surging from 1000 to 2000 rpms

[Hoppin Hatchie]

ok, my damn hatch has a major surging problem, it will never idle lower than 1000 rpm, but will shoot from 1000 to 2000 like a million times before it quits....and sometimes on startup in the cold it will sit at like 2400rpm for a little.....what the hell could this be and how can i fix it?!?!?!?

[A20A1]

Is it carbed or fuel injected?

YOu may want to check your coolant level.

[Hoppin Hatchie]

fuel injected

[NXRacer]

do you have a custom intake like a short ram or cold air? If you unplug the vacuum line for the MAP sensor thats on the stock intake, it'll make it surge like that.

It'll idle high when its cold until it warms up then it should go down to a more normal idle

[Hoppin Hatchie]

actually, my old stock intake caught on fire (long story) and right now i ONLY have a k&n attached directly to the throttle body.....what do i need to do? she is running like shit.....please someone get back to me asap (i get off work in 2 hours, and my computer at home is toast)

thanks in advance!

[DanG86LX]

Whats wrong with ur computer ?

[A20A1]

Maybe that caught on fire too, :) j/k

[Hoppin Hatchie]

Whats wrong with ur computer ?


stupid ebay mobo

[NXRacer]

you need to tie in the vacuum lines that are unplugged from the black box on the fire wall to the intake manifold. youre gonna have to get some vacuum hose splicers and some extra tubing