cmarris2142

I was driving the car today and everything seems good, when I would drive at a steady speed the sea light will randomly flash at me, sometimes it will flash 9-10 times, sometimes only 4-5 times then go away. No codes being thrown, and it doesn't feel like a missfire. It started doing it when I drilled out the MAF sensor hole on the lsx intake manifold and put the map in. Before that the map sensor was plugged in just hanging out on top of the intake when I bought the car. I know my long term fuel trims are way out 20-25% and it should throw a lean code but it isn't. Will these cars flash the sea light for fuel trims?

G Atsma

Sounds like you might still have a vacuum leak.

minytrker

iTrader: (13)

Flashing is vacuum leak most likely..its a random misfire.

LilJayV10

iTrader: (39)

Flashing CEL is a catalyst damaging misfire, which is normally a pretty noticeable misfire.

It should definitely should be throwing at least a p0300.

Is the car stock? Has it been tuned. I've seen some shops basically turn off all the DTC's...

Yes it will turn on the CEL for fuel trims after the LTFT are 25% normally.

cmarris2142

The car has longtubes, catless mid, lsx 102 intake. I switched the car over to speed density and got the ve table for just daily driving dialed in pretty good, ltft's are now -1 -2 ish. No more flashing and car is driving great, the missfire cel isn't disabled. Putting a btr stage 4 cam, 102 throttle body and injectors in after the holidays, I'll keep this thread updated after if everything is good! I appreciate the help