mastercater7

iTrader: (2)

So last night I drove out to a buddys house to pick up some stuff. I popped the hood and he was lookin around at the car. I reved up the motor just enough for the blow off to go. Then we started talking and the idle started fluctuating by a few hundred rpms. Up and down over and over again. I figured it was just my emu being a pos again and left. As soon as I pulled out of the driveway the car ran like ****. Barely puttered to 2000 rpms. I pulled over and it eventually died. No vaccuum leaks I could see/hear. I checked the ecu for codes and it gave me crank pos sensor, ignition signal primary, and the evap code I always have. I changed the crank and cam sensors and the idle changed slightly. I also disconnected the emu ignition wires, since the emu is a broken pos and has a mind of its own. I now have no codes. I changed the MAF and no difference. All my couplers are nice and tight. Fuel pressure is normal. The exhaust smells like raw gas. I tried unplugging one coil pack while it was running. No matter which one I pulled, it made almost no difference in the idle, but when I pulled 2 it makes a huge difference. I am at a loss about this and Im worried I might have lost a cylinder. Mods can be found here http://forums.maxima.org/supercharge...d-4-5-gen.html Someone please help me!
Zack

liqidvenom

iTrader: (6)

damn zack, i was going to say that maybe you had a vaccum leak someplace.

98MaXeDouT

iTrader: (6)

Honestly, this just happened to me. It turned out being crap injectors.

Had all the symptoms you had, crap idle, shiity accel./driving. I even unplugged 2 Coils and same thing you said. I swapped in stock injectors and it worked fine. Good luck

mastercater7

iTrader: (2)

Im gonna be really mad if my brand new injectors are crap. Ill try that and let yall know

mastercater7

iTrader: (2)

Did you end up buying new injectors? What did you end up doing?

mastercater7

iTrader: (2)

Well its definitely not the injectors, I swapped them and no difference. I noticed one of the plugs was soaked in fuel and the rest were dry. I triple checked and there is definitely no vacuum leakes. Hopefully it is just a coil pack, but I wont know until tomorrow. If anyone else has an idea, please throw it out there.
Zack

98MaXeDouT

iTrader: (6)

I bought a new set of 440's and everythings good...

maximase86

iTrader: (24)

It was a bad coil pack. Oddly this one was firing...but very weakly...enough not give a CEL, but bad enough to screw with the idle. We tested all 6 on my 5.5gen and found the problem child. It's interesting because on my car, it was slightly noticeable in the idle, but on his car, it was clearly noticeable.

S