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Coolant Leak (Update: found the leak)


spiderw31

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I swear this car has never liked me for some reason. I always seem to be chasing my tail on problems, but I digress...

 

Yesterday I was changing the starter (again!), and I noticed coolant dripping off off the front of the cradle. After getting under the car and pulling stuff out, I noticed that most of the coolant was actually dripping off the flywheel shield at the very bottom of the tranny, and that a small amount of coolant seemed to be running down various lines and cables in order to drip onto the front of the cradle.

 

It looks as though the leak is coming from the drivers side of the car somewhere, and it also seems to stop leaking once warmed up. A little searching leads me to the o-ring between the plenum and the LIM, or possibly the lines under the throttle body. Do these seem like the most likely places to be looking? Where else should I be looking? All the intake gaskets (FelPro) have less than 3k on them since the timing job, and everything was properly torqued, so I doubt it's those.

 

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If it's not more serious, say like intake gaskets or such, i could almost bet that its probably the little coolant hoses that run to the throttle body as they are directly above the rear main seal/ bell-housing area.

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I really doubt it is the intakes, as they are practically new and I was meticulous during reassembly. I'm hoping it is something simple like the bottom of the throttle body. I'll look when it's dry outside and I can see drips coming off the car. I'm thinking I can probably just remove the air box and look around with a flashlight, and hopefully I'll see where the problem is.

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:mad:

 

So much for meticulous. It's the LIM. Saw coolant dripping off the corner of the front head clear as day, and everything else in the area is bone dry.

 

At least I've got a spare set of unused gaskets already though.

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What gaskets did you use? I used the felpro metal ones,

 

I used FelPro, but I'm not aware that they made a metal version for the 3.4TDC. I suspect that either I missed a bolt torquing the intakes on, or possibly they worked loose. I'll know more once I tear into it. Heh... at least it isn't my daily driver!

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When you bolt down the intake again, get the bolts that you are supposed to use to help align the intake.

 

I have not heard of those... do you have any info on them?

 

Also I'm thinking that the bolts might have just backed out a bit. Maybe locktite on reassembly would be a good thing.

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If you look at the intake there are two empty bores in the center of the intake that go unused. I don't have the specs on the bolts but it helps to "seat" the intake. Almost no one uses them but its good practice.

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HINT: the bolts to hold the lower intake in position ARE RIGHT IN FRONT OF YOU. they are the bolts that hold the upper intake down.

 

Wow, and I went out and got different ones.

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HINT: the bolts to hold the lower intake in position ARE RIGHT IN FRONT OF YOU. they are the bolts that hold the upper intake down.

 

Pffft... Seriously? Ok then! So I use them to temporarily hold it in place, and torque the LIM back down. And use locktite this time. I think I can do that :biggrin:

 

Thanks for the help all! :high5:

 

Now if only the weather will cooperate...

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