The only wiring diagram I have left here is for a '93 and it does power the
coils & igniter via the engine fuse. Where do the '94 coils get their
power?
----- Original Message -----
From: "derf" <[email protected]>
To: "Ray Ayala" <[email protected]>
Cc: "Bill Cardell" <[email protected]>; "Miata Power List"
<[email protected]>
Sent: Tuesday, June 07, 2011 6:40 PM
Subject: Re: 94 Dies, What's up?
But the fuse that blew only feeds the main relay, fan relay, and
diagnostic module.
Flaky coil pack would explain why twitchy tach seems to mellow out
once the car warms up.
I should have an extra coil pack somewhere if I didn't give it to
someone who needed one.
On Tue, Jun 7, 2011 at 8:33 PM, Ray Ayala <[email protected]> wrote:
On a '94 the tach signal comes from the coil packs (with built-in
ignitors).
A twitchy tach is often caused by an ignitor on it's way south but in
this
case if there's a wiring problem between the ECU and the coil packs then
an
ignitor can potentially be left on way too long ... and that could draw
enough current to blow the fuse.
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