skillaa14

Hello,

I have a TT G37. I haven't really got to drive it that much in the winter, but recently my battery was dying quicker and would frequently need a jump (I try to start every 2 days to keep from dying). Anyhow, my battery just flat out died, so I replaced my current battery when an Optima Red Top, easy quick installation. Car started up quick. Went for a quick drive when the car just stalled out at the light. I turned it back on and ignored it. The car would hit 2000-2500 RPM and keep revving out and car would barely move. I pulled over, and try to get moving again to see if it would happen again and it surely did. I'm reading up that this is 'limp mode'. Any ideas of how to fix this or go about this? I wouldn't want to reset ECU as i'm tuned on UpRev and wouldn't want to interfere with that. I don't think a battery change would cause an ECU reset, cause if it somehow did, that would explain the rough idle and limp mode. Anyone with any suggestions/info would greatly be appreciated. Thank you!

Edit: I have a 2008 G37S 6MT with 58K miles
Also Maf sensors along with cam sensors were changed not long ago at a shop

Epiphany

Are your cables clamped down fully making good contact on the battery?

skillaa14

Hey, yeah from what I see the cables are clamped tight. But come to mention it, the negative it def on nice and tight, but the positive seemed to have some very light wiggle room. The terminal itself seems like its weak and rusty. I might get a replacement and see if this works. The car was running fine with my previous battery. Thanks for the suggestion!

Epiphany

Definitely could be that then. Get some battery cleaner get both posts and clamps clean and make sure they're fully clamped on.