85' passenger side fan switch wont go back in
10-26-2013, 07:58 PM
#1
Drifting
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Member Since: Aug 2013
Location: Everett Washington
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85' passenger side fan switch wont go back in
took the switch out so i would break it during manifold removal, broke it trying to get it back in 
it wont start in the threads i have used another sensor with the same Threads and the same thing i cant get it to screw in, any input?
it wont start in the threads i have used another sensor with the same Threads and the same thing i cant get it to screw in, any input?
10-26-2013, 08:23 PM
#2
Not an L98 guy at all and there are plenty of them here.
but....
Are you talking about the coolant temp sensor/switch? Isn't that a common pipe thread? If so take it to Home Depot and buy a plug that is the same thread. Use the plug as a thread chase. When the sensor/switch will go in more smoothly, put pipe dope on the threads for final install.
but....
Are you talking about the coolant temp sensor/switch? Isn't that a common pipe thread? If so take it to Home Depot and buy a plug that is the same thread. Use the plug as a thread chase. When the sensor/switch will go in more smoothly, put pipe dope on the threads for final install.
10-26-2013, 08:39 PM
#4
In that case the only thing that occurs to me is I see you are in Washington. Is the iron head really cold? Is it a matter of thermal expansion where a cold head has a smaller hole? If you put your 1/2" pipe in the freezer for a while will it thread in ok? Of course if you're working in heated space then this whole idea is out.
10-26-2013, 08:46 PM
#6
Sometimes when I can't get a thread started I can find success by holding the piece square to the hole but turn it slowly backwards CCW as if I were loosening it until it clicks and the threads are lined up then CW forward and it starts.
10-26-2013, 11:10 PM
#8
I did this 5x last week playing around with my mini fan temps.
Do not use a ratchet to start it. Do this with engine cold . Put right hand on top of engine and with left hand go in between egr tubes and try to start the threads. You can't see because you can't look down at that point. Just feel the force like Yoda. My challange has been not to loose a gallon of anti freeze just to switch sensors. It is a bit of an very odd angle, but dont start it with a ratchet or it can strip with fingers won't strip. I used long spark plug boot needlenose to put connector on and off easily.
Good luck
Do not use a ratchet to start it. Do this with engine cold . Put right hand on top of engine and with left hand go in between egr tubes and try to start the threads. You can't see because you can't look down at that point. Just feel the force like Yoda. My challange has been not to loose a gallon of anti freeze just to switch sensors. It is a bit of an very odd angle, but dont start it with a ratchet or it can strip with fingers won't strip. I used long spark plug boot needlenose to put connector on and off easily.
Good luck
Last edited by xrav22; 10-26-2013 at 11:17 PM.