Ok guys, yesterday I tried some things. I got to the filter/maf by taking out the front headlight (much easier then trying to take the wheel and splash guard off again). Anyway I cleaned the MAF with CRC Electrical cleaner, cleaned the k&n filter and lightly reoiled, and checked all of my connections. I didn't notice any type of oil on the maf, but I sprayed it some anyway just in case with the CRC. The filter also didn't look so bad, but I cleaned and reoiled that too. The connection between the intake and the throttle body which connects to the supercharger wasn't very good. So I secured that connection, by getting the end of the intake just inside the lip of the throttle body, and better secured the rubber boot around both. My car was bogging down at the begining of each gear, but now it is smooth and strong (I think it had to do with the intake/throttle body connection).

Unfortunately, the CEL remains. I have driven near 100 miles, and it has not gone away, nor do I expect it to. So everyone can pretty much forget the "clean your maf" fix for this, and the "clean and re-oil" the k&n fix as well. I am now 100% convinced that this is a computer issue. Although I'm still upset the cel is on, atleast I have the piece of mind that:

1. The maf is 'clean'.
2. The filter is not over oiled.
3. My connections are perfect.

We have 1 more week until sema (nov. 1-4). Lets hope GM will have a release date, that involves 2005, rather then 2006.

THE STAGE UPGRADES ARE DONE GM FRIGGIN RELEASE THEM.

-maverick

 

the intakes and exhaust should be released in spring, not sure about the staged upgrades

 

The stage upgrades are the most interesting imo are the stage upgrades, because:

1. They will hopefully open this engine up, and free it of these annoying cels.
2. They will yield the most hp per $.

I just hope they are released soon, as I fear I'll have a cel staring me in the face until then.

 

All its doing is throwing a lean code. Because its getting more air than the factory set. Its not that big of a deal, just get some bigger injectors.

 

or I could just wait for gm to release the stage upgrades. Yannow, instead of guessing. I had a c++ class in college, why don't I just write my own pcm program?

 

Well the point is the parameters are too narrow and it should be self adjusting.

I threw 2 lean codes with a stock filter also.

 

lol good luck

You can buy plug and play units and just ditch the GM pcm all together.

 

FYI There will be no doc ID available for that update (Improve Cold Start Idle Quaility and Scan Tool Functionality- CVN#000067E6)
That update was actually released a while back for the 2005s and there even has been another release since (CVN#00002158- diagnostic enhancements for DTCs P0128 and P0603). AFAIK there is no SI/PI "paper" on these recals.

So you would have to book the car in for an MIL or drivability symptom in order for them to even look for an update in TIS. By my count there has been 3 updates for the 2005 Cobalt SS/SC.There has been no updates to the 2006 calibration as of yet.

Often the "details" of a recal is only summarized in TIS, so there IS a potential that a reflash might alter the enable/fail criteria for almost ANY DTC- so it's worth a try (in the case of the P0171) IMO. Real problem will be convincing them to do the reflash to repair a drivability problem for a car with a CAI under warranty. My advice would be to be willing to even PAY for the reflash, to make sure it gets done. (once they see that the available reflashes doctor a number of "issues" they will likely put it through as a warranty claim- easier and wont bite them in the ass if you decide to escalate the claim)

The basic expectation is:
If GM released an "emission-related" calibration update for the Cobalt, this reprogramming event should be covered for 8 years/80,000 miles (130,000 km).
However If GM released the recal as a "driveability-related" update (for example, to eliminate a hesitation) this reprogramming event would be covered for 3 years/36,000 miles (60,000 km)- after that it's customer pay!

If they do a reflash, dont forget to tell them to record your exisiting Oil Life Index prior to the reflash so it can be manually entered with the TECH2 afterwards (it gets "wiped" during a reflash) otherwise you will have to get them to replace the oil 3000 miles (5000km) from the mileage recorded since your last change.

JMO
HTH
WOT

 

Good info, thank you!

 

Actually there IS a GM site where you can check your own calibration IDs and compare them to what shows up on a scan tool.

http://calid.gm.com
-Put your VIN in there
-Select PCM/VCM as controller type
-Select "Normal" Programming type
NEXT>

It can take a while but this will eventually show you the calibration history. The first number in the "tree" would usually be the production calibration and any additional part numbers shown are "updates". If a bulletin is involved it will usually list the TSB number.
Typically the techncian can only reflash you with the LATEST calibration (furthest down the tree)
The summary screens can then be printed out and taken into the dealership as assistance in getting the updates.
Good Luck
WopOnTour

 

Awesome resource, thanks again!

 

I was trying to look more into this, but been out of work for the past week. Did call and have a freind look in SI and he could not find any bulletins/PI's. I know they did exist at some point. I did not have him check into TIS though, but its good to know about the latest updates. Because of the reason that some parameters not listed may be effected I suggested the reflash, it may/maynot help. Just thought it was something to look into.

 

Thanx WopOnTour!!!

 

WopOnTour - For some reason I can't get this to work on my computer. I have Broadband and You did say it could take a while but I left it for about a half hour and it was still going.
Could you halp a brotha out on this one ? -NightmareSS-

 

I just tried it again to see if it was still up. It worked fine for me.

Did you enter your VIN in correctly?

 

Yeppers. Just tried it again and same thing.

 

I dunno, it might need Java or something, or are you using Mozilla /Firefox maybe??
WOT

 

Well I just removed my MAF sensor and gave it a liberal shot of CRC a couple times. Let it dry and shot it again. I reinstalled the MAF, I will let everyone know if I get a CEL again. I have been getting them 2-3 times a day all P0171.

 

popup blockers will screw with it.

Thanx for the site WOP. It definetly helps if you have some info when you go to the dealer otherwise they can just say oh there is no update your crazy.

 

2-3 times a day? wow.

Exhondaman has the AEM prototype and has never had a CEL with it. Even before the psi-fi kit.

 

My car has these updates for the OS so far:


New calibration with diagnostic enhancements for DTCs P0128 and P0603.
New calibration to improve cold start idle quality and scan tool functionality
New calibration to ensure proper module communication.
Operating System software

What is the p0128 and p0603 code?


By the way i'm using FireFox and the website works fine and fast. Results in 30sec. Awesome website

 

P0128 Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature ECM
P0603 Control Module Long Term Memory Reset ECM

 

Thanks MarcS... Will the latest software be the same software that the Stage Upgrade comes with or would it be different than an SS without the Stage Upgrade?

 

Thats what I was figuring. I disabled all my pop up blockers but for somerason it kept blocking it. I don't know. Marc helped me out though on this one. Thanks Again Marc !

 

does anyknow if k&n are making any comments about the possible causes or any attempts to suggest what to do, sorry for the redirect