I have a 1999 F150 with the 4.2L V6.

There is a steel tube that comes off the top of the water pump which splits into a "Y". A hose fits on the right side (looking from the front) of the "Y" The other end of this hose fits over a steel tube which goes into the intake manifold. This tube is broken near the base and is leaking coolant. This tube is "fitted" into the intake manifold.

Can this tube be replaced? Or am I going to have to buy a replacement intake manifold?

 

The pipe can be replaced. It's about $20 from the dealer.

 

I just called a dealer. They said it was part of the manifold and could not be replaced??
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OOPS! Called another dealer. They've got it -- part # 8555 $13.

Thanks, Smaug -- if it hadn't been for your reply, I probably would've taken the first dealers word for it.

 

[quote author=beatNurAss link=topic=57850.msg430693#msg430693 date=1131430920]
That sounds like the same thing that comes on stock intakes on the 5.0 mustangs. Everyone that I know just caps them off. The coolant goes through the intake just to warm it up faster. If thats what it is bypass it on both sides of the intake
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I've been out of town and still haven't fixed this. I got the above answer on another website.

Is this right? Would I do just as well to bypass this passage through the intake manifold?

 

Should work, it does just go thru the intake.

 

You can bypass the coolant route thru the intake.
The info/description you received is correct.

 

Where does this passage exit the manifold?

Also, I notice the coolant temperature sending unit is on the intake manifold. If I bypass this passage, will it bypass the sending unit and prevent my coolant temperature gauge from working?

BTW I live in Houston,TX, but I was near your stomping grounds last week, BrianA. I was working in Decatur, AL and visited family in Jasper, AL.

 

I decide to go ahead and remove the intake plenum so that I can replace this tube.


But now I can't get the upper intake plenum off. Help! See thread below:
https://www.ford-trucks.com/forums/s...95#post3124195

 

The water goes into the manifold thru this tube. Where does it come out? Do I have to plug the outlet from the manifold? Or just plug the hole where this tube goes into the manifold and plug the tube that comes from the water pump.

 

ive got the same problem on my 4.6 ltr, the tube runs under the intake and into the water pump and the only way at it is to remove the intake 35.00 for the gasket, and alot screaming under the good of my 98 f150