Installed Rc 750's now p0302!!! - SRT Forums

AnsareStg0 · 10-12-2009, 09:22 AM

Ok so after installing Rc 750's im getting p0302 (cylinder 2 misfire) i rewired cylinder 2's injector harness nothing, checked and fixed leaks and nothing the weird thing is the car isnt misfiring while cruising or wot just a slight misfire at idle. Its not the tune because i have 2 full custom cmr tunes from two vendors and it still throws the code! i even threw in some injector cleaner and that did nothing! i just finished installing a 57 trim and im currently on 9lbs i want to turn the boost up but im not sure if i should since im throwing that code!
even thought like i said no misfire while cruising or wide open throttle.

if it is the injector #2 would i be able to just buy 1 brand new one and call it a day?

should i turn up the boost and just ignore the misfire code?

AnsareStg0 · 10-12-2009, 10:03 AM

anybody??

RiVal · 10-12-2009, 10:14 AM

jus a thought check O-rings on injects for rips.. check plugs?? gap?

NemoFoss · 10-12-2009, 10:16 AM

Did you swap injectors from #2 and #3 to see if the misfire moves?

rollwitstyle · 10-12-2009, 10:42 AM

Quote: Originally Posted by NemoFoss

Did you swap injectors from #2 and #3 to see if the misfire moves?

stole my words lol

AnsareStg0 · 10-12-2009, 10:42 AM

Quote: Originally Posted by NemoFoss

Did you swap injectors from #2 and #3 to see if the misfire moves?

no

i havent had time to , im at work and working a double today!

AnsareStg0 · 10-14-2009, 05:29 PM

ok so yesterday i swapped injector #2 with injector#3 and checked for leaks it was good to start.

i drove the car around for 20 - 30 minutes and it seemed fine no codes even though it took a while last time before it threw p0302 so i parked it and called it a night.

well today i drive to work and its fine no code or bad idle then at lunch time i drove to mc donalds and i noticed it threw a code so i check and the code was p0172 !!

57 trim on 9lbs is no fun

AnsareStg0 · 10-15-2009, 05:42 PM

Ok last night i replaced the o rings on all the injectors and checked for leaks and everything is good but today i threw p0172 again!!

I should have bought these injectors new

!

Any help would be appreciated!!

19 psi · 10-15-2009, 06:34 PM

im no genius but i think p0172 means to rich. that would mean theres nothing wrong with the injectors just your PCM needs to trim the fuel or somthing idunno??

AnsareStg0 · 10-15-2009, 09:05 PM

Quote: Originally Posted by 19 psi

im no genius but i think p0172 means to rich. that would mean theres nothing wrong with the injectors just your PCM needs to trim the fuel or somthing idunno??

i know but i didnt throw that code since i had it installed for the last 2 weeks till i switched injectors around.

im gonna log the ltft and the stft and have someone take a look!

ST3PH3N'S SRT-4 · 10-16-2009, 12:20 PM

i got a rescale and throw that code all the time. i ignore it. my a/f's are correct and i dont misfire under wot so its all good to me.