Everett Ogilvie

...going out to check mine right now...

outnumbered

Ditto

allanlaw

A friend of mine was losing power at WOT at the track last week. He took it to the dealer and there were no codes nor any other explanation as to what was happening (only at WOT). We thought maybe bad gas. Anyway, he checks his air bridge this afternoon AND HIS LOWER STICKER WAS PARTIALLY ATTACHED AND FLAPPING IN THE BREEZE, BLOCKING THE AIR FLOW AT WOT (he removed it and the car ran fine). Man . . .

outnumbered

I just checked mine.There was a quite a bit of oil in the housing.The air filter is oil soaked.Not terrible.It had dripped out onto the shroud(?) underneath.The top sticker is fine.The corners of the bottom sticker are begining to separate.

Foosh

Amazing......

outnumbered

Does anyone know if the sticker removal will have a negative affect on the emissions? My guess is not enough to worry about but thought I should ask.Also do all C6's have the same thing?

silver 0 six

Thanks to people like you and other forum members who share
these situations...we all learn something every day.

I am glad it wasn't anything serious and you can continue
to enjoy your car. ts

Short-Throw

Noob,

My snorkel inside had oil all over it. I do not think this was due to a poorly pressed patch. There are too many people now discovering a missing or loose patch.

PeterK

Ok. Now, lets hear your excuse on why GM made this booboo? Make sure to intervene your statement with references to the high-technology and unpatriotic US consumer. Also, make sure to note that this is a very minor issue and it keeps the price down, grass green and sky blue

TrackNoob

To me, sounds like we have a very unfortunate confluence of a couple of issues, resulting in a very bad overall situation:

1) The oil 'burping' of Z06 up into the intake track under certain conditions is real, confirmed by factory, and seems to have been experienced by more than a few CF'ers personally. A bit annoying in it's own right, but added to #2 &3, feels a bit ominous now

2) Both the C6 and the Z06 use carbon impregnanted 'patches' or 'stickers' or 'pads' in the intake channel downstream of the air filter, where if they were to come loose, they can cause havoc, and a partially detached one could be a real nightmare to diagnose.

3) The method of adhesion/retention for these 'pads' is doublesided tape [note - some also have been reported as having been glued with a silicone-like material]. The contours of the molded parts these items are taped to are not flat and has at least some texture. There is also the issue of mold release compound, surface prep, and individual workmanship variability in method of application by the installer (just slap it on versus press carefully with good pressure across entire surface) Given the potentially solvent-rich environment, the large volume of air flow across the parts, and the observable fact that they are not fully adhered on cars recently checked leads to a quite reasonable concern that they may, or more properly WILL, become partially or fully detached over the service life of the vehicle.

Like I said earlier, if I were GM, I'd quickly begin thinking about a more robust method, potentially involving SECURE integration of the carbon element into the face of the replaceable air filter assy. If more surface area is needed than the air filter can give up, then perhaps a molded 'pocket' or guide rails that a cartridge type element could go into to be securely fastened.

Bottom line -- without being alarmist, this is certainly not good.

Thanks again for being the point man to get this information on the radar screen.

[Edited to add that doublesided tape may not be the only way they are attached in all cars]

LTC Z06

Read the first page.

TrackNoob

Foosh is quite capable of responding for himself, and probably will, but I can't pass up a chance to pipe in:

I am a bit annoyed, and also glad this is now known, HOWEVER, I can tell you that GM are not the first, nor the only engineers to be lured by the appeal (siren song?) of doublesided tape products in badly chosen applications.

I would prefer not to go into details, but the reason this is so near to me is that in a past job, I had the opportunity to direct several engineers, and I mandated they cease using double sided tape backed wire bundle guides. These items can be found in most electronic parts catalogs. They are cheap, easy to apply, versatile as to where you can place them, easy to add after the initial design since they required no mounting holes or hardware... all in all, very appealing on the front end. However, they are almost certainly going to become detached sometime during use, service, storage, or shipment, as actual experience showed me, time and time again.

So I am not going to lambaste GM for this. I am going to stand by and see what they do to deal with it.

outnumbered

Thanks.I missed that one.

TheJimer

By my count that make at least 3 reported cases of loose H.T. Stickers just on this thread; therefore I am assuming that this is going to be a common occurrence. Rather then waiting for lighting to strike; mine are coming off tomorrow!

This is a fantastic forum; where else can you be apprised of a potential problem that GM itself probably isn’t yet aware of (or won’t tell us)!

Thanks Mike, Allan and everyone else that posted!

Save the Wave

Jim

outnumbered

In my Business we also use a form of double sided tape.The success is usually limited to the surface preparation.If the contact surfaces are prepared properly the bond almost seems indefinate.Also
plastic surfaces can be difficult to adhere to.

outnumbered

I must say it is troublesome that some must **** in ones eye whenever they have a chance.Furthermore I don't see the need for your rhetoric.I am sure it is getting old with more than just myself.American autos are not the only ones with issues.

TrackNoob

So glad he found that. As a kid, I remember I had a 327 Camaro that ran great most of the time, but just every now and then would quit stone cold, and crank but not fire.

Compression = check
Air/fuel = check
Fire = no spark

Usually, by the time I had pulled the dist cap and poked around, voltage was on the points, rotor and cap okay, reassemble, boom, would fire off and work for another week, no obvious reason found.

I had changed points, cap, condenser, rotor, wires, plugs, you name it at least once, mostly twice, and it would still do it.

Finally, traced it to a broken wire within insulation inside the distributor, going to the points, so when I moved the breaker plate or changed points, it would often 'connect' but sometimes 'disconnect'.

Intermittent issues are no fun! But, partial intemittent issues are the worst (like a flapping, but still somewhat adhered sticker might be)

allanlaw

The adhesive remnant of the lower pad that is missing from my intake does not look like it came from double sided tape. It appears to be a silicone-based adhesive. It was very stringy and impregnated with motor oil. Since it looked like the strings could also migrate to and through the throttle body, I cleaned them off. The top pad seems very secure at this point, so I left it alone, but it clearly appeared to be glued down rather than stuck on with double-sided tape. Note - my car was a fairly early build (8/31/05), so they may have switched to tape later on.

427Z0SX

Being that these 2 pieces of plastic stick-on pads are for pollution control, and NOT for performance, can I just take them both off and leave them off for goods, without setting any codes?

Thanks,

TrackNoob

Good info!

Note to self.... "Running..production... changes...make... Homer...a ...dull...boy..."

"Running..production... changes...make... Homer...a ...dull...boy..."
"Running..production... changes...make... Homer...a ...dull...boy..."



[Edited to add -- here is a closeup picture of mine where it had detached - note the filmy looking stuff - that is the tape free from both surfaces]