Engine Coolant Temperature Sensor

[nonnac]

hey guys, just looking for some help,

my car is running rather rich and my Engine Coolant Temperature Sensor light is on, but ive replaces the sensor with a new one to no success. ive tested through the new sensor, all tests fine cold and hot, tested the connection plug and there is 5 volts so thats fine. im not to sure what else is to check, just need some advice on what to do next.

thanks

[reeceo21]

Mechanics scan tool can generally tell you if the computer is getting the high temp, sounds like wiring could be dodgy

[mad082]

are you sure it's the coolant temp sensor? take a pic of it. it may just be the cat temp sensor (common light that comes on). this doesn't really make the car run rich though.

[nonnac]

hmm yeah ill take a pic and upload it tonight, it looks like a diaphragm with 3 heat streaks coming off it ( now i look at it it does look like a cat) . i had a look under the car and i found the cat heat sensor, and it was tucked up under the cars body just sitting there and my cat doesnt have a sensor port to put it in. very strange that ive never seen the light before.

[gotRICE?]

Yeah thats the cat light.

Strange that its lighting up not being plugged in. Mine was tucked under the exhaust shield for 3 years and no light. Now its been completely removed and thrown in a bin somewhere with still no issues. Maybe the wiring has been damaged?

[nonnac]

yeah sensor failed so i just d/c it from connector under the seat and no light cheers guys

high idle was due to tps being set at 1 Volt on idle, fixed that and should be fine ill need to see in the morning on the way to work,i think ive figured out why its running rich too let you guys know.

[mad082]

high TPS voltage would've been causing it to use higher load cells in the mapping, so it would've been running richer with less timing. it should go a bit better now that it will be running leaner with more timing.