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Hi i have a 1990 Eunos Roadster and every so often it will stall, i have never caught it stall when just idling but i've noticed it the most when i am slowing down (clutch in or in neutral) or have just stopped, i think it only happens once it has warmed up but it could have happened once before it reached running temp. what should i do?

This might help: NA6 Idle Dip:
http://www.miata.net/garage/KnowYourCar/S7_Idle.html

93_Clubman wrote:This might help: NA6 Idle Dip:
http://www.miata.net/garage/KnowYourCar/S7_Idle.html

It's not a dip in the idle as such and i don't notice this dip at all, it's either fine or stalls it has 150,000 and 3 previous owners and since it never goes below 800~ im guessing this may have been addressed as an issue already?

93_Clubman is right, try re-seting the base idle.

Also, grab a can of carby cleaner and clean your throttle body, cold start valve, isc valve, and if you can be bothered the whole intake manifold.

emily_mx5 wrote:93_Clubman is right, try re-seting the base idle.

Also, grab a can of carby cleaner and clean your throttle body, cold start valve, isc valve, and if you can be bothered the whole intake manifold.

Okay thanks, I have later had a deeper look into google and found out this isn't a too uncommon problem, it had it's service not 2 days ago and im not sure if it did or did not do this before the service but ill open the whole intake and have a good clean of it

angusis2fast4u wrote:it had it's service not 2 days ago and im not sure if it did or did not do this before the service

It's great that you've just had the car serviced immediately after buying it. NA6s are 20 or more years old now, & servicing sometimes gets overlooked after the purchase & the big spend it involves. Some have full service histories, & that's great, but some don't even have recent service histories. So for a 20 or more year old car it can be useful to baseline (full) service it so that you have a known starting point if you later have to diagnose an issue. Of course, additional benefits are sorting existing issues & improving reliability.

If you get the chance and have the ability, good to run a quick code check too. See what's coming up as an error etc.

A check up never hurts. Get the problem before it gets you in the middle of the road!