NPP fuse pull trick/result
Team Owner
Joined: Mar 2005
Posts: 20,933
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From: salem OR
with power to pin 4! Ground to 1 and 2
Last edited by 3 Z06ZR1; May 26, 2014 at 11:07 PM.
Racer
Joined: Aug 2005
Posts: 304
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From: Shelton CT
When you ground pin 2 does it stay closed? Seems to me like "12V to 4 and ground to 1 and 2" isn't the same as "12V to pin 4, ground to 1, tap 2 to ground."
In the original test, did it stay closed when 2 was grounded?
Ed
I have NPP on an A6. My issue is the V4/V8 thing, but that's another thread... interested in this on a purely "hmmmmm" level!
Racer
Joined: Aug 2005
Posts: 304
Likes: 4
From: Shelton CT
I don't know if you made any additional progress on the relay setup, or just decided on a switch.
I was wondering if the fuse box cover is orderable as a separate part, and its cost. I was thinking about some relay experiments, or just mounting a SPST switch right on the cover. Figured if I bought a second cover, I could make (grometted, watertight) holes, etc. and still have the original for service dept visits.
Thanks,
Ed
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
Ed, I'm using a grommet (or two) to do this, as I already have a wire running for illumination back from one of the HID fuses. Using that until such time as I can find a low-level 12v signal inside the cabin that signals illumination/lights on.
I will get that information for you shortly.
I will get that information for you shortly.
Le Mans Master
Joined: Nov 2004
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From: Cape Coral FL
Thanks for the info. Can the C7 be done like the C6 by adding a toggle switch to turn on off when ever you want? I did my last 3 C6s this way. Only cost around 15 bucks depending on what switch you use. Like this?
http://forums.corvetteforum.com/c6-c...with-pics.html
http://forums.corvetteforum.com/c6-c...with-pics.html
Last edited by DRLC5; Jun 16, 2014 at 04:42 PM.
Tech Contributor
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From: Saint Louis MO
St. Jude Donor '14-'15
No, it's a little different here. The switch we are working with on fuse 41 will allow the valves to stay open throughout the entire RPM range.
The valves, themselves, cannot be controlled by a switch directly. That's a project going on for the non-NPP folks at the moment.
The valves, themselves, cannot be controlled by a switch directly. That's a project going on for the non-NPP folks at the moment.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
It revolves around a PWM signal instead of just hot/ground (SPST).
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Burning Brakes
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Tech Contributor
Joined: Jan 2006
Posts: 4,761
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From: Saint Louis MO
St. Jude Donor '14-'15
See this:
Second, I've already explained that it's not a switched hot/ground, but rather a PWM signal controlled by the CCM (Chassis Control Module) that actually opens and closes the NPP valves, and constantly monitors their position.
Again, we had quite a bit of thought going into the other thread on how to accomplish a non-NPP to NPP swap.
I can't argue with you if you don't know what I'm talking about though, so I hope that explains it. If this were the C6, I'd be with you on it, but this works quite differently than those valves did.
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
You're in the wrong thread, then - we have that discussion going in the other thread: http://forums.corvetteforum.com/c7-t...-npp-help.html
The NPP valves expect a PWM signal, not just hot/ground (SPST). If it was really that simple, we would have had this done months ago.
The NPP valves expect a PWM signal, not just hot/ground (SPST). If it was really that simple, we would have had this done months ago.
Burning Brakes
Joined: Sep 2011
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You're in the wrong thread, then - we have that discussion going in the other thread: http://forums.corvetteforum.com/c7-t...-npp-help.html
The NPP valves expect a PWM signal, not just hot/ground (SPST). If it was really that simple, we would have had this done months ago.
The NPP valves expect a PWM signal, not just hot/ground (SPST). If it was really that simple, we would have had this done months ago.
See, I don't think there is another subject because I am not trying to use the ECM or the CCM either one
.
Last edited by B Stead; Jun 18, 2014 at 02:37 PM.
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
Just gave you the correct thread - he's doing the same thing you're trying to do. Non-NPP car, trying to use NPP valves.
I don't know how else to explain it, as there isn't any other way. PWM. Not SPST.
When we tried SPST 12v the valve worked for a few moments and then nothing. There is a motor control PWM - the are little PWM controllers that may end up working (and they're around $10 each plus the box you'd need to build them in).
Right now, it's still very DIY to do what you want to do. Cutouts would have been a far simpler solution, but I respect wanting to use the factory system. The only thing holding you back is the new control 'mechanism' (really just added monitoring).
I don't know how else to explain it, as there isn't any other way. PWM. Not SPST.
When we tried SPST 12v the valve worked for a few moments and then nothing. There is a motor control PWM - the are little PWM controllers that may end up working (and they're around $10 each plus the box you'd need to build them in).
Right now, it's still very DIY to do what you want to do. Cutouts would have been a far simpler solution, but I respect wanting to use the factory system. The only thing holding you back is the new control 'mechanism' (really just added monitoring).
Burning Brakes
Joined: Sep 2011
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[QUOTE=Theta;1587163639]Just gave you the correct thread - he's doing the same thing you're trying to do. Non-NPP car, trying to use NPP valves.
I don't know how else to explain it, as there isn't any other way.
QUOTE]
No, if the C7 didn't come with NPP then it can be set up like a C6 NPP
.
I don't know how else to explain it, as there isn't any other way.
QUOTE]
No, if the C7 didn't come with NPP then it can be set up like a C6 NPP
.
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
You know, I've tried to be helpful, but it's not getting through... Best of luck with the C7 NPP valves without a PWM signal. Please do read the other thread.
Burning Brakes
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Last edited by B Stead; Jun 18, 2014 at 02:47 PM.
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
This isn't remotely similar to the C6 design, and this actuator doesn't operate like the C6 valves did. Perhaps that's what's making this difficult to explain to you.
Burning Brakes
Joined: Sep 2011
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Now I just want to put a C6 NPP system on it.
I would want to use the C7 BB Fusion muffler system with the correct type of C6 NPP valves installed on it
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Last edited by B Stead; Jun 18, 2014 at 03:08 PM.
Tech Contributor
Joined: Jan 2006
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From: Saint Louis MO
St. Jude Donor '14-'15
The other thread is exactly what you're looking for in that case: http://forums.corvetteforum.com/c7-t...-npp-help.html
