jab83

I'm not sure if its a vacuum leak But not for sure. But let me tell you whats happening. when I drive and turbo kicks in and go to shift the RPMS stay and dont go down. at all. takes about 3 or 4 seconds for it to start going down. this is all while the clutch is held in. But when i free rev at a stop it'll do it too. I checked cable its not sticking. and i asked a friend who's owned many turbo cars. and he says check vacuums. does this sound right guys??? @_@ thanks alot for any input

rogerz

probably all that fancy idle junk hanging off the driver side of the plenum. take it all off throw in trash block the hole with a plate and rerun your vac hoses. haven't had a problem since I did that and you get rid of that ugly three or four pipe unit going across the front of the engine. rerun the hoses to the carbon canister under the air filter and then back to where they go now.

jab83

that sounds awesome. But I'm not sure I follow completely. @_@ As my car doesn't have a stock filter. and plenum??? Is that the intake Mani??? or like a intake Mani?? @_@

jab83

And also SO i don't start another thread... K&N Performance Intake Kit 57-6002: Buy the right Air Intake Kit -Performance at Advance Auto Parts has anyone used this filter setup?? if you have can i see a picture?? of how it looks?? MY car doesn't have a stock air box. or a filter on it at all.... @_@ I didn't have the money to buy a new one. But I threw a sock over it to keep from sucking anything big in. lol.. I get paid thursday. so i play on getting a good filter for it. just not sure what to get... IF i should get this? or just throw a lil cone filter on it. @_@ thanks guys.

cords z31

does your car idle high? I experienced this exact same situation where the rpms would stick, it turned out that my TPS was wired up wrong... so maybe your TPS is no good anymore? or the wires are hooked up wrong? manual cars have 2 wires, the top connector and the middle connector, the bottom is left blank.

rogerz

you have a plenum be it aftermarket or no. plenum refers to a duct with high pressure which is what you get when you turbo charge. what do you have under the aluminum plate that says 300zx atop the engine. probably your plenum unless someone totally repiped everything in the air supply system for your engine. look at where all the hoses go and u will see what I mean about removal. I'd post a pic but can't do that anymore. if you have anything like the stock idle setup that is your problem.

jab83

I dont have the top plate thing. :/ Just the plenum. I know what your talking about now. I haven't looked at the lines and stuff yet. what did you use to plug yours??