Failed Upper?!!??.. - 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 02-13-2006, 01:29 PM   #11
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No, you wouldn't necessarily have any coolant on the floor. It'* not even a normal behaviour for the LIM failure to see coolant on the ground.

Anyway, don't assume the worst. It could be only your throttle body gasket (and sounds somewhat like it, to me). Especially since you tried to take it off but couldn't. I'm wondering if maybe you didn/t damage the gasket at that time. Just a thought.
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Old 02-13-2006, 01:39 PM   #12
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Mortehl pulled his car into the garage (94 SE at the time) and I asked..what'* the green goo on the transmission. It was the TB gasket slowly leaking and quagulating on the transmission.
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Old 02-13-2006, 01:48 PM   #13
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There are a few things you want to do... Have the Lower intake manifold gaskets replaced, as well as the throttle body gasket... If the Coolant Bypass fitting has not been replaced in the past( Plastic ) have it replaced with a new metal unit and you will avoid troubles in the future

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Old 02-13-2006, 01:54 PM   #14
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Quote:
lash Posted
Especially since you tried to take it off but couldn't. I'm wondering if maybe you didn/t damage the gasket at that time. Just a thought.
yes i am guessing i could have damaged it. I was able to take everything off execpt the bolts that connect the tb to the ui?. and i did do alot of forcing.
..damn me!!!


Quote:
There are a few things you want to do... Have the Lower intake manifold gaskets replaced, as well as the throttle body gasket... If the Coolant Bypass fitting has not been replaced in the past( Plastic ) have it replaced with a new metal unit and you will avoid troubles in the future
ok i read that the UI should have the date of manufacture on the top.
I have looked for mine and could not find it. I have noticed that my ui seems to be the cleanest piece on my engine, could this mean that it has been replaced before??
i did not ask the last owner of any possible mishaps with it..

i will have to wait until tomorrow for further diagnostics as the mechanic is not intown.

yes and i have noticed that the main coolant poddles are under the TB.
as Bill suggested on his post.

thanks once again guys, u guys r bonneville guardian angels man

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Old 02-13-2006, 01:57 PM   #15
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When you cleaned the throttle body did you use intake safe cleaner?
If you used carb spray it probably took out the gaskets.
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Old 02-13-2006, 02:11 PM   #16
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Quote:
SSEBONNE4EVA Posted:
When you cleaned the throttle body did you use intake safe cleaner?
If you used carb spray it probably took out the gaskets.
....... :( i goofed that one up...
yes i did use regular carbcleaner... didnt bother to check if it was intake safe...
i will go to the store and pick up the same bottle i bough and check if it says intake safe..
baaaaaaaaaaaaaaaaaaaaah
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Old 02-13-2006, 02:37 PM   #17
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I am not sure the cleaner took out the gaskets.

The largest difference is what is being cleaned. Carb cleaner is designed for fuel deposits etc while TB cleaner is meant for airborne dirt and not fuel.
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Old 02-13-2006, 02:43 PM   #18
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Quote:
Originally Posted by 94BonnieSE
Quote:
SSEBONNE4EVA Posted:
When you cleaned the throttle body did you use intake safe cleaner?
If you used carb spray it probably took out the gaskets.
....... :( i goofed that one up...
yes i did use regular carbcleaner... didnt bother to check if it was intake safe...
i will go to the store and pick up the same bottle i bough and check if it says intake safe..
baaaaaaaaaaaaaaaaaaaaah
The most important thing is that the can says Sensor Safe.... There may still be a couple cleaners that can harn the sensors... I think most are sensor safe, as the electronic carbs used in the early to late 80'* were electronic and used an O2 sensor...

But a sensor safe and Intake as well as plate coating safe would be reccomended..

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Old 02-13-2006, 05:32 PM   #19
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Quote:
Originally Posted by 94BonnieSE
ok i read that the UI should have the date of manufacture on the top.
I have looked for mine and could not find it. I have noticed that my ui seems to be the cleanest piece on my engine, could this mean that it has been replaced before??
i did not ask the last owner of any possible mishaps with it..
Yours is a '94 and should not be affected by the normal intake failure discussed here. That issue is largely confined to the '95-99 plastic intakes, as is the date code info you read about. FYI. One good piece of news.

Also, it'* beginning to look like you do need a new TB gasket anyway, but the "good" news there is it is not an expensive part or difficult to replace. However, if you have the funds, do follow the advice above to replace the LIM gaskets and coolant elbow at the same time. It will save you more grief later on.
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