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.

Estimate usage out of a Intake

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Old Feb 23, 2004 | 02:56 PM
  #11  
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They are. The new intakes should be factory installed on the 99'*.

If you have any doubt about whether you have the new or old intake, look at the casting marks on the top of yours.
When did GM start using the "new" intakes?

My casting date is 1/12/99. 75,000 miles and no signs of coolant loss, but I get nervous everytime we take it more than 50 miles from the house!
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Old Feb 23, 2004 | 03:24 PM
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I'm not sure there'* any way to outwardly identify it. Check the sticky post. It'll show you the differences around the EGR port. It'* easy to get to.

Might rest your mind a bit, too And let us know what you find.
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Old Feb 25, 2004 | 05:47 AM
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if you wanna test your nerves, try driving my car - original upper intake (circa 95, if i remember correctly), and *occasionally* looses coolant, but never in any sort of constant pattern. mostly on longer trips, but only sometimes. i think i may actually have a small leak in my heater bypass (assuming we have one of those - man i really need to start getting to know this car) (of course, i promised the wife that i was going to try *not* to do that with this car)... but every now and then you loose a good centimeter or more of coolant...

matt
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Old Feb 25, 2004 | 09:56 AM
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my girlfriends has 102,xxx on her factory series 2 intake. we do still have unknown red fluid leak somewhere that we still can find.
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Old Feb 26, 2004 | 09:17 AM
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Originally Posted by jr's3800
Originally Posted by mkaake
if you wanna test your nerves, try driving my car - original upper intake (circa 95, if i remember correctly), and *occasionally* looses coolant, but never in any sort of constant pattern. mostly on longer trips, but only sometimes. i think i may actually have a small leak in my heater bypass (assuming we have one of those - man i really need to start getting to know this car) (of course, i promised the wife that i was going to try *not* to do that with this car)... but every now and then you loose a good centimeter or more of coolant...

matt
I don't know where that leak may be... But I want you to be worried about it... If you loose a centimeter in less than a week it may be a sign... Could also be a water pump too... But be very watchful for any sudden coolant loss...
oh don't worry - i am! i really want this car to last to 300k - the coolant gets checked after every long trip (45 mins +) and at least twice a week. when it warms up a bit, i'm gonna go visit jon (theJMFC, aka brother in law) and look around for the leak. the way it'* acting, i initally thought it was upper intake, but as time goes on, i really think i just may have a hose issue. although i'm prolly still gonna have the wife set aside money to buy an intake just so i'll have one on hand for when it does eventually go...

matt
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Old Mar 2, 2004 | 07:27 PM
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Default Re: Estimate usage out of a Intake

Originally Posted by Twister97
Is there a better aftermarket manifold I can purchase somewhere?
Well as of TODAY I now offer both the cheaper Intake Repair Kit AND the New Dorman Upper Plenum now!
Intake Repair Kit
Dorman Upper Plenum
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