Car revs up spontaneously

[always_broken]

I haven't done any modifications before or after this happened. What's going on is let's say I get on it a little bit (3grand in 2nd gear), when I step on the clutch to change gears my car revs up like crazy! It redlines.. I freaked out the first time thinking my throttle cable got stuck. IDK what's going on. I figured out how to stop it, well it happens so quickly so I don't know if it's accurate but I step on the clutch again and rev it to bring it back down. Anyone wanna help diagnos this?

 

[romeen]

You can remove the TB elbow and make sure the TB plate isn't getting stuck. Clean out your TB while you're there. Also make sure the throttle cable isn't binding on anything.

 

[armandovivoni]

yep sounds like your throttle is getting stuck open. some carbulator cleaner might help

 

[always_broken]

Ok, I'll give that carb cleaner a shot and update.

 

[romeen]

If you don't mind spending a couple extra bucks try "Deep Creep". It's the well-loved "Seafoam" repackaged in a spray can. Regular carb cleaner cleans well but also tends to dry things out. The Seafoam/Deep Creep cleans very well and lubricates at the same time. If something is sticking you may get better results with it. Around here I know that NAPA carries it. Just something to consider.

 

[always_broken]

Till this day I still get the same problem. I replaced the stock tb with a 1g tb. My next guess is cable. Today I just did the EGR block off mod but didn't test drive, maybe that fixed it but what else?

 

[pooker]

Any leak around your intake manifold will do this also not just the throttle body, if you have a blown intake manifold gasket , etc it will suck in that air and make it rev like that.