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Mazda MX-5 Miata Starting and Stalling Problems

58 messages,  Last post on Nov 09, 2009 at 3:43 AM

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What is this discussion about? Mazda MX-5 Miata, Engine, Convertible

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#56 of 58 mx-5 sport not starting by rj842002 Oct 29, 2009 (5:15 am)
Hi all,   My Dad has just got a 2001 plate mx-5 sport and it has not decided not to start, I am a mechanic and i had 2 of my mechanical mates over last night to look at the car. We have gone through the coils, ht leads etc and all seems to be ok. I am aware that the cam position sensor could be at fault and i have not as yet replaced this. The car then decided to start and ran (badly) for about 10 seconds. we then looked in to the fuse box inside the car where we came accross something called the key recognition system. having spent rather a lot of time reading the forums and testing out the car, I suspect that there may be something to do with the immobiliser (if fitted) or this key recognition system could be playing up. We have tried to find fault codes in the engine and also the electrical system, but nothing was coming up. By no means am i disregarding the Spark plugs, Coil units ht leads etc, but if people have already replaced these items and are still having difficulty starting the car, this in my opinion is where you need to look in to. I will keep you posted on how things progress, if they progress.   Russell Replies to this message: rj842002 (Nov 09, 2009 3:43 am)
#57 of 58 2001 Strange Stalling Problem by berylporter Oct 31, 2009 (8:27 am)
I was driving my car from NJ to MA during a recent rainy night. The car was operating perfectly. I stopped to fill up and drove about 15 miles down the highway and the car stopped. I started it and it went a short distance then stalled. This was repeated several times until I finally was able to get off the road. The car was towed to a repair shop who determined that I needed a crankshaft sensor replaced. They did so and when I returned to the shop and paid them, I drove about 1/4 of a mile and the thing acted just as it had been. I had the car towed to a Mazda dealer who put it on the computer and supposedly tested it in a variety of ways, drove it and could not replicate the problem. I paicked up the car, it ran normally until the next day when it repeated the poor behavior. Any ideas? I am afraid to drive the car any real distance. The stalling occurs much less frequently, but it does still occur. Since the engine itself doesn't appear to be the cause of the stalling I am assuming it is electrical in some way. Is there a wire that could be shorting out or pinched? Help!!!
#58 of 58 Re: mx-5 sport not starting [rj842002] by rj842002 Nov 09, 2009 (3:43 am)
Replying to: rj842002 (Oct 29, 2009 5:15 am) right, quick update. not much progress on the car itself, but i ahve had my dealer call me and they have had a 2002 model in (2.5) and they found that it was having the same not starting problems as my dad's car has. they had it connected up and again it did not bring up any errors. they then went through the car wire by wire and found that the immobiliser system had packed in. they repaired it and it was fine. i will let you know how i get on.   Russell

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