TVL65

My 08' TLS currently has 68,000 miles. I've changed the air filter every 15,000 miles & always put premium gas in it. Oil & filter is changed every 5,000 miles with synthetic. I've added a bottle of seafoam to the tank every 10,000 miles or so. I've noticed lately that taking off from a dead stop the car bogs up to about 3,000 RPM's or and then it surges as if a turbo is kicking in, and I have the pedal floored. It's annoying pulling onto a highway. I've never replaced the fuel filter or PCV valve. Any thoughts what this could be? There is no check engine light either. I know that without a fault code it is difficult to find the problem, I mentioned this before to the dealer & mechanic said it's fine. It's NOT FINE. It didn't run like this when I bought it new.

justnspace

iTrader: (1)

heat soak?

csmeance

with 68K on the car, when's the last time you changed the Automatic Transmission Fluid? If you have a 6MT sound like your clutch is slipping...

TVL65

Changed the trans fluid every 20,000 miles, just changed at 60,000 miles.

BukvaMan

welcome to the club ive been trying to get rid of that problem for a long time. Heat soak contributes to it a lot, hot weather as well. I cant even do a burnout if i wanted to. It is always very week until about 3500 rpms. And i have couple of good bolt ons. If i have fun driving she does all right but regular driving kills me as she feels so heavy...

TVL65

3,500 RPM's that's when the power kicks in! I was driving the car for 45 minutes, then idled at a car dealership for 5 minutes, then I stopped & got gas, when I pulled out it was a dead pedal up to 3,500 RPM's.

esco115

I dont use seafoam due to many bad/good reviews and if not used right its more harm then good... But sucks nontheless, I have 08 with 20K never had a problem like the op stated...

justnspace

iTrader: (1)

Heatsoak, sir.

BukvaMan

try to put an octane booster next time you fill up. I use the one from lucas, its about 10 bucks and cures the problem temporary....