99' Chevy Lumina

[Vbb199]

@Vbb199 im getting a 3 day GM SI subscription here soon, do you need anything that is potentially hard to find about the car or need bulletins or anything? Gm service manulsnandncollision stuff is all good back to 98, then campaigns, recall, PIs, etc are good back to 1980. Campaigns are treated a lot like a recall but gm really just banks in yiu never complaining or knowing about them

If you have any information on the model, or motor, i'd love to have it. I can send you my email to fwd anything you have

 

[RecklessWOT]

Wow, the Lumina has cooling issues? Really? Say it ain't so? Lol

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At least the tranny is still good.

 

[AuroraGirl]

If you have any information on the model, or motor, i'd love to have it. I can send you my email to fwd anything you have

Well i don’t think it’s something gm will let you bulk download... but once I’m in the SI systems I’ll see what it lets me do
If you had a specific procedure or part number needed i will have access to the parts diagrams that dealers get... if I was a guy I think that means I’d have an ******** right now.
If I’m understanding the biological aspect correctly.
Parts diagrams that are interactive... my gm fleet of 2 99s will appreciate the hell out of this. 77 doesn’t get so lucky. Or 80, but they are way less complicated lol

 

[AuroraGirl]

I checked a few forums. Pages are pdf downloadable. Pages are seemingly more than a single page tho so depending on how much that translates to it might be doable to get chunks of its user friendly enough

I can check a vin for warranty, recall, campaign, and PI. Info apparently time to jot my vins down lol

seems like procedures can be downloaded in full as single PDFs, so if that’s true I know what I’m filling my hard drive with

 

[Vbb199]

Wow, the Lumina has cooling issues? Really? Say it ain't so? Lol

xc_hide_links_from_guests_guests_error_hide_media

At least the tranny is still good.

Some inbred retard put stop leak in the cooling system and didnt even cycle it thru the system correctly, the clog is at the radiator, i have tracked that much down, AND it has air in the system, but i'll get all that handled

I assumw they did that because of the leak at the front timing cover.

Theres multiple blockages in the system. 1 at the heater core, 1 in the radiator.

The 3rd blockage WAS the thermostat. It got all loaded up with stop leak and quit working, that with the coolant leak = rapid overheat.....

I at least have a mediocre enough coolant flow for the time being i can drive the SOB

 

[Vbb199]

I enjoy the **** out of it, however im sure its funny when a 6 foot 5 tall guy climbs out of it like a clown car

 

[RecklessWOT]

Some inbred retard put stop leak in the cooling system and didnt even cycle it thru the system correctly, the clog is at the radiator, i have tracked that much down, AND it has air in the system, but i'll get all that handled

I assumw they did that because of the leak at the front timing cover.

Theres multiple blockages in the system. 1 at the heater core, 1 in the radiator.

The 3rd blockage WAS the thermostat. It got all loaded up with stop leak and quit working, that with the coolant leak = rapid overheat.....

I at least have a mediocre enough coolant flow for the time being i can drive the SOB

Do yourself a favor too, when you're in there playing with the cooling system flush all the dex cool out of there and convert to regular green (if you haven't already)

 

[Vbb199]

Been riding on the lumina now for a bit longer (daily), its pretty nice.
Ever since fixing the coolant leak, doing the thermostat and pump, it stays cool, runs at operating temps, AND i have heat!

So.... no complaints there.

There will never be glorious updates regarding this car, its just a daily that's very affordable to maintain and keep fueled.

Ever since i got it, i had a balljoint pop in my front driver side, it seems to be getting more noisey, so maybe this coming weekend i'll fix it.

You must be registered for see images attach

 

[Vbb199]

There never was gonna be a whole lot of information on this "build"

But since the last past, I've done a basic tune up, spark plug wires, plugs, fluids, filters. Etc.


Unlocked the ECM with HPtuners.

We made some pulls, to see what all we could do, blah blah.


As it sits now. It cruises reasonably, and gets excellent MPG, but we've adjusted shift points, torque management, and timing tables

Its currently running on a "high octane" tune, but still slightly detuned.

I have coil fade occasionally, + gas is expensive these days! Lol


As it is, as WOT, it hits 2nd around 35ish mph, and 3rd at about 75mph. And even that is shifting a little too soon at WOT pressures.
No pings, so its doing well on the current tune.
I will say, it's fairly impressive for what it is. If I think on it I'll upload a video of a pull from a stop.

I never will do much with it, but maybe later on down the road i can invest in new coils, and some 93 octane should gas go down and we can put more timing in the tables.


Also recently replaced a bad wheel bearing, but not much than that with it. I'm currently daily driving it because the burban is "under repair"

 

[AuroraGirl]

There never was gonna be a whole lot of information on this "build"

But since the last past, I've done a basic tune up, spark plug wires, plugs, fluids, filters. Etc.


Unlocked the ECM with HPtuners.

We made some pulls, to see what all we could do, blah blah.


As it sits now. It cruises reasonably, and gets excellent MPG, but we've adjusted shift points, torque management, and timing tables

Its currently running on a "high octane" tune, but still slightly detuned.

I have coil fade occasionally, + gas is expensive these days! Lol


As it is, as WOT, it hits 2nd around 35ish mph, and 3rd at about 75mph. And even that is shifting a little too soon at WOT pressures.
No pings, so its doing well on the current tune.
I will say, it's fairly impressive for what it is. If I think on it I'll upload a video of a pull from a stop.

I never will do much with it, but maybe later on down the road i can invest in new coils, and some 93 octane should gas go down and we can put more timing in the tables.


Also recently replaced a bad wheel bearing, but not much than that with it. I'm currently daily driving it because the burban is "under repair"

The lumina is 3.8 or 3.4 right? You can upgrade the coils, the L36 and those others are small potatos. The L67 coils, sold brand new and easy to procure a full set and icm cheap etc, are just better.

 

[AuroraGirl]

The lumina is 3.8 or 3.4 right? You can upgrade the coils, the L36 and those others are small potatos. The L67 coils, sold brand new and easy to procure a full set and icm cheap etc, are just better.

There is a blue or white piece of plastic visible from under neat the coil. whatever yours is, the L67 coils are the other. I think blue=l67, white=l36. Think.

 

[bucket]

The lumina is 3.8 or 3.4 right? You can upgrade the coils, the L36 and those others are small potatos. The L67 coils, sold brand new and easy to procure a full set and icm cheap etc, are just better.

It's a small port 3100. The stock coils on them are pretty dang good. I'm betting if he pulls them, one or two of them may have some small cracks in the casing.

 

[Vbb199]

The lumina is 3.8 or 3.4 right? You can upgrade the coils, the L36 and those others are small potatos. The L67 coils, sold brand new and easy to procure a full set and icm cheap etc, are just better.

3.1L motor

 

[Vbb199]

There never was gonna be a whole lot of information on this "build"

But since the last past, I've done a basic tune up, spark plug wires, plugs, fluids, filters. Etc.


Unlocked the ECM with HPtuners.

We made some pulls, to see what all we could do, blah blah.


As it sits now. It cruises reasonably, and gets excellent MPG, but we've adjusted shift points, torque management, and timing tables

Its currently running on a "high octane" tune, but still slightly detuned.

I have coil fade occasionally, + gas is expensive these days! Lol


As it is, as WOT, it hits 2nd around 35ish mph, and 3rd at about 75mph. And even that is shifting a little too soon at WOT pressures.
No pings, so its doing well on the current tune.
I will say, it's fairly impressive for what it is. If I think on it I'll upload a video of a pull from a stop.

I never will do much with it, but maybe later on down the road i can invest in new coils, and some 93 octane should gas go down and we can put more timing in the tables.


Also recently replaced a bad wheel bearing, but not much than that with it. I'm currently daily driving it because the burban is "under repair"

I failed to add, I'm currently running on 89 octane.

 

[Vbb199]

It's a small port 3100. The stock coils on them are pretty dang good. I'm betting if he pulls them, one or two of them may have some small cracks in the casing.

That's what I understood, they do well as is, my friend(s) have all said about the same thing, the stock coils are pretty efficient as they are.

They have some small little 4 and 6 banger chevrolet gas sippers they've tuned on stock coils. 90's and early 2000's models stuff.


I have this issue I assume to be coil fade, where sometimes on HOT days, or alot of driving, I'll have a total loss of power under losd, and I have to throw it in neutral, key off, key back on, and it'll run right again.

It's occasional, but not very bad. I assume its the coils doing it.

Thats why we didn't push the envelope on total timing, I suspect what happens is, the coil drops in output a little, it pings, the KS sees it, it begins retarding timing, and then it just progressively gets worse and worse until I restart the ecm


We've yet to capture it on the live data on the laptop during a pull.

I have a little Bluetooth ELM327 plug for the OBD port, and an app on my phone, so I can monitor basic things like map, maf, load, spark advance, mpg, rpms, etc.


But I again, haven't captured that happening on anything I own, so I dunno for sure if it's coils fading. Probably is.

The egr and evap system is turned off.

Motor makes healthy vacuum, somewhere around 25-26 in/hg