Weird scenario. I drive my 11 GT500pp one day park it for the night all is fine. First start up next day and wow problems appear. The cars idle has dropped, exhaust note is noticeably quieter and when driving its chugging. You can hear the as the rpms build in neutral or when driving its falling on its face. Ive checked the plugs they are good, no codes or lights, Ive checked for vacuum leaks and cracks in the EGR tube all appears well. Any ideas of what could be going on? Im stumped. Mods to the car are trinity blower and pullied, BPS idler and blower elbow, CFM throttle body, ID 750 0r 1000 injectors and not sure of the tune. Ive had this car 5 years and never changed the tune and never had any issues. Thanks in advance.
Limp mode (no lights or cels)
- Thread starter Twisted1
- Start date
Its a few years maybe 4 and its the high end advanced battery. I have a load tester I'll load test the battery and check alternator tonight.
Check battery/alternator, those can cause a slew of issues if voltage is low. I was chasing an "idle" issue, turned out to be my alternator was dropping voltage at idle, as well as randomly throughout the powerband (per datalogs).
What battery are you using? Volts while vehicle is on?
I dont have the tuner, the previous owner kept it lol so it's whatever he put in it
it's
It's an advanced silver battery about 4 or more years old. Running its at exactly 14.6 volts
Is that reading directly from the battery?
Yes
Sounds like the battery is good then
Then that puts me back in a pickle. I'm so lost now idk which way to go next
If you dont need to smog anytime soon id unplug the battery for 12hr and then hook it back up and see if relearning helps.
Make sure your air intake tube didn't fall off or come loose or any kind of a air leak like that. It's odd that the last time you drove it everything was fine and now it has a issue.
I took it all apart its all good I'm at a loss
Next thing I would try is disconnect the battery over night, let the ECU loose its memory.
A fully charged battery, 1-2 days after fully charged should read 12.60 to 12.79, in warm temps. Anything under 12.40 is considered discharged, and should be charged.
A battery that won't charge above 12.40 volts needs to be replaced.
If you charged your battery, and it reads 12.0, especially after 4 years, needs to be changed, even with the car on reading 14.6V.
A battery that won't charge above 12.40 volts needs to be replaced.
If you charged your battery, and it reads 12.0, especially after 4 years, needs to be changed, even with the car on reading 14.6V.
It was a mistake to not get the tuner from the previous owner. Stock tune of the vehicle is probably saved in it. And if you need to reinstall the tune for any reason you're screwed.
It sounds like the battery is toast, get a new one they're not expensive.
Sent from my SM-N975U1 using the svtperformance.com mobile app
It sounds like the battery is toast, get a new one they're not expensive.
Sent from my SM-N975U1 using the svtperformance.com mobile app
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