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Author Topic: Mk2 Jetta 1.6d non turbo fan stays running sometimes after car is off  (Read 2320 times)

August 10, 2018, 04:44:58 pm

scaggsj

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Ok so it’s an 85 Jetta coupe 1.6 diesel non turbo all stock.

Sometimes when I shut the car off and take the key out the fan will continue to run an additional minute or so afterward. I don’t mind this at all but I’m curious if it’s supposed to do that. Anyone know?

I’ve ran into newer cars that do this but they are computer controlled and high performance. This seems excessive for a diesel that barley makes it to the half way line on the gauge. Both top and bottom hoses are equally warm.


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Reply #1August 10, 2018, 07:37:45 pm

libbydiesel

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Re: Mk2 Jetta 1.6d non turbo fan stays running sometimes after car is off
« Reply #1 on: August 10, 2018, 07:37:45 pm »
It is normal for the fan to run after the engine is off.  Any time the temperature at the coolant temp switch in the radiator exceeds the switch's target temperature, the fan turns on regardless of whether or not the engine is running or ignition is on.

Reply #2August 10, 2018, 07:46:36 pm

scaggsj

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Re: Mk2 Jetta 1.6d non turbo fan stays running sometimes after car is off
« Reply #2 on: August 10, 2018, 07:46:36 pm »
That’s a good feature and what I was hoping, thank you.


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Reply #3August 14, 2018, 04:38:55 pm

thomas m

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Re: Mk2 Jetta 1.6d non turbo fan stays running sometimes after car is off
« Reply #3 on: August 14, 2018, 04:38:55 pm »
Keep your fingers out of there when the engine is hot !! Some times it takes a minute or so to come on after shutting down. Easy to do if leaning over to inspect into the engine bay.
Thomas, Original owner since new:
1991 MK2 Jetta Non-turbo 1.6 diesel, Engine Code ME, 5 speed 020 AWY 04120 transmission, Hydraulic Lifters,
320,000 miles
Location: Vancouver, WA
LOOKING FOR REBUILD OPTIONS IN PORTLAND, OR OR ON THE WEST COAST

Reply #4August 14, 2018, 07:03:44 pm

ORCoaster

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Re: Mk2 Jetta 1.6d non turbo fan stays running sometimes after car is off
« Reply #4 on: August 14, 2018, 07:03:44 pm »
It scares the crap out of me when it comes on like that way after I shut it down.  The heat soak finally brings up the switch on the radiator and about that time I am reaching into the engine bay after something like the vacuum pump and whoa! get back!  OH yeah, just the fan again. 

Reply #5August 14, 2018, 07:06:42 pm

scaggsj

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Re: Mk2 Jetta 1.6d non turbo fan stays running sometimes after car is off
« Reply #5 on: August 14, 2018, 07:06:42 pm »
Have to keep that in mind for sure!


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