The GTS
04-05-2019, 10:14 PM
#46
Rennlist Member
The 1990 Airbag system had a main controller that had an integral wiring loom made into it. (928 618 217 00)
The 1991 Airbag system was changed to a main controller (944 618 217 02) which had a separate wiring loom.
The 1990 Airbag system was notoriously weak, with Airbag faults pretty common. I personally repaired a few cars where these 1990 systems have "gone off" and exploded one of the airbags randomly...not a good thing. The 1991 system has proven to be very reliable and mostly trouble free. The 1990 system was not available as a replacement part and superceeded to the 1991 system, of which I have purchased several systems to repair 1990 model cars, over the years. The superceeded pieces had a retail price of ~$6000.00, from Porsche, many years ago.
If I personally owned a 1990 car with the early airbag system still inside, I would change it or disable it.
The 1991 Airbag system was changed to a main controller (944 618 217 02) which had a separate wiring loom.
The 1990 Airbag system was notoriously weak, with Airbag faults pretty common. I personally repaired a few cars where these 1990 systems have "gone off" and exploded one of the airbags randomly...not a good thing. The 1991 system has proven to be very reliable and mostly trouble free. The 1990 system was not available as a replacement part and superceeded to the 1991 system, of which I have purchased several systems to repair 1990 model cars, over the years. The superceeded pieces had a retail price of ~$6000.00, from Porsche, many years ago.
If I personally owned a 1990 car with the early airbag system still inside, I would change it or disable it.
You nailed it! Thank you for your excellent summation!
The main reason my 90 GT became an outlaw was: The passenger airbag went off while I was driving the car without any provocation!
I was driving home from droomans shop and I called him because the airbag light came on erratically. We decided that I would bring the car to him the next day. After ending the call BOOM! the passenger side bag went off and shattered the dashboard and windshield. I was in heavy Florida traffic and after the shock of the explosion the cabin was filled with acrid smoke! Windows down immediately, multiple expletives and the bizarre realization of what had happened!
After a bit of thought regarding the fact that my insurance company would either not pay for a mechanical issue of this nature and that the car would also likely be totaled or branded, I decided to just keep driving the car home...
The rest is history and I am really happy that I decided to go the lightweight route with this particular car. It is a blast to drive!
The Carbon Fiber dashboard turned out to be fantastically beautiful and is unique.
And now, I do not have to worry about those damn 1990 airbags!
Regards,
Dave
The only thing I do not like about the Carbon Fiber dash is the occasional glare off of its gloss surface...
Thanks again Greg for providing excellence in 928 maintenance and support!
Last edited by 928 GT R; 04-10-2019 at 03:11 AM.
04-06-2019, 12:59 PM
#47
Rennlist Member
I would like an honest answer. Other than some sheet metal work, sport mirrors, and a larger engine that has a bad reputation for bad rods, and drinking oil. What makes the GTS, a better car than my S4? My 89 is supercharged, and some other mods, and is very fast out on the highway.
The GTS is more plush, luxurious and eats miles and miles and miles for breakfast. I drove my car to OCIC Wichita, KA in 2012, 6000 km round trip, never missed a beat. I believe we had a beer together at the event Joe which I hope we repeat sometime soon.
04-06-2019, 01:45 PM
#48
Vegas, Baby!
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Thread Starter
Like some others I have both so an make a direct comparo; both cars are Grand Tourers where the S4 does feel somewhat sportier, a little lighter and agile.
The GTS is more plush, luxurious and eats miles and miles and miles for breakfast. I drove my car to OCIC Wichita, KA in 2012, 6000 km round trip, never missed a beat. I believe we had a beer together at the event Joe which I hope we repeat sometime soon.
The GTS is more plush, luxurious and eats miles and miles and miles for breakfast. I drove my car to OCIC Wichita, KA in 2012, 6000 km round trip, never missed a beat. I believe we had a beer together at the event Joe which I hope we repeat sometime soon.
Malcolm, You were drinking beer, I was drinking bourbon. Yeah buddy, we need to replay that scene again!! Hope y'all are coming to 3rd coast, I can't get a passport, and Canada, thinks I'm an undesirable. There will come a day where that will change.
04-06-2019, 02:23 PM
#49
Rennlist Member
Oh Oh! Can't get a Passport Joe? There's a backstory on that one!
04-06-2019, 04:29 PM
#50
Addict
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04-06-2019, 04:30 PM
#51
Vegas, Baby!
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Thread Starter
Worth a 1000 words
04-06-2019, 05:06 PM
#53
Vegas, Baby!
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Canada, isn't alone, there are more than a few countries that won't let us visit, even one at a time. I'm considered a person of interest by the U.S. Government. I used to have a passport, but the Government won't issue a new passport, cuz I refuse to cooperate in an investigation. They can't accept the fact that I don't know anything, and if I did, I wouldn't tell them.
Actually I believe there's nothing stopping me from leaving, I just won't be allowed to return. Unless I bow down and give them what they want. Or something like that. If it was just an individual that I was dealing with I could eliminate the problem. My problem is the system, I can't get due process. Believe me I've tried everything, the courts just ignore me and never respond. It's always back to square one.
04-06-2019, 05:15 PM
#54
Rennlist Member
Oh no! Now I'm on a list for talking to you in this forum!
Run Forrest, Run!!!
I'm not even a "wanna be" bad ***... Nomads? That's the real thing!
Run Forrest, Run!!!
I'm not even a "wanna be" bad ***... Nomads? That's the real thing!
04-06-2019, 05:27 PM
#55
Vegas, Baby!
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There are a lot of people on this forum that have been around me more than once. Other than being an Angel, I'm just like everyone else here, no better, no worse. Some of and I'll say more than any other group, the best people I've ever met own this silly car! I'm blessed to have it and know some of y'all.
I'm just a little different, that's all.
04-06-2019, 05:35 PM
#56
Rennlist Member
Daphne and I like 3rd Coast so much we bought Jims S4 which we leave with our good friend in DFW area for caretaking, absolutely we are there.......in some respects cant wait.
take care buddy, be rockin' with ya soon enough.
To get back to your original question; Id have the 5 speed in the S4 or GT and the auto box in the GTS although given the values of 5 speed GTS's Im sure glad we bought when we did.....vroom!!!
04-06-2019, 09:16 PM
#57
And...overnight the value of the 1990 Porsche 928 fell through the floor with owners dumping them at crazy discounts. Owners were seen pushing their 1990 928s into lakes and rivers and tearing up the title as to not be dragged down with their plummeting values 
LOL.
LOL.The 1990 Airbag system had a main controller that had an integral wiring loom made into it. (928 618 217 00)
The 1991 Airbag system was changed to a main controller (944 618 217 02) which had a separate wiring loom.
The 1990 Airbag system was notoriously weak, with Airbag faults pretty common. I personally repaired a few cars where these 1990 systems have "gone off" and exploded one of the airbags randomly...not a good thing. The 1991 system has proven to be very reliable and mostly trouble free. The 1990 system was not available as a replacement part and superceeded to the 1991 system, of which I have purchased several systems to repair 1990 model cars, over the years. The superceeded pieces had a retail price of ~$6000.00, from Porsche, many years ago.
If I personally owned a 1990 car with the early airbag system still inside, I would change it or disable it.
The 1990 PSD systems had "Gylon" discs, which wore fairly quickly....most of the 1990 PSD limited slips that have not been "updated" have long since quit doing their job (they are worn out.) When the discs wear, the abrasive material ends up in the gear oil and can be very destructive to both pinion bearings and differential bearings. The discs were changed to a "Valeo" disc, made from a different material in 1991 (or late in 1990...I'm not positive.) When the original 1990 discs get replaced, the engaging lever for the PSD unit must also be replaced.
The 1991 Airbag system was changed to a main controller (944 618 217 02) which had a separate wiring loom.
The 1990 Airbag system was notoriously weak, with Airbag faults pretty common. I personally repaired a few cars where these 1990 systems have "gone off" and exploded one of the airbags randomly...not a good thing. The 1991 system has proven to be very reliable and mostly trouble free. The 1990 system was not available as a replacement part and superceeded to the 1991 system, of which I have purchased several systems to repair 1990 model cars, over the years. The superceeded pieces had a retail price of ~$6000.00, from Porsche, many years ago.
If I personally owned a 1990 car with the early airbag system still inside, I would change it or disable it.
The 1990 PSD systems had "Gylon" discs, which wore fairly quickly....most of the 1990 PSD limited slips that have not been "updated" have long since quit doing their job (they are worn out.) When the discs wear, the abrasive material ends up in the gear oil and can be very destructive to both pinion bearings and differential bearings. The discs were changed to a "Valeo" disc, made from a different material in 1991 (or late in 1990...I'm not positive.) When the original 1990 discs get replaced, the engaging lever for the PSD unit must also be replaced.
04-08-2019, 04:18 AM
#58
Rennlist Member
[QUOTE=Tom. M;15755981]And...overnight the value of the 1990 Porsche 928 fell through the floor with owners dumping them at crazy discounts. Owners were seen pushing their 1990 928s into lakes and rivers and tearing up the title as to not be dragged down with their plummeting values LOL.[/QUOTE
I hereby volunteer to pick up, (free of charge) all the 1990 928's that people want to abandon, to protect our lakes and streams... I will even take those pesky GT versions!
LOL.[/QUOTEI hereby volunteer to pick up, (free of charge) all the 1990 928's that people want to abandon, to protect our lakes and streams... I will even take those pesky GT versions!
04-08-2019, 09:42 AM
#59
Rennlist Member
The reality is.....Porsche never got the 928 quite right......every single year has "mechanical issues".
In terms of early cars, the "which year is the best" is really simple....the 1986.5 model wins this, by a huge margin.
Some of the mechanical design problems with the GTS border on the absurd.....and it is quite a stretch to think of this car as being the "most evolved" 928, because of these mechanical "issues". All of these cars, until they are "repaired", fall behind the '89GT, in terms of mechanicals.
The GTS rear flares are very nice....and to a certain extent, "blind" people to the mechanical issues.
In terms of early cars, the "which year is the best" is really simple....the 1986.5 model wins this, by a huge margin.
Some of the mechanical design problems with the GTS border on the absurd.....and it is quite a stretch to think of this car as being the "most evolved" 928, because of these mechanical "issues". All of these cars, until they are "repaired", fall behind the '89GT, in terms of mechanicals.
The GTS rear flares are very nice....and to a certain extent, "blind" people to the mechanical issues.
It would appear by recent sales the GTS's are not holding value as well and the earlier cars in pristine condition are on the rise although I haven't seen another 5 speed sell recently.
04-09-2019, 08:45 AM
#60
Burning Brakes
ridicolous oil ingestion, AFAIK never completely fixed from porsche is the consequence of some project bugs/issues that Greg was mentioning. And oil dipstick showing the low level is only what can you see without opening the engine. I am rebuilding an engine from a 93 gts rogerbox, oil scrapers on pistons are next to be completely seized, piston pins lived without enough oil IMHO, rods have had better times, burnt oil clogged catalysts... Just cams are in healthy condition for a 90 k miles engine... I realized soon that my gts engine needs extensive cares, too.