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2002 Mazda Miata Intermitant Engine Stall
Posted: Mon Sep 23, 2019 11:20 am
by Tim Martin
I have this 2002 Mazda Miata with a 1.8L engine and a manual transmission. The issue is a very random intermittant engine stall upon startup. It may go for several days till it happens again. There is no codes in the PCM. I replaced the idle air control valve several weeks ago and the issue is still there. The car only has 60,000 miles on it. I have tried to have my scan tool on it and monitor various sensors but so far Im coming up empty. Everything is working as it is supposed to. What should I be looking for?
Re: 2002 Mazda Miata Intermitant Engine Stall
Posted: Tue Sep 24, 2019 6:42 am
by brianp87
Random issues can be difficult. It really only needs two things to run. So first you need to see if it is losing fuel or spark during the event. Then after that move forward each time it happens.
Re: 2002 Mazda Miata Intermitant Engine Stall
Posted: Thu Oct 03, 2019 4:57 am
by Tim Martin
Today I replaced both the camshaft sensor and the crankshaft sensor as per advice from other techs. Went to back the car out of the garage and lo - the problem is still there. I started it up and could not keep it running even with rapidly stroking the accelerator pedal. It shuts off and then I start it up again and it stays running. Extremely difficult to diagnose.
And extremely frustrating.