97dsscobra

car is a accent with tib 2.0 motor with 1.8 pistons(high cmp)on 5 psi 440 ford injectors,255 walbro, jegs fpr, started acting up then i changed the plugs then i took to autozone for the codes and i got



* p0506 idle air control rpm lower than expected

* p0301 cyl misfire number 1

* p0303 cyl misfire number 3

* p0304 cyl misfire number 4

* p0300 cyl misfire random cylinders



i switched all of the parts under



plugs

plug wires

coil pack

crank sensor

cam sensor

iac valve

knock sensor

ecu





only thing i havent tried yet is comp. test or checked the injectors



any help would be appreciated



thanks.

faithofadragon

um unless im blind i dont see what your using to tune with

97dsscobra

It's on the stock ecu still

faithofadragon

I rest my case

97dsscobra

Your saying it's my ecu??

faithofadragon

im saying you turboed a vehicle that wasnt designed to be turboed in the first place



you have to have a way to adjust for that



damn does no one read my/jongtrs turbo grocery list anymore??



how do you expect your vehicle to run properly when you installed injectors that need to be scaled back 47% and a fuel pump that is almost twice as large



how do you expect for your MAF to compensate for the added pressure of boost when it was designed for a naturally aspirated vehicle



i give you 6 weeks before you blow something up and im being generous

turbosocks

stock ECU + the bigger injectors + 5lbs of boost is probably your issue..



was it EVER running/driving?



what is your fuel pressure set at? your injectors are 180% of the stock size. with no tuning, when your ECU wants to run them at 40% duty cycle with the increased size it would be like dumping in 72%. I would assume it would be running like garbage at idle unless you dialed back the pressure. Even then, I wouldn't see it running right.



Throw your stock injectors back in and see if the problem solves itself. don't try to load it with 5lbs though.

faithofadragon

remind me not to recommend anyone to 5 star racing

97dsscobra

Yeah it was running for about a month,then one day with out even boosting it started to act up.



And dragon guy, please none of this is needed I know I messed up by not tunning it.i was in the process of buying am aem for now.. Just need help,no dumb answers please you piece of sh*t a**hole. You should buy a honda.

97dsscobra

You don't recommend my racing team? LOL your an idiot!!!