Windy_Miller
Guest of the Club
?Hi All,
This is on my 987.2 CS, but I suspect it’s a similar system / set up on all caymans, and boxsters.
since Friday last week I’ve had a dash warning repeatedly come up (in the main info area in the Rev gauge) stating, ‘engine compartment fan failure’, and then the red light at the far right of the engine water temp gauge flashes at ~1hz.
this light (flashing at different rates, or on solid) indicates different faults. The ~1hz flash is that the engine compartment is too warm (ie that the fan is not venting out the warm air).
This is the fan situated behind the right hand side (UK driver side) rear quarter grille. It’s purpose is to draw warm air out of the engine compartment. It operates at 2 speeds and generally comes on if/when the car is stationary in traffic, or once parked up and switched off after a longer drive. It then runs for a few minutes to vent out the warm air from the engine bay.
despite the warning light telling me the fan had failed it clearly hasn’t as I can hear it operating seemingly constantly after the engine warms up, and runs after parking up and getting out.
I’ve researched the usual forums (planet 9, pistonheads etc) and a typical issue is that the engine compartment temperature sensor has dislodged from its Position between the intake plenums on the engine and has dropped down on its short loom to rest on a warm part of the engine.
I’ve accessed it by removing the top engine access cover and it was in correct position and no apparent damage.
sometimes, after a while, the warning and dash light just clears itself.
ive not checked relays / fuses but I’m presuming that these are fine as the fan is working.
so my ‘diagnosis’ is the temp sensor must be faulty, and is always reading the engine compartment is over hot, ergo the control unit ‘determines’ the fan must have failed as it’s not cooling the compartment down, and is also constantly telling the fan to operate.
thoughts / similar experiences anyone? ??
im planning to change the sensor - its only £22 from OPC, but no chance of getting one this side of zombie-plague nation COVID lockdown ??????????????????
?
thanks, Jason
This is on my 987.2 CS, but I suspect it’s a similar system / set up on all caymans, and boxsters.
since Friday last week I’ve had a dash warning repeatedly come up (in the main info area in the Rev gauge) stating, ‘engine compartment fan failure’, and then the red light at the far right of the engine water temp gauge flashes at ~1hz.
this light (flashing at different rates, or on solid) indicates different faults. The ~1hz flash is that the engine compartment is too warm (ie that the fan is not venting out the warm air).
This is the fan situated behind the right hand side (UK driver side) rear quarter grille. It’s purpose is to draw warm air out of the engine compartment. It operates at 2 speeds and generally comes on if/when the car is stationary in traffic, or once parked up and switched off after a longer drive. It then runs for a few minutes to vent out the warm air from the engine bay.
despite the warning light telling me the fan had failed it clearly hasn’t as I can hear it operating seemingly constantly after the engine warms up, and runs after parking up and getting out.
I’ve researched the usual forums (planet 9, pistonheads etc) and a typical issue is that the engine compartment temperature sensor has dislodged from its Position between the intake plenums on the engine and has dropped down on its short loom to rest on a warm part of the engine.
I’ve accessed it by removing the top engine access cover and it was in correct position and no apparent damage.
sometimes, after a while, the warning and dash light just clears itself.
ive not checked relays / fuses but I’m presuming that these are fine as the fan is working.
so my ‘diagnosis’ is the temp sensor must be faulty, and is always reading the engine compartment is over hot, ergo the control unit ‘determines’ the fan must have failed as it’s not cooling the compartment down, and is also constantly telling the fan to operate.
thoughts / similar experiences anyone? ??
im planning to change the sensor - its only £22 from OPC, but no chance of getting one this side of zombie-plague nation COVID lockdown ??????????????????
?
thanks, Jason