idling problem after intake manifold clean out

noelaorozco · Sep 28, 2013

So i had a mechanic clean out my intake manifold cause it was passing the smog test, so after its all down the car now idles around 2k rpm and will gradually go down to 1500 rpm. Which is getting a little annoying because when im at a light you can feel the car idling like that. also when i turn on and turn off the car the whole seems to like shutter as if something was left loose. You guys have any idea what this things could be? Thanks

Chris Vu · Sep 28, 2013

How much have you driven it? Take the car out, get on the freeway and do some really hard pulls for about 15 minutes. If that doesn't work, you might have a vacuum leak.

F23A1AT · Sep 28, 2013

I'd bet money that when they put your intake manifold back on the set the throttle cables incorrectly. This is assuming they took it off to clean it.

Chris Vu · Sep 28, 2013

F23A1AT said:
I'd be money that when they put your intake manifold back on the set the throttle cables incorrectly. This is assuming they took it off to clean it.

If they did truely do that, I'd never ever go back to that mechanic if I were you .. haha.

noelaorozco · Sep 28, 2013

Thanks guys, this give me somewhere to start from, but haha i hope its the cables that would be an easy fix hut careless mistakes but we'll see

bairdandrew77 · Sep 30, 2013

Do you know if he took off the manifold? My money's on a small leak around one of the gasket areas

noelaorozco · Sep 30, 2013

Yeah he did, but problem seems to fixed itself after some highway miles, it now idles around 1k rpm or a little below, much better than 2krpm.

My only problem now is my cel came on again but for the knock sensor, which he replaced -___-