Motor Just Shuts Off

[rico05]

Not sure on this one guys.

The other day, my tach fluttered (jumped really quickly from the 1800RPM I was cruising at to like 2k, then to 1k, the back and forth like 4-5 times) then the motor just shut off. No warning. No sputtering. Nothing. Just dies. It immediately cranked back up and no other issues.

Tonight, I left work and went a block to Taco Bell for dinner. I pull into the drive thru line, and it dies. Ran fine from start up and for the block. But as soon as I am stopped, it died. I cranked it, it started, then immediately died again. Did this two more times before it would stay running. The third time before it died, I could keep it running with the throttle, but as soon as I let off, it died. After the third crank, it ran fine. Perfect actually.

Once I got it running for good, I pulled out of line and popped the hood. All sensors were connected. No gas smell. Nothing odd. On the way home, boosted awesome and ran like a top. The odd thing is, it just fell dead. No sputter. Nothing. It shut off faster than if I had turned the key off. It seems to only have done this when cold, but I can't see any duplicatable circumstances to cause this. Any input is appreciated. Thanks guys.

On a side note: It has been a little backfirey lately, and sometimes the starter seems to stick. All this has been happening after I redid the harness. It ran great for a month after the rewire (actually better than ever), but now it seems to be a little off from time to time. I am 99% sure that I have a crap injector, and my new ROM will be here tomorrow to control my new 450s that are ready to go in.

[rico05]

Anyone think it is my ignitor? Since it just dies, it seems like an ignition issue. I may just pick one up from the jyard for fun. $20 ain't bad, even to have a spare.

BTW, this morning all was hella well. Rained just before I got up, and my RT-615s are killer no-grip fun in the rain.

[boost_boy]

Not sure on this one guys.

The other day, my tach fluttered (jumped really quickly from the 1800RPM I was cruising at to like 2k, then to 1k, the back and forth like 4-5 times) then the motor just shut off. No warning. No sputtering. Nothing. Just dies. It immediately cranked back up and no other issues.

Tonight, I left work and went a block to Taco Bell for dinner. I pull into the drive thru line, and it dies. Ran fine from start up and for the block. But as soon as I am stopped, it died. I cranked it, it started, then immediately died again. Did this two more times before it would stay running. The third time before it died, I could keep it running with the throttle, but as soon as I let off, it died. After the third crank, it ran fine. Perfect actually.

Once I got it running for good, I pulled out of line and popped the hood. All sensors were connected. No gas smell. Nothing odd. On the way home, boosted awesome and ran like a top. The odd thing is, it just fell dead. No sputter. Nothing. It shut off faster than if I had turned the key off. It seems to only have done this when cold, but I can't see any duplicatable circumstances to cause this. Any input is appreciated. Thanks guys.

On a side note: It has been a little backfirey lately, and sometimes the starter seems to stick. All this has been happening after I redid the harness. It ran great for a month after the rewire (actually better than ever), but now it seems to be a little off from time to time. I am 99% sure that I have a crap injector, and my new ROM will be here tomorrow to control my new 450s that are ready to go in.

Beware of the crank angle sensor, it's connector, or a bad tooth inside the camshaft. Also, make sure no moisture has gotten into your ecu. As for the ignitor, just worry about the connector for now.

Dee

[r34 gtr]

RT615s in the rain = win. Absolutely anything will induce a tail-happy driving experience. As for your problem, no freaking clue.

[rico05]

CAS, hunh Dee? Well, I will go pilfer one off the Pulsar in the jyard local. Thanks buddy. I'll test it when I have the time and I'll get back to ya.

BTW, weather permitting, I am putting those 450s in tomorrow. My ROM just arrived, so I can't wait!

[rico05]

Ok, update. I was poking around the other day after a misfire (the tach went to zero, then in an instant, was back at my previous RPM. There was also a misfire and flame pop), and I found that my ECU was not mounted tight. I remounted it, and since, I have had no issues. Makes no sense to me, but seems to have cured it.

[Rookieca18det]

Yeah, i was going to say check your ecu but i see you already got it. My car did this except the rpm would jump to like 4k and then down to 1k and then shut off. I unfortunately had a bad ecu, swapped out the ecu and have been fine since.