nismoskyline350

So my car started having this issue (lsj sc) where under load after 5psi the car would missfire , ive replaced plugs, gapped em at .035 , changed the evap unit that tends to mess up the idle on these cars, new /upgraded coils, only thing i havent replaced are the 02 sensors , the fuel pump was replaced aswell , any ideas guys?

jdbaugh1

iTrader: (1)

Are you tuned or throwing any codes? Do you have a wideband gauge?

nismoskyline350

im not tuned and i get a random check engine light that comes and goes , im not sure what a wideband gauge is, i just cleaned out the air filter and maf, aswell as changed the 02 sensors i still have the same issue

nismoskyline350

another thing when i do have a check engine light when i hook up the scanner it wont even read or turn on to read the codes ive tried multiple scanners when i do have the light on and none of them even read the cars codes

cluelessk

Are you using just a generic OBD2 scanner?

Try getting a higher end scanner on it. Even though it sucks it might be worth paying a shop.

I'm not sure if LSJ's are as picky as the LNF but for the LNF OEM spark plugs are recommended.

Also what do you mean by "upgraded" coils? OEM is more than enough for you and usually more reliable by a large margin over aftermarket.

Aftermarket replacement parts are quite often trash. Especially when it comes to sensors and electronics.

nismoskyline350

they are np boosted coils theyre red ones and yes a couple different generic scanners

cluelessk

I'd find Oem coils asap. Even used.

Pretty much anything is better than EBay specials.