HELP! 626 2.5 FI temperature sensor issues

626 2000 2.5l
I had a check engine light on. Mechanic told me it was the temperature sensor so I had it replaced and have had trouble ever since. The electric fans do not come on like they used to. When car is warm and at idle, the temperature will all of the sudden start to climb after about 10 minutes. It gets just slightly over the half way mark before the fans kick on. It takes a minute or so for it to start dropping. I have had the car back as the check engine light keeps coming on. The mechanic really messed up the clip for the connector to the temperature sensor. It has to be held on with a zip tie at this point. The part doesn't even look like the right one. When I look at the connector the sockets look bigger than the tabs on the replacement sensor. I now have coolant dripping out of the overflow hose and a leak in the reservoir tank. The mechanic said the coolant leak must have been there and I missed it but it there is no way I missed it. It passed inspection so I assume they had to test it. This must be a new symptom some how caused by them.
Can anyone tell me what the Coolant temperature sensor's tabs should look like? These are thin and flat tabs.
Can anyone tell me how often the fans should kick on while a fully warmed up car sits at idle.
I don't want to take the car back as it seems each time brings new problems.
 
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I think you SHOULD bring it back, and make them fix it for free. They messed it up, they are liable to fix the problems they caused, no?
 
I've owned 4 Probes with the 2.5L and that sounds about right. To be honest, my fans almost never kick on. I have a spare coolant temp sensor, I believe it's a 2-prong connector. At least it is on my '95. Is the car overheating?
 
1) he might've gotten you the wrong sensor which means it has the wrong resolution/resistance values 2) the plug/wiring is ****** up and can mess up the readings, replace that s***!
 
again, that was the mechanic's fault, and you better not pay a dime for his mistakes. Make sure he (or preferrably someone else at the shop) fixes it, for free.
 

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