All,

I just had my check engine light come on this AM on the commute in to work. I don't have OnStar and the car has no major mods (SLP Blackwing and SLP superflow exhaust. All the mods have been on the car for a minimum of two weeks (no probs).

Q: Is there anyway that the DIC will tell me what the prob might be. I've navigated through the DIC and didn't see anything? Maybe I missed something?

Q:Is there some other way to get a code by watching the check engine light?

First thing I've done was check the gas cap - no change. Any advice is appreciated.

 

Unfortunately, unlike the C5, there is no way to check the code without a code reader. You say the mods have been on the car for two weeks without a problem but you don't say how much you've driven the car in those two weeks. It can take a certain number of ignition cycles or certain conditions to be met for a code to be set and display the light. It is also possible that something in the install of the Blackwing has come loose. That would be the first place that I would check. Check the connections to the coupler.

You can usually stop by an autoparts store and they can/will check the code for you. Your only other options are a trip to a dealer or purchase a code reader yourself. There are some available for the Corvette for around $60.00.

http://www.diydiagnostics.com/

about half way down the page you will find a CANBUS capable OBDII diagnostic reader for $59.99

Once you get the code you can post back here and we can help give you some direction.

 

Thanks...

It's my daily driver and have at least 7 round trips back and forth to work (17 Mi - one way) and numerous little jaunts in between.

I'll check the Blacking for any leaks etc...

When I installed it, I did not disconnect the battery... Would that have an effect? On my old 5.0 I would disconnect the battery, reconnect and let the car idle for 5 minutes after a change (intake , headers etc) to let it "learn" the new setup. I thought the vett was beyond that -

So would disconnecting the battery and letting the car sit for a few minutes effectively reset the OBC? Thus forcing the car to learn to breathe with the new CAI?

 

You can go to Autozone and they will hook it up to a code reader for you. Best part is that it's free.

JJ

 

Worth a shot honestly. Stranger problems than that have been solved with a "reboot". Typically however it takes x number of iginition cycles to clear a code. The best thing to do is swing by an Autozone at lunch time and have them pull the code for you.

The C5 actually had an idle relearn procedure of a similar method as your 5.0. It wasn't required as the car would eventually do it any way but the relearn would speed the process. It went something like, disconnect the battery, do the install, reconnect the battery and start the car. Idle in neutral with the AC off for x minutes, rev in neutral for x minutes and take it for a good 50 mile drive.

 

I've had this happen on my 08 (3100miles) a few times. Each time I brought it in, and they said it was running rich for some reason.. Could've been the gas, but the mechanic did mention that they were having this problem all over the country and there might be redesign of the MAF sensor or even air intake.. Funny thing is it hasn't happened since December... Weird for sure..

 

I did get some HESS gas the other day for cheap... Maybe a fill up of fresh 92-93 octane will help... Thanks all for the above advice.

 

Check your gas cap to make sure it's on tight. A loss of pressure will cause the check engine light to go on-it is a pressurized system.
Good luck.

 

Sweet----

I got home and disconnected the battery and let it sit for 2o minutes or so. The sitting for twenty minutes I doubt had any effect as I would think any potentials would bleed down pretty swiftly after the circuit was open. Anyway, the reason for the twenty minutes was the fact that I dropped the socket off my 3/8" driver while loosening the battery terminals - you guessed it, down the little "void of hell" right next to the wheel well. All I heard was clunk, de clunk, clunk and no sound of it dropping out onto the driveway. After several minutes pondering the situation I tried using my light duty shop vac - no joy. I eventually had to unbolt some of the bottom of the the wheel well flange cover - I then ished around and was able to grab a hold of the offending socket with a pair of long nose needle nose pliers. Whew! I'd feel like a complete dolt if I had to take it in to the dealer to retrieve a socket.

Anyway; long story short, after the unintended delay I re-terminated the battery, started the car and placed the beast in neutral (hurrah! no check engine light) and let it idle for five minutes - then took it for a "brisk" drive - parked, shut it down, got back in and restarted - still no light - wee! It did this a couple of more times and all is still good.

 

Great news.

 

Mine did this about 2 months ago. Dealer diagnosed it as a P0442 code, evaporator leak. They did a check, no leaks, cleared code, hasn't happened since.

 

P0442 = Evaporative Emission Control System Leak Detected (small leak)

If you ever wanted to know:

http://www.autoshop101.com/forms/h62.pdf

 

You really should complete your profile.

 

99.9% chance Gas Cap!

 

You can get more help this way.

 

Ok, ok, already... I've updated it... I swear I'm not a spy for Toyota!

 

Thanks-we all feel better now!