'97 lesabre intake manifold leak

[kevinnate]

I have an intake manifold leak(coolant) on both sides below the throttle body on my ’97 lesabre and I have read that this is a common problem in this forum. My question is, what’s the best way to fix this and have anybody have any success?

[auto trainy]

It has been a noted problem with the upper plastic manifold,and the manifold should be removed and inspected for cracks,warping ect. and replaced with a new gasket set. I haven't read any updates for correcting the problems as to date.Good luck.

[kevinnate]

Thanks for the reply. Should I also replace the plastic upper manifold and other forums noted that the cause is from the port of the EGR in the lower manifold, should I also get the ken-co repair kit(to fix the excess heating of the upper manifold) or would the aftermarket upper manifold design better to handle the heat?

[robertdh]

Hello,

I have the same problem on a 97 LeSabre. The metal EGR in put tube is a tight fit in the upper intake manifold. There are coolant jackets surrounding the EGR input port (supposedly to keep the port from overheating and melting). The problem is that the port melts anyway over time and developes holes that allow coolant into the intake manifold. This will manifest itself in one of two ways: 1. Loss of coolant; 2. Coolant filling the engines cylinder(s), which will result in a car that will not turn over, since liquid can not be compressed like air.

Best suggestion is an aftermarket manifold. They run around $70.00. The one I got had two EGR tubes that they stressed should be used instead of the original. They were smaller in diameter than the port, which will eliminate the chance of the port melting and the problem reoccuring.

Robert

[BNaylor]

Originally Posted by robertdh

Hello,

I have the same problem on a 97 LeSabre. The metal EGR in put tube is a tight fit in the upper intake manifold. There are coolant jackets surrounding the EGR input port (supposedly to keep the port from overheating and melting). The problem is that the port melts anyway over time and developes holes that allow coolant into the intake manifold. This will manifest itself in one of two ways: 1. Loss of coolant; 2. Coolant filling the engines cylinder(s), which will result in a car that will not turn over, since liquid can not be compressed like air.

Best suggestion is an aftermarket manifold. They run around $70.00. The one I got had two EGR tubes that they stressed should be used instead of the original. They were smaller in diameter than the port, which will eliminate the chance of the port melting and the problem reoccuring.

Robert

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