This morning my car started noticably missing. When I got to work I pulled out the laptop and logged current and history misfires on each cylinder but there were zero events. My engine diags/misfire tables are stock so I can't figure why I would not be logging any misfires.
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
In reading this: http://www.hptuners.com/forum/showth...hlight=misfire
It looks like misfire detection may be disabled in SD.
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
Some vehicles require a crank relearn after crank, crank sensor, balancer, ecm swap etc., before it will run the misfire moniter.
If you just want to find the dead hole, pull injector connectors one at a time while it is running, the one that changes the idle the least is most likely your problem hole.
Yea, I can do that. I just wanted to have HPT do it for me.
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
I have used the Cyl balance test in the scanner with C5's, dont know if I have gotten it to work with a C6 or not. Maybe another option that will keep your hands clean.
Thats never worked on the C6's. At least not the E40 PCM ('05 vette).
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
Maybe a heat gun shooting the exhaust tubes will do it.Originally Posted by 5_Liter_Eater
Yea, I can do that. I just wanted to have HPT do it for me.
You lost me...
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
You mean like aninfra red thermometer on each header tube?
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
Is your weather changing drastically?
Gray Ghost- The abomination. 2007 Chevrolet Silverado CCSB. 98mm turbo, nitrous, 428LSX, Rossler 80E with a brake. Finally finished. 23 psi, no numbers, Slow as hell.
PBM G8- Aluminum 364, twin Precision 67/66 turbos, 6L90 trans swap, CTS-V/Vaporworx fuel system, slowly making progress.
Dads 2011 CTS-V- Stock bottom end, stock heads, LS9 cam, pullies, ported blower, ported TB, D3 goodies, and lots of nitrous.
618/618 motor
906/862 spray
Caterpillar 50 Forklift- Duramax swap
Yes, Do it from a cold start. the cylinder that lags behine the other when gettting warming up will be the dud
04 Velocity MKII M6 & 06 BF F6 555 ZF6
Sorry for the confusion [slang term for the infrared gun]
might be the alternator? LOL or the plugs again!
nln
Was too lazy to look at it over the holiday weekend and the time I did want to work on it got trumped by playing spider man on my roof hanging xmas lights. Getting the bug to drive it so I'll find out this week some time.
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
i dont think it will show on a SD tune. ive tried on my 05 before and its SD and never get anything......
switch the car to a Maf tune just for a quick cruize/idle around.
I set all DTCs to no error reported save the P0103 (MAF) and I got two misfire events, one for #4 and one for #3, after running the car for about a minute in the garage.
I tried the IR thermometer but my Harbor Freight jobby was not giving repeatable results.
I had thought of switching to a MAF tune but something about the orientation of the card dtyle MAF in this charge tube hates a MAF tune. I have to jack the MAF table way up just to get it to run and it runs poorly.
So I changed all the plugs (I wanted to since I had changed from NGK to Autolite to see if it resolved my charging issue) and when I did the #3 plug wire came apart and the #4 plug wire was not clicking onto the plug.
So....wires.
Bill Winters
Former owner/builder/tuner of the FarmVette
Out of the LSx tuning game
BUT... can you log misfires with the custom OS1 SD tune?
Reply With Quote