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Capacitor rating (the one that attaches to the slave cylinder)

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Old 03-02-04, 08:14 PM
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can't u use a diode?
Old 03-02-04, 09:43 PM
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Originally posted by WAYNE88N/A
J-Rat, with the wire broke, or you getting any more radio noise? Or ignition problems?
Well, thats the thing. I dont know how long its been broke.

If I can replace it, I can make an assesment of any differences in driveability.
Old 03-02-04, 09:50 PM
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It's much better to have the wire broken than to have it short out, that would cause a whole set of wierd problems; that cap ties into the main relay,coils, & injectors per the FSM wiring manual
Old 03-02-04, 10:08 PM
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well, if you want to get technical... Everything ties in one way or another..
Old 03-02-04, 10:48 PM
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Okay, this might sound like a rookie question, but I got a .5uF 50VDC cap from work. Thats 3/100ths off. Any idea if thats gonna work?
Old 03-02-04, 11:00 PM
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Umm theres like two different caps I think you'll find, one that J-Rat is talking about that bolts to the slave cyl, and one that bolts to the chasis, near the coils, they are two different circuits, the one that bolts to the salve cyl no doubt has alot to do with the oil pressure sensor, since it runs in parralell to it, the other is _probably_ there to supply a more consistant voltage to the coils.
Old 03-02-04, 11:40 PM
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f it makes any difference, my is broken and my oil pressuse gauge works. i donno if it's a s5 thing, because my friends is broken and his oil pressure is negative
Old 03-03-04, 12:04 AM
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Originally posted by J-Rat
Correct me if I am wrong, but shouldnt caps at least test resistance as they are charging?

in a DC circuit it is an open circuit. a cap is kinda like holding 2 wires really close but not touching.

only AC goes through it.

the ohms being proportional to the AC freq.
Old 03-03-04, 06:33 AM
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Originally posted by White_FC
Umm theres like two different caps I think you'll find, one that J-Rat is talking about that bolts to the slave cyl, and one that bolts to the chasis, near the coils, they are two different circuits, the one that bolts to the salve cyl no doubt has alot to do with the oil pressure sensor, since it runs in parralell to it, the other is _probably_ there to supply a more consistant voltage to the coils.
They are identical in specs and markings.

I've heard that the one near the trailings coils is to supress noise from the switching between the T1 and T2 coils.



-Ted
Old 03-03-04, 01:43 PM
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Next dumb question. Anyone source these?
Old 03-03-04, 02:33 PM
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You're looking for a 0.47uF 250V polar cap? http://www.digikey.com. Also Rat (radio) Shack, any local electronics store, old TVs, etc. But any value that is approximate will work fine.
Old 03-03-04, 02:48 PM
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Originally posted by J-Rat
Next dumb question. Anyone source these?
I posted a digikey part number eariler. Go to www.digikey.com and type in that part number.
Old 03-03-04, 05:58 PM
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Sweet! Good info! Thanks!
Old 03-03-04, 06:26 PM
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My cap is gone from the slave cylinder, I have an aftermarket oil pressure gauge and my stock one in the cluster. Both read the same pressure.
Old 03-04-04, 08:13 AM
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If you're trying to test a cap, you should be able to see it discharge with the voltmeter.

The Haynes manual calls these 'Condensors', and like some have already said, they're to reduce noise in electrical systems. I think the one on the ignition coils is to reduce noise to the tach, and the one on the oil pressure sending unit for the oil pressure guage. When I got my FC, the oil guage condensor was just kind of hanging out in the engine bay, attached to nothing. I didn't know where it was supposed to ground to, so I bolted it to the firewall When I replaced my clutch slave cylinder, I tried to move it, and broke the wire. It didn't make a damn bit of difference
Old 01-30-08, 04:31 PM
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would this part not being there or not gettin a connection affect the car not starting?
Old 01-30-08, 06:09 PM
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Originally Posted by t2josh
would this part not being there or not gettin a connection affect the car not starting?
no
Old 01-31-08, 12:03 AM
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Old 01-31-08, 04:52 AM
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I've got an s4 T2, and the capacitor thing broke for my stock oil pressure gauge but I don't have the stock oil pressure gauge even hooked up. Now my stock gauge just maxes out when I turn on the car. Weird.
Old 01-31-08, 10:02 AM
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Originally Posted by arghx
I've got an s4 T2, and the capacitor thing broke for my stock oil pressure gauge but I don't have the stock oil pressure gauge even hooked up. Now my stock gauge just maxes out when I turn on the car. Weird.
That is caused from a bad sender and no condenser, or the wire is shorted to ground.

It is burning up your gauge the longer it is at full travel
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