Trouble with Car Stallling

[Sergiothechief]

Hello everybody, let me start off by saying I have a sbd500x kit on 700cc injectors and an aem fuel pump running on a flex fuel kit. Car has been tuned by a reputable tuner and since installing turbo kit car has had a problem with shutting off. The problem is that it does it on random occasions when coming to stop and when downshifting. Also, when I rev the car to high rpm's the car will sometimes catch it self but sometimes it just shuts off. On occasion when I come to stop at a light my car idle up and down to say 2500 and go down and do this a few times before it completely shuts off. Any help will be greatly appreciated. On a side note, I replaced my map sensor thinking it was a faulty 4bar map sensor but the problem persist.

[BlOody_BoOger]

Originally Posted by Sergiothechief

Hello everybody, let me start off by saying I have a sbd500x kit on 700cc injectors and an aem fuel pump running on a flex fuel kit. Car has been tuned by a reputable tuner and since installing turbo kit car has had a problem with shutting off. The problem is that it does it on random occasions when coming to stop and when downshifting. Also, when I rev the car to high rpm's the car will sometimes catch it self but sometimes it just shuts off. On occasion when I come to stop at a light my car idle up and down to say 2500 and go down and do this a few times before it completely shuts off. Any help will be greatly appreciated. On a side note, I replaced my map sensor thinking it was a faulty 4bar map sensor but the problem persist.

You should do a data log of some casual driving so you can see what the car is doing when it shuts off.

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[anticubus]

Originally Posted by Sergiothechief

Hello everybody, let me start off by saying I have a sbd500x kit on 700cc injectors and an aem fuel pump running on a flex fuel kit. Car has been tuned by a reputable tuner and since installing turbo kit car has had a problem with shutting off. The problem is that it does it on random occasions when coming to stop and when downshifting. Also, when I rev the car to high rpm's the car will sometimes catch it self but sometimes it just shuts off. On occasion when I come to stop at a light my car idle up and down to say 2500 and go down and do this a few times before it completely shuts off. Any help will be greatly appreciated. On a side note, I replaced my map sensor thinking it was a faulty 4bar map sensor but the problem persist.

Have you been in touch with your tuner? If not, I'd be proactive, grab a log (And then stop driving the car until it's analyzed), and then send it their way if they're willing to check into things for you. You can also post it here and there are many members with tuning experience who would gladly offer their opinion on the issue and potential root causes.

By your description it could be fueling, a bad sensor, a leak, all sorts of things. Some questions that can help narrow it down: Is your flex fuel kit reporting the right ethanol content? Are your AFRs and targets close? Are your plugs and coils good (Especially if you have an earlier model with the bad coil packs and old wiring harness design.)

Let's get your car back to 100% my guy!

[jflogerzi]

Get a better tuner. Zach at CSG will set you up right. Also if your boosted go ecutek.

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