Guidance Needed
Thread Starter
Racer
Joined: Nov 2003
Posts: 262
Likes: 52
From: Dover PA
St. Jude Donor '17
Guidance Needed
Took my 2000 FRC M6 on a road trip last weekend (Harrisburg, PA to NJ) on the PA turnpike. was cruising on the way home at about 80. Heard a noise almost like I had run over something then noticed that the engine was running rough and making noise. Wasn't lifter noise, oil pressure was at 40psi, gauges all normal. Had the clutch in engine at idle. Feathered the accelerator a few times and the problem stopped. No problems the rest of the way home. No messages on the DIC, no CEL, Only thing I could think of is Optispark. Could use some assistance on this one. 
Thread Starter
Racer
Joined: Nov 2003
Posts: 262
Likes: 52
From: Dover PA
St. Jude Donor '17
My apologies, Optispark was an assumption on my part as I have not has the time to investigate this yet (between full time work and running a horse farm). My priorities have been elsewhere, just trying to get a jump on looking at the problem. BTW, the car was a birthday gift from my wife a month ago, she found it, checked it out and bought it herself,
Administrator
Joined: Mar 2001
Posts: 367,756
Likes: 24,682
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Hope you find out just what went on. Pulling the codes might give you a lead. 
Banned Scam/Spammer
Joined: May 2007
Posts: 15,685
Likes: 1,330
From: Machineguns, because I don’t compromise
Since there isn't a current problem I wouldn't worry too much.
Pull the codes, write them down, and then delete them all.
That way if something else happens you have a fresh slate of codes to give you a clue.
By the way, these engines don't have a distributor anymore. Each spark plug has it's own little coil. The spark plug wire goes directly from each coil to it's own spark plugs.
Here's a pic showing the coil setup.
Pull the codes, write them down, and then delete them all.
That way if something else happens you have a fresh slate of codes to give you a clue.
By the way, these engines don't have a distributor anymore. Each spark plug has it's own little coil. The spark plug wire goes directly from each coil to it's own spark plugs.
Here's a pic showing the coil setup.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Racer
Joined: Nov 2003
Posts: 262
Likes: 52
From: Dover PA
St. Jude Donor '17
Didn't have time to look at it this weekend either. I'm sure I'll figure it out, after all I have the best help available here and I do appreciate you all. Didn't hit anything I'm sure of that. It was really strange though. Off on Thursday for Thanksgiving so hopefully I can pull anything then. I'll be sure to let you all know.
Thread Starter
Racer
Joined: Nov 2003
Posts: 262
Likes: 52
From: Dover PA
St. Jude Donor '17
Ok. So I finally got around to pulling the codes and here's what I found:
TCS: C1225H LF Excessive Wheel Speed Variation
BCM: B2578H R Front turn signal monitor circuit
B2583 L Front Turn signal monitor circuit
IPC: U1176H Lost Communication with XXX
U1160H Lost Communication with XXX
RFA: U1096H Lost Communication with XXX
U1064H Lost Communication with XXX
U1016H Lost Communication with XXX
Is there anything here That would cause the engine run problem that I described? Is the RFA designation have to do with the FOB/Transmitter/Receiver system? Appreciate your help and/or advice.
TCS: C1225H LF Excessive Wheel Speed Variation
BCM: B2578H R Front turn signal monitor circuit
B2583 L Front Turn signal monitor circuit
IPC: U1176H Lost Communication with XXX
U1160H Lost Communication with XXX
RFA: U1096H Lost Communication with XXX
U1064H Lost Communication with XXX
U1016H Lost Communication with XXX
Is there anything here That would cause the engine run problem that I described? Is the RFA designation have to do with the FOB/Transmitter/Receiver system? Appreciate your help and/or advice.
Last edited by t1fudd; Dec 5, 2016 at 10:01 AM.
Le Mans Master
Joined: Jan 2004
Posts: 9,488
Likes: 1,743
From: Knoxville Tn
With those loss of communication codes, I'd start with the battery and the grounds. Somewhere here is a great writeup on checking the grounding points, I'm sure someone will post it.
With that said, it doesn't appear to me that it's a serious problem.
I also suggest you clear the existing codes, so if it occurs again you'll have a fresh starting place.
With that said, it doesn't appear to me that it's a serious problem.
I also suggest you clear the existing codes, so if it occurs again you'll have a fresh starting place.
Last edited by Phanni; Dec 5, 2016 at 10:59 AM.
Thread Starter
Racer
Joined: Nov 2003
Posts: 262
Likes: 52
From: Dover PA
St. Jude Donor '17
With those loss of communication codes, I'd start with the battery and the grounds. Somewhere here is a great writeup on checking the grounding points, I'm sure someone will post it.
With that said, it doesn't appear to me that it's a serious problem.
I also suggest you clear the existing codes, so if it occurs again you'll have a fresh starting place.
With that said, it doesn't appear to me that it's a serious problem.
I also suggest you clear the existing codes, so if it occurs again you'll have a fresh starting place.
