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Thread: Car shutoff while driving, and won't restart!

Started 1 month, 1 week ago by Hari
First off roadside assistance has already towed the car to the dealership, but while I wait I would like a second opinion... So yesterday, I finally got around to installing my 2.5" catted front midpipe section with O2 sensors and extensions. I had been running a 2.5" straight pipe from header to muffler previously, but decided to go green. I hooked up the O2 sensor extension, but ...
Site: MX-5 Miata Forum  MX-5 Miata Forum - site profile
Forum: NC (2006+)  NC (2006+) - forum profile
Total authors: 32 authors
Total thread posts: 92 posts
Thread activity: no new posts during last week
Domain info for: miata.net

Other posts in this thread:

mmmymiata replied 1 month, 1 week ago
Will the warranty still cover if it was caused by your mod?

wooo replied 1 month, 1 week ago
Quote: Originally Posted by Hari ..... Luckily my warranty is good until the end of the month..... But is it good for this apparently mod related incident? Wonder what codes there are?

Hari replied 1 month, 1 week ago
Quote: Originally Posted by mmmymiata Will the warranty still cover if it was caused by your mod? Well it's not much of a mod, I merely disconnected and reconnected the negative terminal of the battery. I don't see the O2 sensors being the cause, since I ran without them for months with no problems.

dwest1023 replied 1 month, 1 week ago
Sound like the immobilizer it not recognizing your key. I am thinking fuse. Maybe when you connected the OS wire you shorted something. That is my take.

black&blue replied 1 month, 1 week ago
I have a feeling something shorted out and you blew a fuse or two

Hari replied 1 month, 1 week ago
Good call on the fuses. I have a feeling now it may be those O2 sensor extensions. They may have been too close to the exhaust and melted. The primary O2 sensor cable extension in particular is kind of short while the secondary is too long. We'll see soon when I hear back from the dealership.

notoriousdjw replied 1 month, 1 week ago
I disconnected my NB battery to clear codes many times back in the supercharger days. It was never a problem. However I was stranded a couple of times by a rubbing wire to the MAF that blew a fuse. I'd bet on your O2 extensions...

Hari replied 1 month, 1 week ago
Quote: Originally Posted by notoriousdjw I disconnected my NB battery to clear codes many times back in the supercharger days. It was never a problem. However I was stranded a couple of times by a rubbing wire to the MAF that blew a fuse. I'd bet on your O2 extensions... I'm having that feeling too. These O2 ...

twowheeled replied 1 month, 1 week ago
I'm 99% sure it's the extensions. To my recollection, the car will not run without receiving signal from the O2 sensors.

Chas H replied 1 month, 1 week ago
Quote: Originally Posted by twowheeled I'm 99% sure it's the extensions. To my recollection, the car will not run without receiving signal from the O2 sensors. The engine will run without the O2 sensors. In fact, the O2 sensors are ignored when the engine is first started. Shorting either the heater wire or the ...

 

Top contributing authors

Name
Posts
Hari
21
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-12 11:43:00)
Quote: Originally Posted by tom4416 Hari - I would really enjoy you posting a follow-up after your conversation with the dealer. That type of deception is inexcusable. If it's because the techs are so ignorant they could find the problem then they need to seriously rethink their way of training people (and I'm sure this is the story you'll get). If they knew it was only a $3 fuse, then they would be admitting to fraud to a...
WHY!
10
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-12 11:13:00)
OK, so hari's car is good and the dealership has a lying service department, now I have one question.... How did fastredrat's car wind up in a swamp?!
wooo
7
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-12 11:13:00)
Quote: Originally Posted by Hari .....I told them about the O2 extenders, but they did not mention them melting or shorting when they looked at the car. So you did tell them about the extenders. I wonder if it registered and was passed on to the mechanic(s)?
RealtorBob
7
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-12 12:42:00)
I had a problem with a dealership some years ago similar to your problem. I found out that the Mechanics were working for an hourly rate of pay PLUS an extra commission on all the parts they sold. So, the more un-needed parts they put on my car the more money THEY made. After I found that out I never returned to that dealership.
sandor
5
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-11 09:26:00)
Quote: Originally Posted by realtorbob you know hari, after reading all your posts, it sounds like you should take the car to a different mazda dealership for a second opinion. Next they'll be trying to sell you 4 new tires. +1
notoriousdjw
3
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-10 17:39:00)
The problem with most stand-alone ecus is that they don't take over all the OBDII and ancillary functions like idle air control, fans, etc. I ran a SDS computer for fuel and spark but left the OBDII and other stuff to the stock ecu (sometimes called a parallel ecu setup). That's different also from a piggyback which alters the stock ecu's fuel and spark when needed. I'm guessing you need to have a stock ECU just to pass...
arejohn
3
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-11 15:01:00)
We call them stealers not to be rude but from experience.
woodsm
3
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-12 06:47:00)
I would first speak to the owner of the dealership. They need to be informed that they have a shop that is either inept or criminal. If you are not happy with how they react to your story, the next best stop is your states attorney general office. I don't know how Ga is set up, but if they have a consumer afairs dept, that's the place to go.
sprorchid
3
user's latest post:
[Warranty] Car shutoff while...
Published (2009-11-12 19:13:00)
Hari, thanks for keeping everyone in the miata nation up to speed regarding you dismal adventure. I am glad it was a simple fix, and that YOU figured it out. It's folks like you that make this forum a great place.
twowheeled
2
user's latest post:
Car shutoff while driving, and...
Published (2009-11-06 19:16:00)
Quote: Originally Posted by Hari As Chas H stated the car will run without O2 sensors; in fact I have been running without them for a couple months. I finally reconnected them after getting a midpipe with a cat. Got a call from the dealership today and they say it's the ECU, and that a new one will be here Monday. I'll update the thread Monday after it comes in and is installed. thats odd. I extended my own O2 wires, and I recall...

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