Tune up - 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 09-10-2002, 09:11 PM   #1
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Default Tune up

I know a lot of topics cover little bits and pieces of this but I'm looking for the big picture. After my little exhaust incident, I have decided to do a full tune up myself to help keep from blowing out the new exhaust I am going to put on it. Never actually done a tune up on my own car before (bevieve it or not) so anyhelp from you seasoned veterans is appriciated. :pimp:

Here is what I know (or think I know). A tunup consits of new spark plugs and or wires (if needed), checking fluids, reseting the PCM either with a code scanner or by disconnecting the battery for some time, and a the basic check of fluids and changing of fluids as needed.

Here are the parts I am looking at getting. Any feedback on these (good or bad) is appreciated.

Plugs:
I was thinking the Iridium IX but I am not sure if it will get me more bang for the buck over the V-Power.
http://www.grandprixstore.com/Mercha...oduct_Code=337

Wires:
These wires are 8mm and for a series II but I think they should fit ok on my sereis I SC.
http://www.grandprixstore.com/Mercha...oduct_Code=339

Thermostat:
My ride likes to run warm on hotter days plus a cooler engine over stock ins't a bad thing.
http://www.grandprixstore.com/Mercha...oduct_Code=205

If I missed anything please let me know. Thanx in advance for all your infinate wisdom!
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Old 09-10-2002, 11:11 PM   #2
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Hey Gord, don't forget about the belts, and hoses.
Seems they get overlooked too often till either a belt goes or a hose blows.
Either way, small price to pay to change them and know that they are ok.

SSE1990 says, SSEi95 should stop doing that or he will go blind!

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Old 09-11-2002, 09:03 AM   #3
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When I did my last full tune-up about 2 years / 55,000 miles ago (within the first week after I bought the car), I did the following that Saturday:

Saturday Morning:
AC-Delco Rapidfire Plugs
AC-Delco Stock Wires
AC-Delco Oxygen Sensor
AC-Delco PCV Valve
Installed my K&N for the first time (Pre-Oiled)

Saturday Afternoon:
Took to Valvoline and had Oil Changed, Coolant Flushed, Tranny Fluid Changed

Later that night I washed down the entire engine bay


Since then I've changed the coolant almost 5 times (twice a year is normal), but it got changed somewhat when my Water Pump went last summer, and somewhat changed again this summer when I put the 180 thermo in, etc..
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Old 09-11-2002, 09:17 AM   #4
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Hey, Chris, how come you change your coolant twice a year? I can understand more is better up to a point, but GEEEZ, you're gonna kill some neighborhood cats with your drippin'* twice a year.

Anybody have anything good or bad to say about Bosch O2 sensors? I hate their plugs, but I just bought one of their 02'*, going to install it this weekend.....unless somebody sez to ditch it.
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Old 09-11-2002, 09:20 AM   #5
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Quote:
Originally Posted by willwren
Hey, Chris, how come you change your coolant twice a year? I can understand more is better up to a point, but GEEEZ, you're gonna kill some neighborhood cats with your drippin'* twice a year.

Anybody have anything good or bad to say about Bosch O2 sensors? I hate their plugs, but I just bought one of their 02'*, going to install it this weekend.....unless somebody sez to ditch it.
I have had my Bosch O2 Sensor now for about 6 months....no problems yet.
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Old 09-11-2002, 10:20 AM   #6
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SSEi95, I have a '95 series I SC engine as well and I just did my wires last Sunday. I ordered the exact same wires you are looking at (in blue) and they work very well. I have no complaints what-so-ever. Performance is 200 times better than my old ones (but they were cooked beyond toast with 90,000 miles on them), and they really dress up the engine bay. I did my plugs about a month ago and the combination has been outstanding. (I used Champion Platinums with a three year unlimited mileage warrentee. Some people on this site have warned against using Champions, time will tell. I did try Bosch Platinums and they only lasted three months.)

Other wires that will work well if you want to spend the money are Accel 8.8 mm competition wires or Taylor 10.5 mm racing wires, but these will not fit in your stock wire retainers. Taylor makes retainers and protective tubing for their wires as well as heat socks for your boots.

BTW: the plastic corrigated tubing that is on your current wires comes off very easily and can be washed and reused on your new Taylor 8 mm plugs. You should use them because they protect your wires from the heat generated under the SC snout (where you have to route the #'* 2, 4, and 6 wires. Also reuse your metal heat shields for the back wires (2, 4, and 6). They fit right over your new plug wire boots. Keep in mind that those wires are surrounded by that very hot exhaust manifold or header!

Good luck with your tune-up!
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Old 09-16-2002, 06:19 PM   #7
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I just got all my stuff in the mail today. I should have time in the next couple days to put everything in. I will let everyone know how it all goes and how much more performance I get out of the car!
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Old 09-17-2002, 09:04 AM   #8
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FYI - I just changed my 02 sensor this weekend. My idle dropped by 100-200 RPM'*.
Used Bosch.

Methinks I was runnin' a bit rich.
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Old 09-17-2002, 09:14 AM   #9
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Quote:
Originally Posted by willwren
FYI - I just changed my 02 sensor this weekend. My idle dropped by 100-200 RPM'*.
Used Bosch.

Methinks I was runnin' a bit rich.
I have been thinking about doing that too. Since I recently blew out my cat and have a slightly higher than normal idle, I have been thinking I am running a little rich as well. Do our cars have 1 or 2 O2 sensors and how much do they usually cost?
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Old 09-17-2002, 09:18 AM   #10
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Funny. I blew out my Cat in May. My '93 only uses 1 02 sensor, and don't quote me, but I'm pretty sure yours uses 2, being OBDII compliant. I know some of the newer Bonnevilles use a sensor with a pre-heater....Series2? Deathrat? The Bosch I used had the OEM plug and cost me $20. That'll pay off pretty quick if I was running rich, cosidering what hi-octane fuel prices are!
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