1996 Bonneville SSEi with no coolant - Newby question - 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 05-13-2010, 10:54 PM   #11
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The most common place for a supercharged engine to leak coolant is the coolant elbow under the snout of the supercharger. You will see a black plastic elbow going from the lower intake to the tensioner bracket. Can you see if it'* wet?
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Old 05-13-2010, 11:09 PM   #12
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Quote:
Originally Posted by Danthurs View Post
The most common place for a supercharged engine to leak coolant is the coolant elbow under the snout of the supercharger. You will see a black plastic elbow going from the lower intake to the tensioner bracket. Can you see if it'* wet?
This area?

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It doesn't seem any wetter than any other part of the engine.
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Old 05-13-2010, 11:16 PM   #13
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Yea the black elbow in the center of the pic is the one Dan was referencing
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Old 05-13-2010, 11:17 PM   #14
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Yep, that'* it. Coolant has to go somewhere. Your oil is clean so it'* not getting in to the engine. The exhaust does not smell sweet so it'* not being burned. So I'm thinking the LIM gaskets are fine. A supercharged engine wont leak threw the EGR. Are you finding any spots on the ground under the car when it'* been parked? The places it can leak are some what limited. Heater hoses, radiator hoses, coolant elbows. There are two of them. Another further back from the one you pictured. Leaking radiator or radiator cap. Freeze plugs, throttle body gasket, LIM gasket, and O-rings between the LIM and supercharger.
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Old 05-13-2010, 11:23 PM   #15
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Yep, that'* it. Coolant has to go somewhere. Your oil is clean so it'* not getting in to the engine. The exhaust does not smell sweet so it'* not being burned. So I'm thinking the LIM gaskets are fine. A supercharged engine wont leak threw the EGR. Are you finding any spots on the ground under the car when it'* been parked? The places it can leak are some what limited. Heater hoses, radiator hoses, coolant elbows. There are two of them. Another further back from the one you pictured. Leaking radiator or radiator cap. Freeze plugs, throttle body gasket, LIM gasket, and O-rings between the LIM and supercharger.
I have noticed that it'* been leaking. Actually, when I changed my oil I noticed the bottom of the engine was very dirty, but the leaking looks more like oil, not coolant. I just went out and looked where I park, and there are spots where it has leaked. These are also dark.

I'll check out those other places you suggested. The throttle body gasket is definitely hosed, so I'll get a new one.

Thanks everybody for all the help. I greatly appreciate it.
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Old 05-13-2010, 11:31 PM   #16
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Is it dripping at the front, rear or passenger side?
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Old 05-13-2010, 11:35 PM   #17
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Front right, mainly. As I went out to check some things, I noticed that there is a red liquid dripping from the front right passenger side. It'* collecting right at the bumper and dropping from there. I'll take a picture. This is getting better and better.

I know the coolant isn't red. Transmission fluid is red, isn't it?
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Old 05-13-2010, 11:38 PM   #18
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The trans cooler lines connect in that area. Your radiator might be leaking. Check the trans fluid just to make sure the coolant isn't going there. I've never seen this happen, but it'* worth a look.
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Old 05-13-2010, 11:55 PM   #19
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Pictures on the way. This is ugly. I know I'm not wonderful at these things, but this is incredible.
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Old 05-14-2010, 12:21 AM   #20
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I'm embarrassed, but these are the pictures of the undercarriage. I'm pretty sure I've got a few problems to take care of.

I'm not sure it can be seen very well, but there'* coolant drops all over the center piece, where the bolt is and around it.

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