zombiehouse

Ok, a little background first. I have an 05 V6 Vert. The only mod on it right now is a Magnaflow dual catback exhaust.

I have been having a big problem with the car sputtering and struggling for power for a while now. The problem happens after the car has warmed up and I try to take off from a stop or gain speed on the freeway. When it is cold the car runs fine. The problem can start after just a few miles sometimes longer. One night as I got onto the freeway after just 2 miles of driving the engine seemed like it was going to die and the CEL came on for all of 20 seconds then went off. It hasn't come on before or since.

I have replaced the fuel filter, removed my Airaid CAI and reinstalled the stock airbox, changed the plugs to E3's, and changed the oil. I have also cleaned the MAF and throttlebody. The battery was disconnected for a couple of hours during the work. I have driven the car almost 300 miles since then.

Does anyone have any suggestions of what to try next? I am a teacher and off for the summer so I have very limited funds to make it for the next couple of months. Any help would be greatly appreciated.

Nuke

How many miles do you have on the car? Had you done any other work to it? How about fuel? Have you changed gas stations? Do you have the water leak issue? Your issues can be a number of things from fuel to igntion to corroded contacts at the SJB.

zombiehouse

41K miles on the car. No water leak issue. I have tried Chevron, 76 and Shell gas with the same results. No other work done to it.

davesyo

Since the CEL came on ,did you check for codes ?

staggolee

Powertrain warranty goes up to about 60k miles so i'd take it to a dealership and have them take a look. I was having a very similar sputtering issue and the dealership fixed it for free because the only problem was that my drivers side exhaust pipe right behind the cats wasn't hanging properly and causing a bunch of stupid vibrations.

zombiehouse

From everything I have read the warranty on the powertrain was only 3 years or 36K miles.

zombiehouse

I don't have any way to check for codes.

staggolee

You're right, i messed that one up bad. I think i was thinking about the extended warranty or something else...

zombiehouse

Staggolee, how did the vibrations in your exhaust cause the problem? Was it causing some kind of exhaust leak?

up_yours_7

when i first did my E3 plugs I had a hair crack in one of the plugs and it would do the same thing so i got a new one and hasn't done it since