5,300-5,500 stumble - SRT Forums

**1badsrt-4** · 02-01-2007, 06:07 PM

Well this problem with my car has been bugging me for quite sometime. It started out of no where. The problem is at about 5,300-5,500 my car misfires. It sounds like the car is on the Rev limiter. Now here is the odd part. It only does this in first and second gear. If I click third and run the car to redline it pulls like a train. Im getting a misfire code for cylinder #4 and a multi-cylinder misfire. I have changed the coil, wires, and plugs. Im now running a stock coil, ngk 4306 plugs and msd wires. The only thing I havent done is move injectors around. It doesnt matter what psi I run and the car is running about 11.4 a/f. The only other things I can think of are intake leak or injector clog. Any ideas would be great. And I will list my mods

57 trim turbo, SAFC, CTI tb exhuast and fmic, hardpipes bov, rc 750's, kenetic tb. I have others but those are the basics.

**Masssilversrt4** · 02-01-2007, 06:36 PM

For some reason my car does the same thing in lower gears.. But i'm not throwing any codes.. Almost like it lights off too quick.

**1badsrt-4** · 02-01-2007, 06:37 PM

Quote: Originally Posted by Masssilversrt4

For some reason my car does the same thing in lower gears.. But i'm not throwing any codes.. Almost like it lights off too quick.

Hmmm, this is odd Dave

Usedcarfinders · 02-01-2007, 07:04 PM

stupid question, have you checked your plugs?

**1badsrt-4** · 02-01-2007, 07:04 PM

Quote: Originally Posted by Usedcarfinders

stupid question, have you checked your plugs?

Changed them twice.

Usedcarfinders · 02-01-2007, 07:09 PM

I had that problem too when I bought my SRT, they replaced the plugs and wires, problem fixed, maybe your wires? Try the stock ones if you still have em

dgillie · 02-01-2007, 07:11 PM

make sure you check the gap in ur plugs and that the wires rfom the ignition coil are in the correct firing order

**1badsrt-4** · 02-01-2007, 07:17 PM

They are all gapped correctly and I have tried 3 sets of plugs and wires and 2coils. Same problem stll occurs.

Usedcarfinders · 02-01-2007, 07:18 PM

Quote: Originally Posted by dgillie

make sure you check the gap in ur plugs and that the wires rfom the ignition coil are in the correct firing order

I got the impresion this problem came out of nowhere, so im thinking one of his wires are trashed

4DRVIPER · 02-01-2007, 07:19 PM

2 Mods huh? lol, I x2 this guy's recommendation. I had the exact same problem when I installed Stage 2. Changed evrything out, coils, plugs, gaps on plugs changed, nothing, car would get to about 5800, and it would happen! Iridiums suck! lol ONLY reason why I say this is because THIS WAS my problem. Installed silver plugs, and now I run all the way up to 6500rpms, no issues. Same gap, only changed the plugs. Hope this helps, for all you iridium users. J/K

Quote: Originally Posted by dgillie

make sure you check the gap in ur plugs and that the wires rfom the ignition coil are in the correct firing order

**1badsrt-4** · 02-01-2007, 07:21 PM

Quote: Originally Posted by 4DRVIPER

2 Mods huh? lol, I x2 this guy's recommendation. I had the exact same problem when I installed Stage 2. Changed evrything out, coils, plugs, gaps on plugs changed, nothing, car would get to about 5800, and it would happen! Iridiums suck! lol ONLY reason why I say this is because THIS WAS my problem. Installed silver plugs, and now I run all the way up to 6500rpms, no issues. Same gap, only changed the plugs. Hope this helps, for all you iridium users. J/K

Quote: Originally Posted by dgillie

make sure you check the gap in ur plugs and that the wires rfom the ignition coil are in the correct firing order

Trust me when I say this, Im no rookie to this car or automotive. This is what I do for a living, im just stumped at the moment. I have checked the gap and changed my plugs more then 3 times.

4DRVIPER · 02-01-2007, 07:28 PM

Whoa Kahuna, calm down, I am sure you are very knowledgeable. I was simply poking fun at 2 Mods talking among themselves about this problem they share. Nothing more!

Quote: Originally Posted by 1badsrt-4

Quote: Originally Posted by 4DRVIPER

2 Mods huh? lol, I x2 this guy's recommendation. I had the exact same problem when I installed Stage 2. Changed evrything out, coils, plugs, gaps on plugs changed, nothing, car would get to about 5800, and it would happen! Iridiums suck! lol ONLY reason why I say this is because THIS WAS my problem. Installed silver plugs, and now I run all the way up to 6500rpms, no issues. Same gap, only changed the plugs. Hope this helps, for all you iridium users. J/K

Quote: Originally Posted by dgillie

make sure you check the gap in ur plugs and that the wires rfom the ignition coil are in the correct firing order

Trust me when I say this, Im no rookie to this car or automotive. This is what I do for a living, im just stumped at the moment. I have checked the gap and changed my plugs more then 3 times.

**1badsrt-4** · 02-01-2007, 07:32 PM

Quote: Originally Posted by 4DRVIPER

Whoa Kahuna, calm down, I am sure you are very knowledgeable. I was simply poking fun at 2 Mods talking among themselves about this problem they share. Nothing more!

Quote: Originally Posted by 1badsrt-4

Quote: Originally Posted by 4DRVIPER

2 Mods huh? lol, I x2 this guy's recommendation. I had the exact same problem when I installed Stage 2. Changed evrything out, coils, plugs, gaps on plugs changed, nothing, car would get to about 5800, and it would happen! Iridiums suck! lol ONLY reason why I say this is because THIS WAS my problem. Installed silver plugs, and now I run all the way up to 6500rpms, no issues. Same gap, only changed the plugs. Hope this helps, for all you iridium users. J/K

Quote: Originally Posted by dgillie

make sure you check the gap in ur plugs and that the wires rfom the ignition coil are in the correct firing order

Trust me when I say this, Im no rookie to this car or automotive. This is what I do for a living, im just stumped at the moment. I have checked the gap and changed my plugs more then 3 times.

Dave and I know each other well. I wasnt fliping out I was just stating that I have a clue.......well sometimes

BTR · 02-01-2007, 08:04 PM

what happens to the AFR when the stumble occurs?

**1badsrt-4** · 02-01-2007, 08:07 PM

Quote: Originally Posted by BTR

what happens to the AFR when the stumble occurs?

Rich im not 100% sure but I think it stays the same or very close. Its not really a stumble per say, it sounds/feels more like the car is hitting the rev limiter