2g Manifold capacitor part?

[my_gst95]

Well, i'm not 100% sure its a capacitor, but... There is a silver round piece that looks like gets grounded on the intake manifold of a 2g. I did a 6bolt swap and must not have tighten it down properly, and because it was lose, it was causing my IGN fuse to constantly blow. I removed it and the car runs fine now. What is it for and can I run without it?

my_gst95

 

[CanadianTSi]

I think it cancels out noise or vibration.

 

[myblack98gst]

dont hold me to this, But I have heard in the past that is there to cancel igntion noise in the radio.

Maybe not though

 

[Staytuned]

I was told it was there to supress RFI.

 

[my_gst95]

Wow, 5 responses, 5 different ideas. Whichever is correct, I wonder if it hurts performance with it disconnected? I haven't ordered DSMLink to log yet, so I can't monitor anything on my 2g. If it supresses noise/frequencies, does it effect ignition timing adversly?

my_gst95

 

[SwiftKidGSX]

If you’re talking about this little silver thing that is cylindrical in shape and only measure about an inch in length...that right there is so it cancels noise to your radio. And not having it plugged won’t have nothing to do with your ignition fuse blowing...trust me on this...I had a big problem with that fuse blowing out and turned out to be my sun roof.

 

[bastarddsm]

It is called a condensor it is there to absorb the large amount of voltage that a large inductor will create when the current throught is changed rapidly. I would make sure it is on there for your ecu's sake. basically V=L (di/dt) so say your coil has an inductance L of .5 henri's and it has a resistance of 3 ohms, it will be flowing 4amps through it when it is flowing. sudenly this current is shut off. (very large di/dt) say it takes .001 seconds for the current to goto 0. then di/dt is 4/.001 which is 4000 amps per second so if we put this into our earlier equation we ha V=.5*4000. so V=2000 volts presented to the output transistor on your ecu. coincedently those only are rated for around 100v obviously it won't last long like this.





have a nice day.

 

[Da Dymer]

I recently had the same problem...a little silver cylinder with a wire that attaches to it, and has like a phone jack connection at the end.........well anyway mine broke apart and the car wouldnt make any spark.....yet when i held it together the car would start and run fine......i also had trouble with it blowing fuses whenever it got disconnected......i took the part to an eagle dealership and a mitsu dealership and nobody was able to tell me wat the hell the part was called,,,,,,on it (if its the piece im thinkin of) it should have L035-1...but that number doesnt match up anywhere.........anyway to make a long story short, i went to a junkyard, found the part, plugged it in, i never had a problem with spark or igniton since

 

[my_gst95]

Cool, Da Dymer Now I don't feel so isolated. Thanks for the input guys, I think I'll just replace it with a new one.

my_gst95

 

[MichaelSuch]

Can anyone post a picture of what a '90 Tach Noise Filter looks like? I bought a '90 GSX, the tach doesn't work and tried to look for it on the back of the intake manifold but I never seen it, plus I don't really know what I'm looking for. I'm fairly certain whatever it looks like it's not there, so I'm going to go to some junk yards tomorrow and look, but I haven't a clue what it looks like. So does anyone have a picture of it? I searched but didn't find much about it.

 

[tunethis]

It is a small black device about an inch or so long with a pigtail harness attached. It is bolted onto the black intake manifold vacuum hose port support brace (the thing that all the emission/evac canister vac hoses attach to). I has 1 screw going through it. It must be attached to metal in order for it to properly function, it grounds itself out.

This is not my picture but, I found it in the galleries. See the black piece attached onto the bottom of the intake manifold? That's the brace I mentioned. The tach noise sensor is the black thing attached to it with the pigtail harness.

Img 0196 - DSMtuners Gallery

 

[MichaelSuch]

Thank you very much, this should be sufficient.

 

[steve]

I think that picture is the tach adaptor on the coil pack, also a unique 90 part. Here's another view of it on the 90 coil pack on the bottom and not on the 91+ coil pack above.

The noise filter looks like this.

 

[90BlackGSX]

Is there any place I can buy a noise filter. Is there any other names for this other then noise filter. Thanks in advance

 

[half-cocked]

I got one from a dealership not to long ago, they are fairly cheap.

 

[steve]

Is there any place I can buy a noise filter.

As far as I know you have three choices, Dealership, Classifieds, Junk Yard.

My best guess on the part number is MB542494.

 

[90BlackGSX]

Thanks for the info. I ended up calling the dealership today and its only going ot cost me 20 or so dollars.

 

[wrknmike924]

Hello to all. To make things short and simple, my 420a motor got waterlocked, i reBUILT it. As in wiseco pistons, eagle rods and so on. Installed the motor a week ago and drove for 70miles flawlessly besides an oil leak coming from where the block and cradle hold the crank. Pulled it back out, resealed in, installed new orings and fired her up again. No leaks ran great, drove it to my appt 30miles down the road with no problems what so ever, turned it off, came back to start it, and it just turned over. It has no igniton whatsoever. Did minor testing in the dark. There is no power to the coil. There were no cel's when she ran, and i am running out of ideas. Only thing that is not connected is a capacitor that sits on the front of the motor. Altho i didnt have any problems the first 100 miles i drove it. Please help. Very stumped. Will do further testing tonight. Thanks!

 

[silvreclips]

You dont need that. Its suppose to help keep engine noise from interfearing with the radio. May want to check the wires and make sure the EGR pipe didn't melt them.

 

[wrknmike924]

See i didnt think it did. But looking at wireing diagrams it is connected to a wire that runs to the coil. And i have been up and down every wire in that thing and cant find anything. My next step is to pull back every plastic cover on the wireing harness.

 

[Defiant]

It's not only for radio noise suppression. It's for general EFI and pulse absorption, which in some cases can cause interference in the ECU and other control devices.

 

[wrknmike924]

Is anyone actualy running there car without one right now?

I did some more testing last night and found a few fried wires on the egr tube. Fixed all and fixed a wire running to the coil that was almost in half. Car fired up. Did a little more cleaning up with moving wires away from the tube and what not. Fired up again. left it running and as i installed the intake she cut off. Wouldnt start back up again all night. Must be missing a wire somewhere.

Also on the camshaft pos sensor, where the connector goes in it normaly has a plastic peice on the connector to make a good seal. Its not there so the connecter kind of jiggles a little. Could that cause it?

 

[bullettdsm]

Is anyone actualy running there car without one right now?

Yes, two of them

Also on the camshaft pos sensor, where the connector goes in it normaly has a plastic peice on the connector to make a good seal. Its not there so the connecter kind of jiggles a little. Could that cause it?

Posssible, if you're losing connection. More than likely somewhere in the wire loom by the EGR tube.

MB

 

[wrknmike924]

Finally.

Had a few problems but i got em figured out. After purchasing the camshaft position sensor and that not fixing it, it turns out the VSS was causing it not to start. I unplugged it started right up. Plug it in, no go. I replaced the sensor with a spare i had at the house and all is fine now. I believe there was a short in the VSS itself because there was no problem with the wiring. Very odd. It was one of the last things i would check but thats what she was. Just for future reference, now we know!

 

[jonjon8585]

Does anyone know where you can buy a new one? How many wires are supposed to be coming off it? Where do they go?