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Old 10-05-2010, 10:05 PM   #1
choleaoum
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Default Wierd noise caused when MAF is plugged in..

Hey guys, just changed out my tgv gaskets, and intake manifold gaskets and now I put the manifold back on. It's making a WIERD clicking noise it sounds like its traveling along the manifold. I highly doubt theres a bolt inside the manifold because it would have bent the valve by now.. the throttle body is clean, tmic is clean.. turbo manifold was cleaned. Before I changed the manifold, I made sure to tape all the open holes shut.

Here's the noise, sorry if I was talking too much just aggrovated with the damn car.


Note: I have reason to believe that I have routed the vacuum lines wrong, can someone give me a diagram? The blow off valve seems to be blowing off into my intake? I'm not sure.. but the BOV wasn't going off. (the video might show it's unhooked, but it wasn't working still)


Symptoms: Bad idle, jumps from 800, 300, 1500, 2000 and etc. If I suddenly rev the engine around 5k and let off the gas, it will just shut off. There's fuel and stuff too, there are two hoses that aren't connected and they are on the throttle body, can anyone tell me where those would go?

Note: I also posted this in the Factory 2.0 section but I think I would find better help here.


UPDATE 10/6/2010: So I discovered that whenever I plug the MAF in it sounds like the throttle body clicks? I think it's the butterfly valve shuttering or something I'm not even sure. The idle stays stable when the MAF is disconnected, but drops and dies when i plug it back in. I tried cleaning it, no go.
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Last edited by choleaoum; 10-07-2010 at 02:00 AM.
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Old 10-05-2010, 10:54 PM   #2
Nuke209
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unplug the maf and see if it idles fine

you probably have a leak somewhere around the intake manifold
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Old 10-05-2010, 11:21 PM   #3
Csquared33
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start spraying brake cleaner
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Old 10-06-2010, 12:47 AM   #4
choleaoum
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A leak in the manifold would cause that clicking noise? Where would I spray brake cleaner? I don't have the throttle body hoses hooked up to anything because I do not know where they go.. I tried to read the manual but it doesn't say anything besides "engine coolant hose" wtf? lol.
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Old 10-06-2010, 10:42 AM   #5
jkopinga
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Yes the engine coolant is running through the throttle body to keep it warm and to prevent it from sticking open when it's freezing outside. I do not have those problems here in Taiwan and thus I remove those lines and connect them together so coolant just goes through. !! DO NOT TRY THIS IN AN AREA WITH FROST !! You won't be the first to find yourself going WOT and keeping WOT even when you jump off the throttle!!

The brake cleaner is to find WHERE it leaks. When the brake cleaner is sucked up through the leak the engine will respond with rising revs.

Cheers,

Jasper Kopinga
CS Racing
Taiwan.
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Old 10-06-2010, 12:08 PM   #6
choleaoum
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Yeah, I want to do things properly, can anyone shoot me a picture to how the lines go into the throttle body?
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Old 10-06-2010, 05:50 PM   #7
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It looks like your Y pipe that the factory head breathers are supposed to be connected to are left open. It's that long pipe with 3 openings attached to your IC. Unless this is intentionally left this way it's likely your problem.

Mike
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Old 10-06-2010, 06:47 PM   #8
choleaoum
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I don't believe it's the breather hoses that are causing the problems, they are hooked together as a T but I will try to hook them back up to the intercooler. I highly doubt it will fix the problem though, the boost solenoid also isn't hooked up (hose-wise)
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Old 10-06-2010, 07:46 PM   #9
choleaoum
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Quote:
Originally Posted by GrimmSpeed View Post
It looks like your Y pipe that the factory head breathers are supposed to be connected to are left open. It's that long pipe with 3 openings attached to your IC. Unless this is intentionally left this way it's likely your problem.

Mike
Thanks Mike, I routed the hoses back into the intercooler, and put disconnected the MAF sensor and now the noise went away. So with the MAF disconnected it revs at 1325 rpm, and the car temperature went to alittle below the middle line, that's normal right?

So the MAF sensor is dirty and needs to be cleaned or is it faulty? I connected the maf sensor back up and it shut right off!
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Old 10-06-2010, 09:06 PM   #10
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Quote:
Originally Posted by choleaoum View Post
Thanks Mike, I routed the hoses back into the intercooler, and put disconnected the MAF sensor and now the noise went away. So with the MAF disconnected it revs at 1325 rpm, and the car temperature went to alittle below the middle line, that's normal right?

So the MAF sensor is dirty and needs to be cleaned or is it faulty? I connected the maf sensor back up and it shut right off!
you have a leak, find it
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Old 10-06-2010, 09:10 PM   #11
choleaoum
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Quote:
Originally Posted by Nuke209 View Post
you have a leak, find it
So you're telling me that a leak is whats causing the MAF to act up? The minute I plug the MAF back up it shuts right off. Tried cleaning it, didn't work still shut right off.
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Old 10-06-2010, 09:19 PM   #12
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Quote:
Originally Posted by choleaoum View Post
So you're telling me that a leak is whats causing the MAF to act up? The minute I plug the MAF back up it shuts right off. Tried cleaning it, didn't work still shut right off.
You didn't stick anything in there did you? There are tiny resisters in the maf sensor that break very very easy
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Old 10-06-2010, 09:24 PM   #13
choleaoum
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Originally Posted by sense of nature View Post
You didn't stick anything in there did you? There are tiny resisters in the maf sensor that break very very easy
I didn't stick or do anything to the MAF sensor besides spray it with brake cleaner. Althoooough, I did drop it as I was pulling out because it was pissing me off (this was right now trying to clean it). It fell right off the radiator support so that's what about 3 feet? The minute I plug the MAF sensor it started clicking all over the engine again, wierd huh.
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Old 10-07-2010, 12:13 PM   #14
choleaoum
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bump maf sensor plugged in makes wierd noises!
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Old 10-08-2010, 11:32 AM   #15
choleaoum
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bumpity bump bump it idled normal and better once I plugged the bov back in, I don't believe I have anymore vacuum leaks.. but the maf was clicking for a bit, maybe it's the throttle body just clicking flying open? i'm not even sure.. but I have also reason to believe the throttle body cable has a toll in this. the previous owner had it just dangling there so that also might be causing the crazy jumping.
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Old 10-09-2010, 04:03 AM   #16
choleaoum
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bump what could explain the clicking..
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