Double throttle diaphragm
08-22-05, 09:35 AM
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Double throttle diaphragm
I was getting ready to put the throttle body back on my car yesterday and thought I'd check the operation of the double throttle diaphragm - dead! I went to my spare throttle body - dead! I just checked with the dealer, and this thing is a whopping $90!
Has anybody ever taken one apart and repaired it?
Has anybody ever taken one apart and repaired it?
08-22-05, 09:48 AM
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What's normal? For it not to work?! If I apply vacuum, it doesn't budge and I can hear air passing through it.
Just about every part of the throttle body is available seperately.
Just about every part of the throttle body is available seperately.
08-22-05, 09:52 AM
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I'd wire open or remove the secondary double throttle all together.
It's main job on your NA was to keep you from WOT on a cold engine.
You already know about that.
Just make sure anyone you loan it to knows it also.
It's main job on your NA was to keep you from WOT on a cold engine.
You already know about that.
Just make sure anyone you loan it to knows it also.
08-22-05, 10:09 AM
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On a non turbo car the double throttle is spring loaded to the wide open position when the car is warm/hot or the diaphram is busted. Just FYI for whoever. Turbo's are different.
08-22-05, 10:20 AM
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Uh, I dunno what kinda car you got, but I know on turbos, the thermowax prevents them from opening so you don't do anything stupid with the engine still cold. :P
-Ted
-Ted
08-22-05, 10:24 AM
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Originally Posted by HAILERS
On a non turbo car the double throttle is spring loaded to the wide open position when the car is warm/hot or the diaphram is busted. Just FYI for whoever. Turbo's are different.
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08-22-05, 10:28 AM
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Originally Posted by RETed
Uh, I dunno what kinda car you got, but I know on turbos, the thermowax prevents them from opening so you don't do anything stupid with the engine still cold. :P
-Ted
-Ted
The turbo is different. I kinda remember writing that in my post above.
All automatics should be ignored. If we do maybe people will forget that MAZDA mistake.
08-22-05, 10:30 AM
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Originally Posted by HAILERS
All automatics should be ignored. If we do maybe people will forget that MAZDA mistake.
It's an NA NA....Normally Aspirated, and Non Automatic!
08-22-05, 10:42 AM
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Here's a Jpg of your normal, non-turbo double throttle diaphram and fully spring loaded open secondary throttle plates. I've never ever found a working double throttle diaphram in a wrecking yard in the last five years and I've better things to buy with nintey bucks than a diaphram.
08-22-05, 11:54 AM
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I ain't gonna be buying a new one, that's for sure. A hub or ACV at $500 sounds like an absolute bargain compared to this!
I guess I just won't worry about it, but I will try to take apart my spare just for kicks. Besides, I can't remember exactly how long the secondaries are held closed (it's in the FSM), but it's not very long. Seconds, not minutes, IIRC.
I guess I just won't worry about it, but I will try to take apart my spare just for kicks. Besides, I can't remember exactly how long the secondaries are held closed (it's in the FSM), but it's not very long. Seconds, not minutes, IIRC.
08-22-05, 01:52 PM
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Originally Posted by johnnyg
Besides, I can't remember exactly how long the secondaries are held closed (it's in the FSM), but it's not very long. Seconds, not minutes, IIRC.
08-23-05, 01:23 AM
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Originally Posted by Sideways7
Just wire it open and remember not to floor it as soon as its turned on. I did it and it runs fine.
08-23-05, 08:46 AM
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In other words....there's absolutely nothing I need to do, and pretty much nothing to worry about.
I'm still gonna disassemble and try to fix the spare I have though. That's just me
Thanks y'all!
I'm still gonna disassemble and try to fix the spare I have though. That's just me
Thanks y'all!
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