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Old 04-14-2019, 07:06 AM   #201
Waiex191
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1999 SL2
1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

I bought this car one year ago today. Overall it has been good minus the adventure of changing the fuel filter and the collateral projects that caused. I have put about 8000 miles on it.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 07-08-2019, 10:51 PM   #202
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Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

I think I've inadvertently started polluting the "what did you do to your Saturn today" thread so I'm moving back here. Brief synopsis: car was stumbling, and I undid the IAT mod. Still stumbles, and bogs at WOT through a wide RPM range. Newish plugs, wires, Wix fuel filter, gets 30+ MPG consistently. Homework: pull the codes.

The car has a P0420, catalyst system efficiency below threshold. We have had this code since I bought it April 2018. The new code is P0303, cylinder 3 misfire.

I now have live data so can look at more stuff. I'll be driving the Saturn again as the air conditioner clutch in the $200 Buick is screeching

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 07-08-2019, 11:05 PM   #203
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Check the compression in #3 in comparison to#2 no need to do a full set. This could still be ignition or timing. I will have to dig into what all goes away when you get solid misfires, I don't think anything is dropped though.

If you can see the ignition timing see what it looks like.

That CAT is finished and may be broken up and blocking the exhaust. Can you make it go away?

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Old 07-09-2019, 06:54 AM   #204
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Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

I'll have to see how hard it is to pull the cat. If I remove it will the ECU be unhappy?

...
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'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 07-09-2019, 08:44 AM   #205
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

The 420 will be permanent unless you use an anti fouler on it. They are on eBay already drilled out. A 420 is only a light, no other action. Wagner makes a direct fit replacement cat and they are welded at the inlet end, clamps will not work.

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Old 07-09-2019, 08:55 AM   #206
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

As to the 303 the first step is to find out if it is a burned valve or an ignition issue. From an ambient temperature start let the car sit and idle until it has reached normal operating temperature and the fan cycles once. Do not touch the gas through this. The question is this: is it running smoothly on all 4 cylinders through this evolution? If the answer is yes then the cause is likely ignition. The ICM is the only thing other than a plug and/or wire that can drop a single cylinder. That "wire" also might include a cracked coil tower.

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Old 07-09-2019, 09:04 AM   #207
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Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

the 303 is almost certainly bad or dirty coils, I've had that happen on a couple different Saturns.

...
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Old 07-09-2019, 09:17 AM   #208
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

The DOHC is very good at burning #3. It happens real fast.

A coil failure usually impacts BOTH cylinders on that coil, there are exceptions.

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Old 07-09-2019, 12:57 PM   #209
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1999 SL2
1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

I'll do OldNuc's test when I get a chance. I am leaning towards coils as it comes and goes. On today's commute I didn't get any hesitation or bogging at all. I would think if I burned a valve, it would be burned.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 07-09-2019, 01:08 PM   #210
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

YES, if random then it is ignition. Keep in mind the ICM is the only component that will drop a single cylinder and they also generate random failures. If you have the coils already swap them both in and see what happens.

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Old 07-09-2019, 01:46 PM   #211
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1998 SL2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Quote:
Originally Posted by Waiex191 View Post
A few questions for the group:...

3) Has anybody removed window tint from the inside of the back window before or will that end in tears?...
I had my tint removed and they damaged the back window defroster so you might look at this youtube.

https://www.youtube.com/watch?v=xhBEEC5seEA

...
1998 SL2

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Old 07-09-2019, 01:48 PM   #212
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1999 SL2
1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Quote:
Originally Posted by focusofheart View Post
I had my tint removed and they damaged the back window defroster so you might look at this youtube.

https://www.youtube.com/watch?v=xhBEEC5seEA
My rear defroster is toast, meaning it never gets toasty. I figured it was better to be able to see 95% of the time rather than worry about the 5% the heater was there for.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 07-14-2019, 12:26 PM   #213
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Old coils.


Here are my new NGK coils. I cleaned up the ICM and the mounting pad on the gearbox.



It ran good on the short drive back home. This week I'll be driving the $200 Buick before I turn my kid loose in it. Plus it has AC.
Attached Images
File Type: jpg IMG_20190714_100045666.jpg (71.0 KB, 104 views)
File Type: jpg IMG_20190714_102821948.jpg (98.9 KB, 56 views)

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 07-14-2019, 02:45 PM   #214
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1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Those old coils are not passing the eyeball test so you probably found the problem.

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Old 07-16-2019, 09:08 AM   #215
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Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

The Buick is still leaking from the high side schraeder valve. I've parked it in the hangar so it will be cool for tonight. The SC2 was awesome on my 14 mile commute. Hardly a definitive test but I am thinking I like the new coils.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 08-03-2019, 09:44 AM   #216
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1999 SL2
1998 SC2
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Not quite a year ago I recovered my passenger side visor. I glued the fabric on. Worked good until the heat of summer. Lately it has been springing back open. Here was the original post:
http://www.saturnfans.com/forums/sho...&postcount=135

I fired up the trusty Singer and sewed it together. Not super pretty but functional!


Coils are still good. Fuel economy seems very good based on how many miles I have at a quarter tank.
Attached Images
File Type: jpg IMG_20190803_083753175.jpg (62.4 KB, 40 views)

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 08-22-2019, 04:02 PM   #217
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2001 SL1
Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Quote:
Originally Posted by Waiex191 View Post

When I solder wires I like to bend one set back on itself, so the unsoldered wire supports the joint.
Smart; I'll use that.

Quote:
Originally Posted by Waiex191 View Post

Here is shrink tubing over the joints:

And a bigger piece of shrink tube over the whole thing.
I have to laugh when I think of how many times over the years I've
  1. soldered wires,
  2. THEN addressed the location of the shrink tubing.
Yeah... that.

IMO, this phenomenon needs its own catch phrase, like perhaps "Running before planning the race," or "Doing before thinking," or "Forgetting the bullet [point]," (like how everyone knows what a Catch-22 is) but I don't think it has one yet.

I kind of like the bullet one, humorously implying shoot me in the head for forgetting the darn thing in the first place!
"I went to slide the heat shrink over the solder joint, but I'd forgotten the bullet."

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Old 08-22-2019, 06:23 PM   #218
Waiex191
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Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

Ready, fire, aim! is a good one. We've all done it!

Glad the post was helpful. The '98 is running great. I just pulled down 31.7 MPG without really trying.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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Old 09-10-2019, 07:55 PM   #219
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Default Re: 98 SC2 project. Drive for now, maybe rebuild later.

I bought this car about 17 months ago for $500. While driving home, I was accelerating WOT in third gear and 5000 RPM when I rolled my 10,000th mile. I've got about 172,600+ on it. I've been over 32 MPG the last few tanks. My SES light has been off a couple of days. Not sure if it was luck, the new coils, or the heated air intake sensor mod. I had been getting the old P0420. Overall I'm happy with my purchase.

...
Bryan Cotton
'99 SL2, 5SP bought new
Rebuilt at 204,067 September 2017
Engine, subframe, diff pin mod, brake lines, headliner, alternator, and so on!
'98 SC2, 5SP bought 2018

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