bonitaapplebum

I have a 1995 Miata that is NOT running/starting up.
I already tuned it up, changed the fuel filter and changed the coil pack. The engine is cranking but not able to start though. My dad told me there's no current going through the spark plug wires. I've read other forums and most common problems are Tune ups, clogged fuel filter, defective fuel relay, fuel pump, Coil Pack, Camshaft angle sensor (which is really expensive for me) I really need to get my car fixed. What do you guys think? could be the ECU?
HELP HELP HELP.!

Bond

iTrader: (6)

If there is no spark, then you should fix that.

bonitaapplebum

Yea but I don't know where to find that problem because I already changed the Spark plugs, Wires and Coil Pack...
ADDITIONAL INFO:
I diagnosed the check engine and here's the result.
(1) long check engine light
(3) 1.2 sec check engine lights
(4) 1.2 sec check engine lights

So I guess the code is 1:3:4? IDK how to read this. NEED HELP please.! :(

bonitaapplebum

I'm thinking either ECU or Camshaft Angle Sensor?

dustinb

There's totally not enough information in this thread. When did it run last, and what changed for it to stop working?

bonitaapplebum

the last run was last week when I was at the parking lot warming up my car and suddenly the engine just died. I tried starting the engine but it won't not even crank the engine. Then after a couple of minutes, the car's engine turned on like nothing's happen. From what I read from the forum, one of the reason is because of the fuel filter so I changed that too and it worked for a couple of hours. Then I took it for a drive and i heard something's popping on the exhaust. Then after that, the unit won't start til' now. I already changed some parts and found out that there's no current going through the spark plug wires but I already tuned it up and changed the coil pack. So I'm thinking maybe the CAMSHAFT ANGLE SENSOR is BAD? maybe the ECU coz that's what I heard from my friend. but I diagnosed it and the codes are 1:3:4 check engine lights...

Miataman28

The p0134 code indicates an oxygen sensor code, if it is showing no other codes then you may want to start taking some daignosis steps. 1) pull spark plug wires and and put a spare spark plug in it. Find a good ground and check if there is spark. If not start checking electrical connections for coil and CAS. 2) check for fuel pressure, turn key to second position and GENTLY push the shrader valve on the fuel rail and see if pressure is present and strong. If not the you may want to double check and make sure there is fuel in the tank. If so the you may want to give the fuel pump a listen, if there is no whine there may be your problem. Lmk how it turns out and how i can help.

bonitaapplebum

thanks MIATAMAN28! I'll try that when I get home tonight. Ill keep you posted.
I checked the book and the OBD-I codes.
1 = Ignition coil
3 = CAMSHAFT ANGLE SENSOR
4 = CAMSHAFT ANGLE SENSOR
------------------------------
and they all fall in the categories of "ENGINE WILL NOT START"

are you sure it's about the O2 sensor?

Miataman28

Im pretty sure thats an o2 code. The first set of blinks is the first number in the dtc code. The second set of flashes is the secong digit in the code and the third is of course the third digit of the code. And there should be a five-ten secong pause with no lights and then reiterate the code. I will double chack for you tonight though.

Sean

iTrader: (12)

Check the conector to the CAS my dads car quit because there was oil in the connector and if it has an 02 code pull the 02 sensor out and check the wire make sure they are not chafed or burned. I have a 95 and one of the wires to the 02 sensor chafed through, grounded against the block and made all sorts of weird stuff happen. Last but not least tap the CAS while someone it cranking the car this may help determine if it is bad.

MartinezA92

iTrader: (4)

Wait. As far as I know, OBDI cannot throw a P0134, and only OBDII can give you p-codes. Somebody please correct me if I'm wrong.
If you don't have spark, the fuel filter has nothing to do with it.
If the engine doesn't crank when you turn the key, fix that first. You can have a ******* thunderstorm in your cylinders but if the engine isn't cranking it will not start.
I don't know this 100% for sure as far as Miatas go, but if your injectors are squirting fuel when you're cranking, I'd go out on a limb and say your CAS is fine. So, go verify that you have fuel.

http://www.miata.net/garage/Engine_Diagnostics.html

You're welcome.

bonitaapplebum

Yes my 1995 miata has OBD-I
I just replaced the Camshaft Sensor and now the only code its giving me is 4 LED lights. But when I read my book, (4) LED check lights means No signal from CAMSHAFT ANGLE SENSOR..
Could be the CAS connector? or ECU?

MartinezA92

iTrader: (4)

The ECU is telling you its not getting a signal, and giving you a code. I'd eliminate the ECU as your problem, besides the fact that I have never in my life heard of a stock Miata ECU going bad.

Miataman28

Umm yes you are correct but it translates to a similar code.i believe he said it is cranking.

bonitaapplebum

Ok. Now that I changed the Camshaft Angle Sensor and eliminated the (1) & (3) check engine lights. I only have (4) check engine lights but the book says (4)LED check engine light means No signal from CAS and checked the spark plug wires and there is still no spark... I haven't checked the fuse box under the hood and steering wheel though. Should I check that too? I could tell that my car's problem is getting narrow... THANKS for all the advice.!

MartinezA92

iTrader: (4)

I'd check all the fuses. You're probably not getting spark because the ECU isn't getting a CAS signal, thats just an assumption though. I'm willing to bet you'll get spark after you fix that problem. I don't know how skilled you are with wiring, but I'd start checking for continuity on the CAS wires by now.

Miataman28

This

bonitaapplebum

Could be the ECU. I've heard that ECU is one of the biggest problem of Mazda... THANKS.!

And no... I don't have enough experience on wiring..... :(

MartinezA92

iTrader: (4)

Right now the ECU is telling you what's wrong. Check for continuity (google is your friend) across the all the CAS wires and if you have it, and you are damn sure this CAS is good, then suspect the ECU. I don't memorize 95 Miata wiring diagrams but I'm going to assume the wires go straight to the ECU

bonitaapplebum

I cracked open the ECU just to make sure that it is dry because it could be wet from the moist....
So I guess I have to look for a good ECU.
The ECU from 98+ NB would work to my 95 NA right?