Help! Really unusual engine or ecu problem.

smoothtransit

about 2 months ago, I was driving and I was climbing rpm to around 3500, my car began to lock up and cut power then come back. This occurred through various gears, so I parked my car and left it for the night. The next morning there was no problem. Then last night, after washing my car, I went to go drive it and the same exact thing began to occur, considering how dangerous it is for the car to lock up in the middle of driving randomly, i pulled over and restarted the car. The problem however continued. I managed to get it home and upon starting it this morning I havent experienced the problem (my morning commute is short however).

This issue is seriously sketching me out and i have found limited info on the issue on the web (granted its really hard to describe). Anyone have any ideas/suggestions? It strikes me as a serious issue. The car is a 6spd,sport pack,2009 with 50k miles on it

Also, I think that its unusual that the problem went dormant for 2 months then came back.

I did find this thread: limp mode for no reason at all? but it doesnt seem like there is a proper solution.

DEpointfive0

I can't help.

My recommendation is to take videos while you're driving, show all the gauges too.

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smoothtransit

I would but the problem happens sporadically so i cant predict when it will happen. Oil temp was normal though, as was coolant temp. No CEL or anything either. Im super confused because i dont even have anything to bring to the dealer or a mechanic since its not a consistent problem.

carlitos_370z

dont know if work... but do you clean your throttles? take a look to see if the throttles are dirty or not...

smoothtransit

That seems like a good idea. I was wondering about this possibility as well.

carlitos_370z

Do it and let us know if you can resolve the problem bro

smoothtransit

Will do, thank you man

.c2

If it cuts power violently then comes back, might wanna try your intakes. Same problem happened with my Z with my AEM intakes and when I swapped out to the stock ones it was fine again :/ Problem plagued me for like a year before I figured it out, tried spark plugs, coil packs, cleaning throttle bodies, everything lol

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wanker

Jesus, take it to a mechanic. Having your car randomly die is serious and dangerous.

smoothtransit

Hmm thats interesting. My intake system is stock but i have a stillen CBE. If its air related I wonder what caused that reaction?

smoothtransit

I agree but its difficult for a mechanic to prescribe a solution when the problem isnt readily seen when they get it. The only way that would work is if i spent a boatload of money for the mech to inspect and replace various parts on the car which doesn't really show a good cost-benefit advantage here. As a broke college student, this option isnt even possible for me lol

DOOMMONKEY777

Feels like fuel cut out by any chance? Engine light on? Codes maybe?

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.c2

Hm if it's a stock intake, I wouldn't really worry about the CBE. In my experience problems like this are usually more related to induction, and not so much the exhaust side of things. I could be wrong though

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smoothtransit

I'm not sure about fuel cut out but there was no cel or anything like that. I read somewhere about oil being an issue too. Anyone heard of that?


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SouthArk370Z

I'd get an OBD/CAN scanner tool and take a look at any error codes that may show up. Not all errors throw a CEL.

A possibility that is easy to fix is dirty MAFs. Four small screws and a can of MAF cleaner. There are several DIYs on this site.

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