[Miata] 1991 Miata Running/Starting/ Check engine light?

[Keith Tanner]

>From your description, I suspect you have trouble getting power to
your ECU. It could be a dodgy main relay (in the fusebox under the
hood) or it could be a wiring problem. I'd start by popping the cover
off the relay and seeing if it's flipping over when you don't get the
light.

Keith

On 8/30/07, Charlie (Kwik Kopy) <charlie at kwikbusiness.com> wrote:
>
>
> Hi everyone:  I'm new to the list.  I really would appreciate any help you
> can give me on this weird problem I'm dealing with.
>
> I have a 1991 Miata with 58K I purchased this year.  The previous owner
> turned it into a kit car and added larger tires/rims and racing suspension..
> so I'm not totally sure what is original or not... but I think my problem
> should be fairly basic.
>
> I'll give more description below.. but the bottom line is:  My car starts
> nicely when the check engine light is on when I turn the key.  If the check
> engine light does not come on, it turns over fine but it just cranks and
> cranks and sounds like it gets no fuel.
>
> More detail:
> The car did this about 2 months ago and I checked all electrical
> connections.  After I did so it ran flawlessly for 2 months.  I did not
> start the car for about 10 days and the problem is back again.  When it does
> start it runs nice for 1 - 20 minutes and then shuts down with no warning.
> I mean just goes dead at any speed.  Also.. it may be my imagination.. but
> I could swear I hear a bit of a hum when the check ignition light come on
> with the starter and I don't hear it when the car does not start.  So, I'm
> thinking fuel pump.  But.. if it's the fuel pump why is it I could not start
> this thing for two weeks, then it runs flawlessly for 2 months?  Is there an
> electrical connection in the engine area I that could be loose?  Because
> that is where I checked connections to get it working the first time.
>
> I don't have an owner's manual so I don't know what exactly the check engine
> light represents during the ignition process.  They Haynes manual does not
> tell me either.
>
> THANKS!!!!!!!!!!
>
>
>
>
>
> Charlie
> 1991 Miata: 58K
> Crystal Lake, IL
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