Engine block coolant sensor plug

deftsound

Please ask me how much my supercharger cost
Apr 6, 2004
945
1
39
Texas City TX
well the t fitting i put in for my coolant temperature sensor hasent really been workin out too well. Readings are way distorted and innacurate it seems.

Id like to be able to utilize the plug in the driver side of the engine block where most people put their aftermarket sensors but last time i tryed to get it out i couldnt. Is their a special trick to getting that plug out? Did you guys have to use a swivel joint or anything to get it out?

When i tryed to get it out i found it extremely difficult because i couldnt get any torque on it because it was a pretty awkward place to get a socket wrench into. Any suggestions?
 
no no, its down by the oil pan heres a pic:

Also i want to ask, what would would happen if i put the aftermarket sending unit in the place of the stock one and just had a dead stock gauge. I wasent sure if the computer or fan relyed on temperature readings taken from it to run the car or not..
 
Yeah,don't disconnect the factory sender,the computer needs it for all kinds of stuff from timing to fuel adjustments. Plus the aftermarket sensor needs to be grounded to work,which it won't being in a plastic manifold. I tapped a hole in my plastic intake and ran a ground wire to a bolt to get mine to work.
 
can you explain to me how you tapped a hole in the plastic intake. I probably sound like a noob by asking but ive never tapped a hole into something like that. How difficult is it and where did you tap the hole? Any chance of getting a pic of it?

btw my gauge is mechanical not electrical so i dont think it needs to be grounded
 
I measured the diameter of the threaded part of the sensor and used a drill bit one size smaller. BUT,you should start with a much smaller bit and work your way up to the proper size,probably will take you 2-3 steps. That's just to minimize the risk of cracking the intake itself. Then I just slowly threaded the guage in with a ratchet. Didn't have to use any teflon tape or anything. It's been that way for 2 years now and have never had a leak. Being your guage is mechanical,no,it won't need to be grounded. I don't have a pic here at work but if anyone wants to see it,I can post it up here later.
 
I used a 9" standard with a 3 or 6" wobble extension when I did mine. Work sort of like a swivel joint, picked it up at Harbor Freight for like $5. The wobble extention allows the socket to pivot a little and that's all it needs.
 
deftsound said:
i would really like to see a pic because i wouldnt know where on the intake manifold to mount it
487843_74_full.jpg


The red area is where the new fitting would be tapped. The blue is the original sensor.

Sorry for the crudeness...I'm at work and I don't do well with MS Paint.:rolleyes: