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#1
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Code P0118 Temperature Circuit High Output
My 98 Saturn SC2 DOHC "Check Engine Light" is on and code reads P0118 Temperature Circuit High Output. I've changed the thermosat and engine coolant temperature sensor and cleared the "CEL" with scanner but the "CEL" reappears within 5 minutes and so does the P0118 code. What should I be looking for or do to fix this problems? Can anyone help?
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#2
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Re: Code P0118 Temperature Circuit High Output
You might need to replace the temp sending unit plug. They are known to corrode. I'm not sure where to get one these days as I've always bought them from Saturn dealers.
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99 Rodeo LS 3.5L Stroker V-6, 4wd, 31x10.5x15 2 inch Trooper lift, Aisin manual hubs. 03 GMC Envoy XL SLT 4x4 5.3L V8 |
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#3
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Re: Code P0118 Temperature Circuit High Output
Correct me if I am wrong. Is the "Temperture Sending Unit Plug" one in the same as the "Engine Coolant Temperature Sensor"? If so, it was replaced with the an aftermarket brass type as recommended by many along with the thermostat which was the culprit for causing engine to overheat in heavy traffic in the first place. Two things, should I replace the temperature unit (sensor) with an OEM version and is there more than one temperature sensor on my 98 SC 2 DOHC? If so, where can it be located? BTW, thank you for the quick reply Cat Fuzz.
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#4
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Re: Code P0118 Temperature Circuit High Output
What I meant was, you need to replace the wiring connector that goes to the ECTS. I don't remember when but early Saturns had two temp sensors. One was just for the dash gauge and has only one wire coming from it. The other is for the computer and has two wires. The one with two wires is the important one. Yours might be of a year that there is only one.
If you have recently replaced the ECTS with a brass one, it is unlikely to be bad.
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99 Rodeo LS 3.5L Stroker V-6, 4wd, 31x10.5x15 2 inch Trooper lift, Aisin manual hubs. 03 GMC Envoy XL SLT 4x4 5.3L V8 |
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#5
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Re: Code P0118 Temperature Circuit High Output
Okay, that makes sense. You are right about the wiring connector, it was corroded. Will be replacing it on Thursday. Also, I found that I only have one ECTS with the two wires so you are right again. I'm crossing my fingers and hope by replacing the connector it will fix the problem (Code P0118). I will let you know what happens. Again, thank you for all the information Cat Fuzz.
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#6
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Re: Code P0118 Temperature Circuit High Output
It was the connector plug. All fixed and no code. You were great help CF, Thanks.
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#7
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Re: Code P0118 Temperature Circuit High Output
Cool.
__________________
99 Rodeo LS 3.5L Stroker V-6, 4wd, 31x10.5x15 2 inch Trooper lift, Aisin manual hubs. 03 GMC Envoy XL SLT 4x4 5.3L V8 |
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