Arcayne

Looking for a bit of advice.
I was driving along and the Idle just dropped and started to hunt. The boost gauge was not fluttering but the VAC reading dropped as the revs dropped.
I pulled over and stopped. Checked everything was okay then Cranked the engine and she started. ran for a minute then the idle went crazy again.
The exhaust started popping. When I looked at the PFC it had the apexi logo and wouldn't let me into any of the menus.
The car finally died and wont start.
It was dropping alot of petrol from the turbo/exhaust.

I Unflooded it and put the stock ECU in and tried cranking it.

It tries to catch but I think the plugs are wet again. There is no fuel dropping or at least not as much as there was.
Plugging in the PFC causes all sorts of electrical problems. Like the fans running and the Idle control solenoid clicks, and so does the wastegate solenoid.
I have been told that there is a chance that the PFC could of blown an injector driver.

Any suggestions would be a great help.

particleeffect

did you properly set the PFC up into your specific car? i'm not sure of the data to start again but when it's new it needs to be started in your car, idle for 15 minutes, then idle with defroster on for 15, then idle with air con on for another 15 mins.

i really doubt the PFC broke something on it's own, it's not running windows 98. was it tuned by a repudable tuner on your car?

what injectors are you running?

Arcayne

The PFC has been on the car for a few months now. It was properly setup and mapped.

particleeffect

did you check to make sure it hadn't somehow unplugged from one of the harneses? and the map sensor is correctly plugged in?

when you turn the ignition into the "on" setting, leave in there without starting... and can you get to any screens other than the startup "Apexi" screen?

Arcayne

Turn the ignition on and without cranking all I get is the apexi logo...sometimes It will go beyond that, then I can see that it has also lost the map that was in it. The bulk of the time it won't pass the Apexi logo.

The car is stock apart from the ECU and a full exhaust system.

I am just wondering if it could of damaged anything. Or have I killed the engine

racerfoo

take out the PFC, change your plugs, and put in the stock ECU and see if it starts up and runs. unflood it if you have to. that should tell you if its the PFC or your car.

it could be something else, but that will help eliminate a few things.

Arcayne

I have already tried swapping between the PFC and the stock ECU a couple of times. Trust me the PFC is nothing more than an expensive paper weight right now.

What could it of damaged when it lunched itself?

particleeffect

well if it stopped sending enough fuel you could have blown the engine of course. put the stock ECU in and test your compression.

Rx-7$4$me

My PFC did the EXACT same thing when it shorted out. If you try to crank it does it sound like its siezing up ? Did fuel ( petrol) pour out of your exhaust, intakes, fill up your intercooler etc. ? You have the exact same symptoms as I did. Do a search for my post on it and you will find out.

However, if you had the same short thatI did, its repairable VERY easily.

Rx-7$4$me

ALso, if the Fans go on when you turn the key to the on position its the PFC telling you that somthing is wrong

Arcayne

You never actually posted up what your fix was.

mad_7tist

yes it sounds fried. look around at your harness and anything you disconnected/eliminated and be sure they are insulated

Rx-7$4$me

My fix was a fried and esentially blown lead in the PFC. My buddy took off the cover and saw that the lead had blown itself in half, rewired it, and it works fine again.

Arcayne

Cheers for that. Will have another root about when the sun comes back up.

Finally managed to get the car running on the PFC albeit not very happily, when you go into the boost settings the screen is all to crap. The sensors all seem to check out okay in the check menu. You can bring the boost settings down but not back up, the same applies to the wastegate duty cycle. Swapped back to the stock ECU and she runs quite well. Although I think it is mis firing at about 5-6krpm. She certainly isn't pulling as hard as she used to.

Rx-7$4$me

did you clip the pins or the wires on your harness? if you clipped the wires, send it back to apexi and have them check it out. Dont even bother if u clipped the pins