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Discussion Starter · #1 ·
So i just picked up a 94 r package a month ago. Today after driving about an hour and then idling i noticed the temp gauge climbing, got back up to speed and it was normal again. Leading me to believe the cooling fan isnt turning on. Ive had this same issue with my 1990 and it was a simple fix with the cooling fan switch on top of the thermostat housing.

So i get home and do the diagnostics jump gnd-tfa and the cooling fan turns on just fine.
So with me being a noob with 1.8's im looking for the cooling switch on the thermostat housing, and scratching my head because its not there?

After awhile searching and getting mixed results im forced to make a thread asking where is cooling fan switch on a 94 1.8 or if its something entirely different from the 1.6's?
 

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its under the coil pack. there are 2. one is the gauge sensor and its threaded into the block and the other threaded into the housing back there is to the ecu.

check the basics before you start changing parts.

is the car low on coolant?
when was the t-stat last replaced?
whats the condition of the radiator?
did someone put some leak fix into it that clogged the rad?
 

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Try burping the system and see if that helps. Some people dont do it right.
 

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You guys give the worst advice, he knows what his problem is and it is evident from the symptoms that he is on the dot. As mentioned before, what you're looking for is on the back of the head under the cool pack
 

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Discussion Starter · #5 · (Edited)
its under the coil pack. there are 2. one is the gauge sensor and its threaded into the block and the other threaded into the housing back there is to the ecu.

check the basics before you start changing parts.

is the car low on coolant?
when was the t-stat last replaced?
whats the condition of the radiator?
did someone put some leak fix into it that clogged the rad?
From my understanding the 2 sensors in the back under the coilpack have nothing to do with the cooling fan, like you stated 1 sends info the gauge, and the other to the ecu. Im just not sure anymore, ive looked at so many diagrams that I have a headache now.
 

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Discussion Starter · #6 · (Edited)


Just to clarify
On the 1.6 this sensor/switch would turn on the cooling fan when the temps hit 207 degrees.

On the 1994 1.8 its now under the coilpack?
 

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Discussion Starter · #8 ·
Twibs415 and imnatelol Thank you guys! Sorry I doubted yall. Noob mistake, I over thought the situation and mixed up the 1.6 and 1.8's

For future reference anyone with this problem.
On the 1.8 the thermoswitch controlling the fan is incorporated with the ecu temp sensor.


On the 1.6 its seperate on the thermostat housing
 

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My cooling fan does not kick in but my a/c one does. Ive changed my t-stat and flushed my coolant and bled it. My car used to overheat but now it does not but ive noticed thst the temp stays at the 11 o clock position and when it gets real hot it will climb to the 12 O clock position. you guys think that the sensor may be bad causing my fan not to kick in? Ive tested the connector to the cooling fan and its getting power.btw my car is a 94 aswell
 
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