Took some pics of this, imminent uim failure? or grease? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-12-2007, 11:03 PM   #1
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Default Took some pics of this, imminent uim failure? or grease?

I was replacing all the couplings on the vacuum lines today, and after I powerwashed everything nice and clean, I noticed this hiding in the corner behind where the throttle body goes onto the UIM. Is this coolant? Or do you think some genius mechanic was trying to scare me and sprayed white grease on throttle controls to loosen them up? I was just wondering if this is what discharged coolant would look like. But with how my coolant looks... you'd think it'd be orange lol. Hopefully it'* nothing because I just bought my new flowmaster 80 crossflow lol.

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And the airbox... no relation to topic but I don't think anyone has seen my 'work of art' lol.

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Old 10-13-2007, 12:36 AM   #2
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How do your coolant and oil look?
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Old 10-13-2007, 12:37 AM   #3
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Oil - Fine... clean for the 2k mi on it.

Coolant - Quite rusty... coolant overflow not really visible but I haven't really noticed a significant change in level.
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Old 10-13-2007, 12:57 AM   #4
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i see a GM upper is this the stock one did you check the date on it .also you should look at youre lower intake gasket if they never been done

has for the white stuff that looks like white grease maybe someone did that on the TB
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Old 10-13-2007, 01:00 AM   #5
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Yeah, I believe the date stamp is original. And I've wanted to correct whatever needs correcting... which will happen at my little tune up occuring probably in december some time. O2, Spark Plugs, Maybe wires, Fuel Filter, Coolant flush, the works. Can I just replace UIM and LIM gaskets, or do I have to accompany it with a new UIM as well?
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Old 10-13-2007, 01:03 AM   #6
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i would check the lower gasket as soon as possible for a 97 my upper was still ok on my 98 but i live in a colder area so upper failure is not as bad
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Old 10-13-2007, 01:13 AM   #7
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If it looks like grease and feels like grease it probably is grease and not coolant.

I might suspect a half shaft failure.

Usually that is green in colour though.
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