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Amedee
Amedee, Mazda Technician
Category: Mazda
Satisfied Customers: 25846
Experience:  ASE Technician advanced level specialist. Wisconsin certified emissions state inspector
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My 1994 Miata will start up from the coldstart, and run two

Customer Question

My 1994 Miata will start up from the coldstart, and run for about two seconds then just die. No sputtering, and I just replaced the crank angle sensor to see if that was the issue but it was a no go
Submitted: 1 year ago.
Category: Mazda
Expert:  Mike V. replied 1 year ago.

Hi there,

Was there any service or anything done to this prior to this happening?
Will the car start right back up after it stalls?

Customer: replied 1 year ago.
No service done just prior, will not start up again after stalling from cold start
Expert:  Mike V. replied 1 year ago.

Ok

Try unplugging the mass air flow sensor and see if it will start and idle for you.

Please let me know.

Customer: replied 1 year ago.
Same result
Expert:  Mike V. replied 1 year ago.

Ok

Can check for spark or fuel when it won't start?

Possibly spray some carb cleaner into the throttle and crank it to see if it will fire

Customer: replied 1 year ago.
Fuel and spark
Expert:  Mike V. replied 1 year ago.

can you feed it carb cleaner or starting fluid and keep it running?
Also, have you tried flashing any codes out of it?

Customer: replied 1 year ago.
Carb cleaner didn't work
Customer: replied 1 year ago.
Any other options before I have to go out and buy a code reader
Expert:  Mike V. replied 1 year ago.

Code reader isn't going to work on it, it's to old for OBDII.

If you have spark it should run on the carb cleaner...Makes no sense to be honest.

HERE is a link for flashing the codes using the check engine light.

See if there is anything stored.

Doesn't seem like you have spark if it won't run off the carb cleaner.

Customer: replied 1 year ago.
I pulled each one of the plug wires and made sure they had spark. Spark. No vroom.
Customer: replied 1 year ago.
What's the MIL
Customer: replied 1 year ago.
I've connected the ground and the ten already in case it was a timing issue
Expert:  Mike V. replied 1 year ago.

that's the check engine or service engine soon light.

Once it starts flashing you should see long and short flashes. Try to put this together to come up with a code.

Customer: replied 1 year ago.
No check engine light at all
Expert:  Mike V. replied 1 year ago.

Are you saying when you turn the key on there isn't a check engine light coming on?

Customer: replied 1 year ago.
Correct
Expert:  Mike V. replied 1 year ago.

Well, if the light isn't even coming on for the first three seconds with the key on, we will never be able to get the codes if there are any.

Can you do a compression test on this?

Customer: replied 1 year ago.
I don't have a compression tester, but if it starts up on all cylinders and run smooth for two seconds, it wouldn't have to do with compression right?
Customer: replied 1 year ago.
Also the check engine light Will flash once when I put the key in, as normal
Expert:  Mike V. replied 1 year ago.

Seems like it would not be the problem. But you are pretty much ruling out fuel as the problem because it won't run off the carb cleaner. This would mean fuel and spark isn't the issue. All that is required is fuel, compression and spark. Something is going away and must be staying away to prevent the car from running.

Does the car have a remote start or aftermarket starter on it?
So, the light does come on. Make sure your jumper is secure in the correct to slots. Even if there isn't any codes that light should be flashing when you turn the key on with the jumper in the 2 terminals.

Customer: replied 1 year ago.
No it's essentially stock, no aftermarket anything except for springs and shocks
Expert:  Mike V. replied 1 year ago.

You need to double check your jumper when you are putting it in the terminals. It should blink even with no codes. You got something going on there.

Customer: replied 1 year ago.
Big fat I insulated metal paper clip showed in at ground and Ten, no light
Customer: replied 1 year ago.
uninsulated
Expert:  Mike V. replied 1 year ago.

Sorry, I guess I am not going to be able to help you with this. I will open it up for the other experts.

Please don't reply to me or it will lock it back to me and they won't be able to see it to help out

Expert:  Amedee replied 1 year ago.

Hello and welcome! My name is Amedee. I can assist you over the phone if you would like but there is an additional cost. Please let me know if your interested so we can continue.