PurEvo

iTrader: (2)

I just had my motor built and running recently. I drove and put over 100 miles trying to break it in. While cruising on the interstate, my car suddenly started sounding weird. I put it in neutral to coast down but the car shut off. I've checked timing, which is good. Did a compression check, which is good and even across. Got fuel, got oil, got air. Checked all the couplers and vacuum lines, good. Everything seems good, except spark. Seems like 1 and 4 is sparking, but 2 and 3 isn't sparking. I've changed spark plugs, and coils, but same thing. 1 and 4 still spark, 2 and 3 still no spark. Anybody have any idea's??

jy951

iTrader: (14)

Is your check engine light on? Can you get a scan tool and read the engine codes?

PurEvo

iTrader: (2)

There's no check engine light on. Oh, it's an Evo 9. I used a friends coils from his Evo 8 if that mattered.

PurEvo

iTrader: (2)

Is there a way to check if the ecu it is going bad? People are thinking it's my ecu.

white_evo27

iTrader: (1)

try different coils? im no expert but if it were me i wouldnt be using evo Vlll coils in a IX


SpoolinUP has a good COP system to use! im about to order one this week!

OneEyedJack

iTrader: (6)

Exhaust cam sensor. This just happened to me. I had fuel all over, spark on 2, it would not fire over. Most times it would start a bit, but die pretty much immediately.

Everyone thought it was my ECU as well. Turned out the immobilizer had tripped, and after I fixed that with ECUflash and got fuel/spark back, realized I only had spark on 2 cyl. I tried swapping coil packs, I had an evo 9 and put an evo 8 coil pack in that I bought used, made no difference, still only spark on 2. Swapped exh cam sensor, car fired right up.

I'm still driving around with 1 evo 9 pack and 1 evo 8 pack...

PurEvo

iTrader: (2)

I sure hope your right. Now, i need to find my evo friends and see if they can swing by to let me test.

dmitirygolos

iTrader: (5)

good luck on that

PurEvo

iTrader: (2)

changed out the exhaust cam sensor. But it didn't fix the problem. The motor is running smoother though. But still not firing on 2 and 3. Any more ideas?

apexisilver8gsr

iTrader: (9)

most likely its your ECU man

PurEvo

iTrader: (2)

I'm not good with electrical stuff but this is what I did. I cranked the car and let it idle. I used a test light and touched the ecu pin for ign coil 1 and 4. The motor sounded like it wanted to shut off. I touched the ecu pin for ign coil 2 and 3. Nothing happen. Does this confirms that the ecu is bad?

PurEvo

iTrader: (2)

problem solved. Had a short in the wire harness. The wire went to the coil for 2 and 3. It's all covered and motor is running good again.

Ecu wasn't the problem.

Drifting Away

iTrader: (6)

I would upgrade to a spark tech system, havent driven on mine yet but my tuner tells my my car is doing much better with it on .

PurEvo

iTrader: (2)

I want to. But i spent a good bit on an AEM EMS already. lol