Sputtering, running lean
#31
Gators2kt, I am aem certified. Pm me and send me your map I can take a look at your calibration for you. There and many things in the Aem software that can do this if set a certain way.
#32
All right so I bought 4 used coil packs and have isolated the problem. The car runs fine when they are cold, as mentioned before. The issue is with the coil pack closest to the firewall. Whenever the car heats up, the coil pack fails. I bought a new one from an auto parts store and have swapped 5 different coils with the same result. Immediately after the swap, the car runs fine for a few minutes and then it starts running like crap again. I have no idea why it's just the 4th coil.
Any ideas?
Any ideas?
#34
Your problem is my problem. Coil 4, closest to firewall, is heating up and causing the car to misfire. I e also switched out coils and works for a bit then goes out. Also works fine at first startup but goes bad when I try to restart.
#36
My problem has been resolved! Have your tuner check the ecu pinout. My tuner found a wire that was accidentally placed in the wrong spot. Your symptoms are what was happening to me.
#38
I'll check it out tonight. I wasn't them when they were checking the wires. We all know how cramped that space is. If I can't find it, i'll ask my tuner tomorrow. I do remember him saying the pin was in 5 instead of 6. But i'm not sure which wire..
#40
I had a similiar problem. Turned out to be a combination of the tune needing tweaking and a bad wide band sensor.
There is a good simple test to check the wide band. But first check the tune. For me it was in low load below 4k Rpms. Also I had to tweak my iat comp tables.
There is a good simple test to check the wide band. But first check the tune. For me it was in low load below 4k Rpms. Also I had to tweak my iat comp tables.