SVTP Help!

[JorgeM]

I have a 01 cobra and recently it shakes more than usual at idle and whenever i go WOT it doesn't run how it usually does,feels like something is holding it back until around 5k rpm.also when idling for more than a minute it starts throwing white smoke from left side tailpipe,i already checked coolant and oil and everything looks good,what can it be?:shrug:

 

[01RedBeardCobra]

Valve seals fouling plugs? Check them

 

[JorgeM]

ill take a look at them also i noticed that before at 80mph my rpms would be at 3k now there at 2,800 at 80 mph

 

[kevin01cobra]

ill take a look at them also i noticed that before at 80mph my rpms would be at 3k now there at 2,800 at 80 mph

The whole decrease in rpm literally makes no sense. An increase could mean a slipping clutch.

 

[JorgeM]

The whole decrease in rpm literally makes no sense. An increase could mean a slipping clutch.

That's is what my car is doing tho lol

 

[JorgeM]

so i found out my car was missfiring but i still cant figure out the rpm deal:shrug:

 

[black4vcobra]

What gears does your car have? I would suspect it is an issue with the speedometer calibration.