[MR2] 88sc No Start - Code 12 - WTB: 4agze igniter
dkchal at datasync.com
Mon Apr 12 23:07:26 EDT 2010
The distributor has two pickup coils. There is a test for them in the BGB which I do not have with me at the moment. The 4A-GZE is different from the 4A-GE. If either pickup dies, it will cause the symptoms you're experiencing. Or if the wires to/from them have an open.
----- Original Message -----
From: Ted Volkman
To: Ray Benoit
Cc: MR2 List
Sent: Monday, April 12, 2010 3:16 PM
Subject: Re: [MR2] 88sc No Start - Code 12 - WTB: 4agze igniter
I'll swap out the coil wire and take a look at the distributor.
Something I forgot to add, the tach does not move while cranking. It
is my understanding that the tach is driven of a signal from the
igniter. Can anyone confirm or deny this?
On Mon, Apr 12, 2010 at 3:02 PM, Ray Benoit <spyderay at gmail.com> wrote:
> OK. Sounds reasonable, but that doesn't mean you shouldn't still try
> subbing the coil wire and cleaning the distributor.
> My '91 T spent 3 days in diagnosis at a dealership (that sponsored/supported
> a competition MR2), had all kinds of diagnostic equipment connected to it,
> had up to 4 mechanics under the lid at once, had telephone consultation from
> the distributors training chief, and still couldn't diagnose a bad coil wire
> (it passed the static resistance test).
> On Mon, Apr 12, 2010 at 2:15 PM, Ted Volkman <tvolkman at gmail.com> wrote:
>> Cap, rotor and wires are all pretty fresh (~5k miles). I pulled the
>> primary coil wire and both ends were clean and dry. I tested the
>> output of the coil by hooking my timing light (inductive) to it.
>> On Mon, Apr 12, 2010 at 1:16 PM, Ray Benoit <spyderay at gmail.com> wrote:
>> > Ted,
>> > If you can beg, borrow, or steal an oscilloscope, tracing the ignition
>> > pulses from the ecu to the coil primary should show you exactly where
>> > the
>> > problem is.
>> > Also, you didn't mention how you tested the coil output. Replacing the
>> > coil
>> > wire to the distributor and taking care that both terminals are clean
>> > and
>> > dry (as well as the distributor cap and internals) might be worth
>> > trying.
>> > The high voltage could be leaking to ground anywhere along this path
>> > and
>> > make it appear that the coil is not putting out.
>> > Good luck.
>> > ray
>> > On Sun, Apr 11, 2010 at 4:33 PM, Ted Volkman <tvolkman at gmail.com> wrote:
>> >> I replaced the radiator on my 88sc and now I think I need an igniter.
>> >> Car was running just fine. I replaced the radiator, then filled the
>> >> cooling system at the water neck in the engine bay. I was a bit
>> >> careless filling the water neck and doused the igniter. Now the car
>> >> will not not start. I have fuel, but no spark, and a code 12. Code
>> >> 12 is either the distributor, igniter, or ecu. The car cranks just
>> >> fine, but there is no spark coming from the coil. I opened the
>> >> igniter. It was slightly damp, but definitely not flooded. I cleaned
>> >> the solder joints with electronic contact cleaner and the contacts on
>> >> the connector then allowed it to dry, but still no luck.
>> >> I guess my ecu could have coincidentally died while I was changing the
>> >> radiator, but I highly doubt it. The fact that there is no spark
>> >> coming from the coil means the problem is before the distributor,
>> >> which leaves the igniter.
>> >> So, does anyone have an igniter they would be willing to part with?
>> >> Part # on the igniter is 89620-12270. Part # on the igniter and coil
>> >> assembly is 19070-15120. FYI, this igniter and coil were also used on
>> >> 88-89 V6 4runners.
>> >> Or if anyone has any other ideas/ suggestions, I'd love to hear them,
>> >> but I'm pretty sure it is the igniter.
>> >> Thanks
>> >> --
>> >> ted
>> >> 02 is300 L-tuned, 5 speed
>> >> 94t supra 6 speed, 67mm, aem
>> >> 93t mr2 gen3, t3/t4, 264s, aem
>> >> 88sc mr2
>> >> 98 honda vfr800
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