is this not good? coolant in the intake. - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-09-2010, 11:52 PM   #11
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Gotta love those plastic upper intake manifolds...what the heck were they thinking????
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Old 08-09-2010, 11:55 PM   #12
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Am getting ready to replace the one on my 97 bonne soon....and, so I'm told, a lower temp thermostat will help in the long run. If anyone out there is going to do this replacement job, just be aware of the newer replacement parts...supposedly protects the EGR tube from burning things up. Parts store may try to sell you the OEM part...tell them NO!!!!!...you want the upgraded one!!!!....
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Old 08-10-2010, 07:43 AM   #13
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To make this bullet proof. Get two 1/4" NPT plugs and the right drill/tap. Then put the plugs in the lower intake at the coolant ports. If there'* no coolant to the TB, there'* no coolant to leak if the EGR section cracks.
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