ECT sensor, had CHT instead
Usually the ECT will be at top front of the engine, on or near thermostat housing, so its connector wires will be part of the fuel injection harness that runs around the upper intake manifold, so the missing connector could be tucked away under the throttle body, the main harness usually runs down the drivers side of upper intake then under the throttle body to the passenger side
What work was done on the engine?
2.3l didn't have an ECT sensor, had CHT instead
Usually the ECT will be at top front of the engine, on or near thermostat housing, so its connector wires will be part of the fuel injection harness that runs around the upper intake manifold, so the missing connector could be tucked away under the throttle body, the main harness usually runs down the drivers side of upper intake then under the throttle body to the passenger side
What work was done on the engine?
Thread Starter
|
Member
Joined: Apr 2022
Posts: 7
Likes: 1
From: New Middletown
2005 Ranger had 3 engine options, 3.0l or 4.0l engine, they are at different places, but near the same place
2.3l didn't have an ECT sensor, had CHT instead
Usually the ECT will be at top front of the engine, on or near thermostat housing, so its connector wires will be part of the fuel injection harness that runs around the upper intake manifold, so the missing connector could be tucked away under the throttle body, the main harness usually runs down the drivers side of upper intake then under the throttle body to the passenger side
What work was done on the engine?
2.3l didn't have an ECT sensor, had CHT instead
Usually the ECT will be at top front of the engine, on or near thermostat housing, so its connector wires will be part of the fuel injection harness that runs around the upper intake manifold, so the missing connector could be tucked away under the throttle body, the main harness usually runs down the drivers side of upper intake then under the throttle body to the passenger side
What work was done on the engine?
Thread Starter
|
Member
Joined: Apr 2022
Posts: 7
Likes: 1
From: New Middletown
2005 Ranger had 3 engine options, 3.0l or 4.0l engine, they are at different places, but near the same place
2.3l didn't have an ECT sensor, had CHT instead
Usually the ECT will be at top front of the engine, on or near thermostat housing, so its connector wires will be part of the fuel injection harness that runs around the upper intake manifold, so the missing connector could be tucked away under the throttle body, the main harness usually runs down the drivers side of upper intake then under the throttle body to the passenger side
What work was done on the engine?
2.3l didn't have an ECT sensor, had CHT instead
Usually the ECT will be at top front of the engine, on or near thermostat housing, so its connector wires will be part of the fuel injection harness that runs around the upper intake manifold, so the missing connector could be tucked away under the throttle body, the main harness usually runs down the drivers side of upper intake then under the throttle body to the passenger side
What work was done on the engine?
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Joined: Mar 2020
Posts: 850
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From: US
seems to serve no practical purpose & gets in the way of putting an eye on things that need routine inspection.
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