North American Turbocoupe Organization



Some help identifying this part/sensor please?
BoostedEcoCavi Offline
Member
#1
I finally found my coolant leak, but I don't know what this sensor is that its leaking from.

It is located right under the exhaust manifold between cyls 1 and 2. It has a push on connector.

Of course I assume it is the coolant temp. sender for the gauge, but I searched and found a pic of sensor locations, and the 2 coolant temp sensors are near the intake mani?

Can someone help? Thanks!
2003 Cavalier: 15.193 @89.25mph 2.187 60'......1988 Thunderbird TC: 15.160 @88.93mph 2.079 60'
http://i10.photobucket.com/albums/a128/b...ecobk9.jpg
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Jeff K Offline
Administrator
#2
There is no factory sensor under the ex man between cyls 1 and 2. However, that is the place that a freeze plug bolck heater is installed, either factory or aftermarket. Is it about 2 inches in diameter? Id so, it is a block heater.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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BoostedEcoCavi Offline
Member
#3
Ah yes, thanks a ton Jeff! It has to be the block heater. Knowing that, I probably could have followed the wires to the plug, doh!

I wonder how I would remove it. Does the whole thing screw out? Since it is leaking, I guess I could just cap it off? I miss driving the bird, my cavalier just isn't the same.

So my question now is how to remove the block heater. Anyone know?

Thanks!
2003 Cavalier: 15.193 @89.25mph 2.187 60'......1988 Thunderbird TC: 15.160 @88.93mph 2.079 60'
http://i10.photobucket.com/albums/a128/b...ecobk9.jpg
Reply

BoostedEcoCavi Offline
Member
#4
Ok I think I fixed the leak. There was a small bolt that came loose on the bottom part of the block heater connector.

I screwed a new bolt in to seal it.

I still couldn't figure out how to get the block heater out though........
2003 Cavalier: 15.193 @89.25mph 2.187 60'......1988 Thunderbird TC: 15.160 @88.93mph 2.079 60'
http://i10.photobucket.com/albums/a128/b...ecobk9.jpg
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xcrunnerbd Offline
Posting Freak
#5
Many cold days/nights here made me wish long ago I had one!
Project 13 sec. / 30mpg in '88 TC 5Speed : [email protected] / 32+ mpg

On The Car: KN cone, 2-stage [email protected] 15psi wired to fuel switch, Kirban AFPR @ 39psi, Walbro 255 HP FP, 130A 3G Alt., Full 3" Stinger Exhaust incl. cat. no muffler,

Shelf: .48 T3, ported E6, BPV
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Jeff K Offline
Administrator
#6
Block heater fits in pretty much like a regular freeze plug.... more or less just an interference fit. They have an O ring that seals in the hole, and the screw in the center operates some expanding fingers inside the water jacket that holds it in place. To remove it, loosen up the screw / nut in the center, and then pry it out.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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BoostedEcoCavi Offline
Member
#7
Cool I really appreciate the help. Well, I am thinking that those expanding fingers have broken off inside of the water jacket.

The bolt was just hanging there, and it looked nicked up. I hope the screw i put in there will stop the coolant from leaking.


xcrunnerbd: both my birds have factory block heaters and neither one works, so dont be too jealous lol.

Thanks again for the help!
2003 Cavalier: 15.193 @89.25mph 2.187 60'......1988 Thunderbird TC: 15.160 @88.93mph 2.079 60'
http://i10.photobucket.com/albums/a128/b...ecobk9.jpg
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