Coolant Leak Under the Intake Manifold

[X53Jay4.8is]

Originally Posted by samer0214

Thanks you guys for the quick reply. One question I am trying to have answered is: Would there be coolant on TOP of the valley pan cover if the Y connector WAS NOT broken?

Unless I'm missing something, I'm not seeing how coolant would end up there.

What does it matter anyway. At this point you should really be considering doing a cooling system upgrade repair due to the age of the vehicle and the fact that you have leaking coolant. Don't try to fix what you think is the one leak button it all back up to find out that an another leak persists. Just take the path of peace of mind and do the cooling system maintenance. There are countless accounts of folks with the 4.8is and coolant leak problems. All of which can be solved doing the cooling system maintenance.

[samer0214]

Originally Posted by X53Jay4.8is

What does it matter anyway. At this point you should really be considering doing a cooling system upgrade repair due to the age of the vehicle and the fact that you have leaking coolant. Don't try to fix what you think is the one leak button it all back up to find out that an another leak persists. Just take the path of peace of mind and do the cooling system maintenance. There are countless accounts of folks with the 4.8is and coolant leak problems. All of which can be solved doing the cooling system maintenance.

Too late now Jay, that train has long left the station! It's all back together, but I'm dealing with a new issue of the misfire due to a Camshaft sensor error.

[bcredliner]

Could be valley pan gasket but coolant pipe leaks that are not unusual are far more likely and coolant does collect on top of the valley pan.

https://www.ecstuning.com/b-uro-part...N1sBoCqA_w_wcB

[bcredliner]

I don't consider a cooling system as something that must be totally rebuilt at some age or mileage as long as the components are checked at some reasonable frequency. While it is logical that at least hoses should have the similar lifecycles that is not the reality.

[SlickGT1]

Yup. I had the same damn hose break. I was going nuts trying to fix it. Almost took off the intake manifold and noticed the leak last min. Was a bitch to fix, wiggling the hose and clamps under the IM. But it's an easy fix.