Intake Problem! - 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 02-05-2004, 12:50 PM   #1
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Default Intake Problem!

How would I know ifI were prone to the upper intake problem? I have a 94 SE
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Old 02-05-2004, 12:57 PM   #2
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The intake problem only happens to the Series II NA engine from 95 - present. You may have a plastic intake, but there is no major concern for you.
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Old 02-05-2004, 01:06 PM   #3
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Default Intake problem

You have a series I engine and the series II was known for a specific type of intake failure. However, I have a 94 SE and mine developed some leaks around the intake manifold gaskets. I noticed little pools of coolant on the outside of the intake manifold as well as a slight loss of coolant from the resevoir. It wasn't major but I replaced the gaskets anyway. In your case, just be aware of coolant level in your resevoir.
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Old 02-05-2004, 01:08 PM   #4
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And go with a 180 thermostat. It will keep everything much cooler. Just in case....
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Old 02-05-2004, 01:52 PM   #5
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Quote:
Originally Posted by Sol
The intake problem only happens to the Series II NA engine from 95 - present. You may have a plastic intake, but there is no major concern for you.
Sorry I'll have to dissagree with you, my 94'* intake went at 136k , my mom owned the car at the time and had to have a newer engine put in. The series I engines intake fail too. Happened to my car
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Old 02-05-2004, 02:02 PM   #6
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Ok these are the problems I am having:

It all started after I replaced my t-Stat with a 180 degree t-Stat

I began to loose coolant and have a coolant smell inside my car...traced it down to the t-stat housing was not tight coolant leaked but burned as soon as it hit the hot motor..ok problem solved???


Main thing since the t-stat change..at idling the temps go beyond the 200 degree mark looks like 230-250. When i drive it cools back down.

I have been keeping and eye on coolant and I have not lost any since I tightened down the t-stat housing!

thanks
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Old 02-05-2004, 02:07 PM   #7
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Quote:
Originally Posted by 95neongirl
Ok these are the problems I am having:

It all started after I replaced my t-Stat with a 180 degree t-Stat

I began to loose coolant and have a coolant smell inside my car...traced it down to the t-stat housing was not tight coolant leaked but burned as soon as it hit the hot motor..ok problem solved???


Main thing since the t-stat change..at idling the temps go beyond the 200 degree mark looks like 230-250. When i drive it cools back down.

I have been keeping and eye on coolant and I have not lost any since I tightened down the t-stat housing!

thanks
After I put in my 180 t-stat I had to wire my fans to come on when I turn on the car , now its no higher than 190
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Old 02-05-2004, 02:19 PM   #8
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mine was out at 100k....there are still occurances with series 1!
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Old 02-05-2004, 02:30 PM   #9
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Much more frequent with the Series II.


NeonGirl, is there a chance something else could have gone wrong during the t-stat install? Maybe it'* not opening up very well.
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Old 02-05-2004, 03:22 PM   #10
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When the series 1 intake goes (and it'* rare), it'll be on the passenger end, where the coolant bypass hose enters. There'* a plastic fitting that breaks on the hose where it enters the intake, but sometimes it can damage the intake itself at this location, too.

It'* plastic, so it'* possible to damage if it gets too hot, nonetheless. The 180 stat should help.

I'm betting your thermostat isn't opening fully, or is partially restricted. Is the rubber o-ring installed right? The paper gasket? You may want to buy a higher quality tstat and swap it out again.
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