Blk 93

Following someone's suggestion to pressurize my cooling system to isolate a coolant leak,
I discovered it's one of the thread in sensors behind water pump tower, which is consistent with where
coolant was puddling on the ground and amount of coolant I lost.
All my hose + clamp connections appear to be holding OK under pressure.
One is a coolant temp sensor, I can't recall what the second sensor is for.

I'm hoping I can access both by just removing the alternator, and not the vertical hard actuator lines ?
Are these sensors supposed to be threaded in with, or without using teflon tape on sensor threads ?

I don't know whether to just tighten them a bit more, or pull them and install them again,
but will probably do both if I can reach them with a wrench.

Thanks

jza80

iTrader: (32)

Those sensors use a tiny thin o-ring to make the seal, if you have a leak at a sensor it is probably a bad o-ring. I know that you can access the fan thermoswitch with just the alternator removed, as I have done this myself. The o-rings generally don't go bad though but they can't really be reused either as they flatten out over time.

TomU

iTrader: (11)

Use PFTE thread sealant. Don't over torque it, it's aluminum. FSM should list torque spec

IRPerformance

iTrader: (41)

Those aren't pipe thread. Top sensor takes a sealing washer. The bottom gets an oring.

Sgtblue

iTrader: (16)

Been a while, but IIRC I ended up just removing both sensors to access the lower (fan thermoswitch). YRMV

Blk 93

Thanks guys, I'll back leaky sensor off and check