cb2big4u Posted April 17, 2012 Report Share Posted April 17, 2012 My CEL was flashing while I was on the interstate. I have no cats and just got my BBP tune a fee days ago. Didn't do it before. What gives? Quote Link to comment Share on other sites More sharing options...
The_aSSet Posted April 17, 2012 Report Share Posted April 17, 2012 Get the code from AutoZone with their scanner and go from there. Although if its flashing I thought it was something specific but I can't remember Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted April 17, 2012 Report Share Posted April 17, 2012 When it flashes it is a code for either a misfire or multiple cylinder misfires.Time to change the plugs and wires. Quote Link to comment Share on other sites More sharing options...
The_aSSet Posted April 17, 2012 Report Share Posted April 17, 2012 That's right! yea check all your plugs and wires Quote Link to comment Share on other sites More sharing options...
cb2big4u Posted April 17, 2012 Author Report Share Posted April 17, 2012 Wow Ty. The MSD wires and NGK plugs in my Sig are still in the boxes. Was going to put them in this weekend. I guess it is that time. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted April 18, 2012 Report Share Posted April 18, 2012 Usually a flashing CEL is for a catalyst damaging random engine misfire.....get the code scanned and tell us what it is. Did BlackBear tune you for no cats? Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted April 19, 2012 Report Share Posted April 19, 2012 I thought that if it's flashing something is seriously wrong and to pull over and turn it off, call a tow truck and get er fixed. Pretty sure I read that out of the manual. Don't quote me though. My memory is the sh!ts. Quote Link to comment Share on other sites More sharing options...
cb2big4u Posted April 19, 2012 Author Report Share Posted April 19, 2012 Black bear did tune it for no cats. It only did it for a few seconds than hasn't done it since. At the time I was going around 100 on the interstate. Replacing plugs and wires this weekend then hope it never comes back. I looked at my codes through efilive and nothing is there other than stupid vent solenoid and some speakers since the wires are chopped and to to amp. ::shrug:: Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted April 19, 2012 Report Share Posted April 19, 2012 Its a misfire issue common problem. Google flashing Check Engine Light... Quote Link to comment Share on other sites More sharing options...
chawkins6789 Posted April 19, 2012 Report Share Posted April 19, 2012 whats the advantage of the NGK's over Delco's Quote Link to comment Share on other sites More sharing options...
The_aSSet Posted April 19, 2012 Report Share Posted April 19, 2012 They are a cooler plug, good for forced induction and nitrous Quote Link to comment Share on other sites More sharing options...
cb2big4u Posted April 19, 2012 Author Report Share Posted April 19, 2012 whats the advantage of the NGK's over Delco's Just preference of me always running NGK in my other cars. And the majority of people on here run them also. Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted April 19, 2012 Report Share Posted April 19, 2012 I agree with going with the NGK TR5 plugs.... I run NGK in all of my chevys and they never let me down. Just make sure to gap them in at 50 to 55 thousands. Quote Link to comment Share on other sites More sharing options...
cb2big4u Posted April 19, 2012 Author Report Share Posted April 19, 2012 But in my manual it says to do .040 which is what Chevy released a bulletin saying a couples years back. There was controversy over this on other forum posts with guys that had manuals saying .060 gap. My 2006 I guess has an updated manual to the bulletin and says .040 for every size motor in our trucks except the v6. The TR55ix was the plug with .060 pregapped. The TR5ix is a .040 pregap. Just putting it out there. Sent from my Rezound using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
2001silverado364 Posted April 19, 2012 Report Share Posted April 19, 2012 (edited) The size of spark plug gap was dependent on the type of plug used. When Chevy used platinum, they gapped them at .060. When they switched to iridium, they gapped them at .040 for smoother idle reasons. There is a TSB on it if you search. FWIW, I sidegap mine at .055. Matter of fact, here it is. Document ID# 1396703 -------------------------------------------------------------------------------- Subject: Information on New Spark Plugs and Gapping #03-06-04-060 - (10/24/2003) Models: 2004 Buick Ranier 2002-2004 Cadillac Escalade, Escalade EXT 2003-2004 Cadillac Escalade ESV 2004 Cadillac CTS-V 1997-2004 Chevrolet Corvette 1998-2002 Chevrolet Camaro 1999-2004 Chevrolet Silverado 2000-2004 Chevrolet Suburban, Tahoe 2002-2004 Chevrolet Avalanche 2003-2004 Chevrolet Express, TrailBlazer 1999-2004 GMC Sierra 2000-2004 GMC Yukon, Yukon XL 2001-2004 GMC Yukon Denali, Yukon XL Denali 2002-2004 GMC Sierra Denali 2003-2004 GMC Envoy XL 1998-2002 Pontiac Firebird 2004 Pontiac GTO 2003-2004 Hummer H2 with 4.8L, 5.3L, 5.7L or 6.0L V-8 Engine (VINs V, P, T, Z, G, S, N, U -- RPOs LR4, LM4, LM7, L59, LS1, LS6, LQ9, LQ4) -------------------------------------------------------------------------------- A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION © Copyright General Motors Corporation. All Rights Reserved Edited April 19, 2012 by No SS (see edit history) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.