Hi Guys. Sorry for bad English.
May i`m ask some question?
i`m have a Nissan Skyline 1982 year.
i`m buy new turbo and dizzy for it. i`m start the engine. But, after 20-30 minutes working engine will stop. No spark. i`m check ignition system and found broken(burned out??) power transistor on ignition coli. i`m replace it. His burn again. i`m replace coil (low resistance from honda). transistor burns again. why?
ECU use a fixed dwell time.
Can i`m use a VB927 from ST as ignition coil driver?
vb927 datasheet. http://www.datasheetcatalog.com/datashe ... B927.shtml
skyline HR30 Coupe.
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Re: skyline HR30 Coupe.
Now THAT is a real car
Owner / Builder: 1983 Mazda Cosmo 12at (1200cc 2-rotor turbo) coupe [SPASTK]
165hp @ 6psi standard - fastest production car in japan Oct 82
165hp @ 6psi standard - fastest production car in japan Oct 82
Re: skyline HR30 Coupe.
Sounds like you have a snubber problem, but it's hard to say with such a brief description. If it's an inductive spike problem, you'll blow this driver chip as well. Check out these wikipedia articles.
http://en.wikipedia.org/wiki/Snubber
http://en.wikipedia.org/wiki/Transient_ ... sion_diode
http://en.wikipedia.org/wiki/Flyback_diode
One way to do it with out the extra snubber component is to use a PIP3104. It has over-voltage protection that bias's the input when you try to do more than 60V from source to drain. This will keep the voltage spikes down to 60V.
http://en.wikipedia.org/wiki/Snubber
http://en.wikipedia.org/wiki/Transient_ ... sion_diode
http://en.wikipedia.org/wiki/Flyback_diode
One way to do it with out the extra snubber component is to use a PIP3104. It has over-voltage protection that bias's the input when you try to do more than 60V from source to drain. This will keep the voltage spikes down to 60V.
Re: skyline HR30 Coupe.
Thank you very much. I have read and try to resolve this problem.
Re: skyline HR30 Coupe.
Jared, you can't use those FETs for ignition, at least, you shouldn't. The flyback spikes are much more than 60V and it will do bad things to your spark and/or kill the drivers.
I don't know about vb927, but vb921 has VERY limited capability to drive anything much. They burn out if you sneeze near them. Get some OEM ignitiors with balls and try those.
I don't know about vb927, but vb921 has VERY limited capability to drive anything much. They burn out if you sneeze near them. Get some OEM ignitiors with balls and try those.
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n00bs, do NOT PM or email tech questions! Use the forum!
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Re: skyline HR30 Coupe.
last time i`m use a BU941ZPF. It`s have built in protection from othervoltage.
but transistor will died again. hmm...
maybe ecu uses some feedback for dwell time? it`s a jdm car and i`m don`t have any documentation for it.
but transistor will died again. hmm...
maybe ecu uses some feedback for dwell time? it`s a jdm car and i`m don`t have any documentation for it.
Re: skyline HR30 Coupe.
I agree with Fred about the use of external drivers. Use your drivers to drive an external OEM driver. I beleive this mazda is Freds.
http://i50.photobucket.com/albums/f323/ ... 0_4471.jpg
That link came from this thread.
http://www.diyefi.org/forum/viewtopic.php?f=3&t=16 (DSL beware)
Notice the plate attached to the firewall.
http://i50.photobucket.com/albums/f323/ ... 0_4471.jpg
That link came from this thread.
http://www.diyefi.org/forum/viewtopic.php?f=3&t=16 (DSL beware)
Notice the plate attached to the firewall.
Re: skyline HR30 Coupe.
i`m swap ignition coil and problem will gone. maybe short in primary coil?
Re: skyline HR30 Coupe.
Yeah, that's entirely possible. Glad you got it fixed! :-)
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
Re: skyline HR30 Coupe.
after i`m swap coil and wires, problem is gone. thank you!