intermittent stalling problem

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05-02-2007, 05:57 PM

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intermittent stalling problem

I have a problem with my miata stalling intermittently. It only does it when it's cold, and it does it within 200-300 feet after I start driving down the road. It will start up fine, it will be driving fine, then just die. Then I have to crank it for about a minute, then it runs rough, smooths out and then drives perfect. But it does it maybe once out of every 6 cold starts. It's as if the fuel pump just quits or there is a bunch of air in the fuel line. My turbo system is very basic, MSD box for ignition control, rising rate regulator, BEGI, and stock fuel pump. Only running 6 pounds of boost. Any ideas what could be going on?

05-02-2007, 08:16 PM

miataspeed1point6

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Check for any loose plugs or grounds. My AFM wiggled loose one time, and last week my coil plug came off. (My tach was CRAZY and it ran like ****.) If something is loose it might pop on and off by itself, happened to me before.

05-02-2007, 08:32 PM

supersuk

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Sounds like a symptom I had when my CAS was goin bad. Then one day it just kept on dying. Wouldn't start. Apparently the transistor in the CAS goes bad and it either sends out a weak or no signal. One symptom is that the voltage coming out of the CAS (forget which wire) is really low. Something to look at.

Last edited by supersuk; 05-02-2007 at 08:57 PM.