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Standard Ecu Makes It Hard To Start..

SargeRX8

By SargeRX8,
in General Maintenance

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SargeRX8 Grand Master

SargeRX8

Posted
Posted

Hey all,

I had a power FC in my car and my car would start about after a second, 1 - 2 turns of the crank. Now I took out the power FC the car needs about 8 - 10 turns, when warm, to start and now it idles really rough, almost feels like a lumpy cam with revs constantly dipping. I thought maybe dirty AAC but if a power FC can hold a stable idle with dirty AAC then the standard ECU should do it alot better.

I suspect something to do with my cas or timing could be off. Anyone have any idea? Holding the throttle open while starting does no difference either.

Car is a series 2 r33 gtst.

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https://www.sau.com.au/forums/topic/358992-standard-ecu-makes-it-hard-to-start/
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DVS JEZ Grand Master

DVS JEZ

Posted
Posted

check the coolant temp sensor for the ecu, might be playing up, making the stock ecu think the engine is still cold when its actually hot, this means the start up mixture will be too rich making it hard to start.

does it blow any black smoke once the stock ecu fires up when warm?

SargeRX8 Grand Master

SargeRX8

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  • Author
Posted

No smoke at all. None of my ECU's on this car caused excessive smoke. Its retarded. I dont know why it does it but all I know is when I add my power FC in, the problem goes away. Guess ill just wait til we get the car tuned with the PFC and mods and hope its gone. I really do think it has something to do with the CAS though, I did fiddle with it a while back and not sure if I put it on right lol.

Now I got another f**king weird noise coming from the car. It kind of sounds like a metal ting, does it when the car is idling can be heard from underneath the car so I gotta sus that out tomorrow. Sounds like someting loose or touching something it shouldnt.

SargeRX8 Grand Master

SargeRX8

Posted
  • Author
Posted

Does it get quieter/louder when the revs are increased?

Because it runs fine with the power fc it shouldnt be a CAS issue.

Its a really hard sound. There are two new sounds. One sounds like thick steel wire just being dragged around. Sound does not change with revs. The other is only at bare idle, any touch of the throttle it goes away.

This is the new sound. You can hear it as the higher pitch jig jig jig sound.

Did you get this one looked at?

http://www.skylinesa...eo-and-help-me/

Sounds bad to me, I'd be concentrating on it ASAP.

I know what that problem is, its coming from the rear of the cam gears. If I apply medium pressure to the back of the plate(above the venting gaps), the sound goes away. Its apparently not too uncommon with skylines. I'll get the problem clarified with Advan.

So what modifications have you done to the car?

Well now Ive got everything I need its just a matter of installing everything. First off is the clutch, then the turbo, then injectors and ECU.

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