EsThirteeny
09-16-2011, 06:09 PM
Set-up
550sti injectors
enthalpy tune
300zx n62 maf
built ka-t
Alright so, drove my car around on the tuned ecu i have, ran great, parked it, then the next day it wouldn't start.
The ecu was no longer grounding the EGI, so i had no signal to the maf
Had the ecu sent out and checked (all tests came back clear)
Martin socketed a new ecu so we could rule that out.
Got the tune back and the car still wouldn't start, but it does have maf signal.
However it will start with the stock ecu.But it idles very high (2k rpms) I checked the tps and its all good. IACV was recently cleaned, but pinching it off does not seem to affect idle at all. (i think i pinched the right hose, near the brake booster/fpr lines off the manifold)
(With stock ecu) I unplugged the maf, and didn't experience a change, but when i plugged it back in, it will idle at 1500rpms until it is rev'd then it goes to 2k rpms and stays there.
I'm at my wits end
Things checked/replaced
O2 sensor
TPS
Vacuum leaks(carb cleaner method)
Grounds
Injector seals/intake rubber o-ring
Fuel pressure
Played with dizzy, no luck.
Fuel pressure
MAF signal (and wiring for that matter)
550sti injectors
enthalpy tune
300zx n62 maf
built ka-t
Alright so, drove my car around on the tuned ecu i have, ran great, parked it, then the next day it wouldn't start.
The ecu was no longer grounding the EGI, so i had no signal to the maf
Had the ecu sent out and checked (all tests came back clear)
Martin socketed a new ecu so we could rule that out.
Got the tune back and the car still wouldn't start, but it does have maf signal.
However it will start with the stock ecu.But it idles very high (2k rpms) I checked the tps and its all good. IACV was recently cleaned, but pinching it off does not seem to affect idle at all. (i think i pinched the right hose, near the brake booster/fpr lines off the manifold)
(With stock ecu) I unplugged the maf, and didn't experience a change, but when i plugged it back in, it will idle at 1500rpms until it is rev'd then it goes to 2k rpms and stays there.
I'm at my wits end
Things checked/replaced
O2 sensor
TPS
Vacuum leaks(carb cleaner method)
Grounds
Injector seals/intake rubber o-ring
Fuel pressure
Played with dizzy, no luck.
Fuel pressure
MAF signal (and wiring for that matter)