Doing a full tune up this weekend any tips or advise for me? - 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 01-25-2006, 01:36 PM   #1
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Default Doing a full tune up this weekend any tips or advise for me?

Going to NAPA to get all the parts.
Any tips on taking out and cleaning the T.B. and Maf?
any other things to clean out while Im in there like the EGR valve, idle air motor etc?
If someone can tell me where the EGR and idle motor are that would be great.
has anyone used seafoam as well to clean out the motor?
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Old 01-25-2006, 01:48 PM   #2
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Please put your year and model of car into your signature under your profile. We can't really tell you where things are if we don't remember which one you drive.

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Old 01-25-2006, 01:52 PM   #3
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Any tips on taking out and cleaning the T.B. and Maf?
Make sure you are extra careful when removing the screen. From TECH INFO:
Quote:
To remove the MAF screen, remove the intake pipe from the TB Plenum. Using a small jeweler'* screwdriver, gently remove the ring clip from the circumference of the screen. Now gently pry the screen from around the outer edge with a jeweler'* screwdriver, or straighten a paper clip and put a slight bend in one end, using this to pull the screen loose. Do NOT damage the screen, as you may end up needing to re-install it.
If someone can tell me where the EGR and idle motor are that would be great.
Like Bill said, let us know what year and model you have so that we can help with location of these items.
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Old 01-25-2006, 01:55 PM   #4
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1994 SSE
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Old 01-25-2006, 01:59 PM   #5
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Ok..This should be a pic of your motor.

The EGR is located to the right of the front valve cover.
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There is a bracket under the TB that has to come off and so does a third bolt. A universal socket (swivel part of socket) I think it'* 10mm or 13mm works wonders. I ripped one off in record time after a couple members said it was a pain in the buns.
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Old 01-25-2006, 02:24 PM   #6
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Cleaning MAF sensor:
Pull the sensor off, clean gently with Q-tip and alcohol. Remember, if you hurt one of those coils it'* about $100+
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Old 01-25-2006, 02:34 PM   #7
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Cleaning Throttle Body:

Quote:
Originally Posted by Mortehl
Items needed:
1) Couple of Clean Rags
2) Toothbrush
3) Throttlebody cleaner (sometimes referred to as intake cleaner)
4) Ratchet with the appropriate heads
5) New throttlebody gasket.
6) An empty container to catch coolant
7) Some vacume line or other tubing to suck coolant.
A good phillips head screwdriver.

Recommended Tools:
1) Flex-head sockets for your ratchet. As I leaarned at NEBF, this will save you much pain when getting the bolts out.
2) Pin head pliers for removing the MAF screen

Steps:
1) Remove your radiator access cover (Its that cap right on top of the radator
2) Use your tubing and suck about half a gallon or so of coolant out of your system. (This is to avoid a mess later)
3) Remove your air intake from the throttle body.
4) Disconnect all cables from the MAF, TPS, and that other sensor (Name slips my mind atm)
5) Remove the 4 bolts and screw (Number and alignment might be different on your car)
6) Gently slide the throttle body away from the engine. Be prepared for some coolant to splash.
7) Set the throttle body aside and remove the TB gasket from the engine. Replace with a new gasket.
Very gently and remove the 3 sensors from the throttle body. You don't want that cleaner destroying a $30-100 sensor. (Note the alignment of the TPS arm for later)
9) Remove the MAF screen using the pin head pliers if you have it. Be very careful removing the screen as it is easily damaged. (NOTE: Some people have permanently removed thier MAF screen and have had great luck, while some haven't. I personally decided to leave mine in. Search the boards for more information on this and make your own choice there).
10) Whip out your toothbrush and rags and throttle body cleaner and go to town. The throttle body innards should have a machined finish after you're done.

11) If you decide to keep your MAF screen, reinstall it now.
12) Install the TPS. Be sure the TPS arm is aligned the same way it was when you removed it.
13) Install the MAF and the other sensor on the TB.
14) Reinstall the Throttle body back on the engine by using the alignment screw and reinstalling the bolts you removed earlier.
15) reattach your intake.
16) Plug your sensors back in. (Don't be an idjit like me and forget this part )
17) Load your coolant back into the system, making sure that the fill line is back where it belongs.

Have fun. (Much thanks to Bill and Randy, I learned this from them.)
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