Car starts, bogs, then dies
 

I have no idea whats wrong with my car this time. My silicone coupler from the cold charge pipe to the IM had a hole in it (long story) so I replaced it. Right after installing the new coupler I try to start the car and it stars then bogs a couple times and dies. The car stayed on long enough to throw the codes P0336,P2178, and P050A. I looked up the info on the cels but I have no idea what the problem is. When the car was running it was always misfiring at idle and would sometimes blow out white smoke. Does anyone have a clue what could be wrong with my car.

my car did some wierd stuff when I fixed a boost leak simalar to what your describing it didnt through a code though maybe try diconecting the battery for a little while and see if resetting the computer does anything

Mine sorta does the same thing since its gotten cold out. Sometimes it will start, chugs for a couple secs, then eventually die. Go to start it up on the second time and it starts like normal. Bit i dont have any smoke off of mine tho.

robk

I'm getting bogging and slight misfires at startup but I think mine is evap related

Just looking at the codes

One is for crankshaft sensor, one for idle speed at cold start and the other to too rich bank 1

This is where I check out cause it's above my head

p0336 - Crankshaft Position (CKP) Sensor Performance
p2178 - Fuel Trim System Rich at Cruise or Accel
p050a - Cold Start Idle Air Control System Performance

dont know what those mean.

I had this happen to me, but supercharged, turned out to be a bad map sensor.

Really a bad map sensor thats weird cuz I was getting the P0106 cel a while back also but didn't really pay attention to it since the sensor has blown before and nothing happen.

I already tried resetting the battery and tried starting multiple times with no luck.

yea, believe me it was a mess to trouble shoot, I checked just about everything from the fuel pump to the Tb. Plugged in the new map, started like a champ.

lol after you checked and rechecked every other sensor oh good times of your build

lol o the precious memories

The choking on cold start-up is weird. Mine only chokes on start-up if let the key sit in the on position for a second or more. If i turn the key immediately to ignition it never seems to happen.

This morning when I started my car, it started hard. It barely idled for a few seconds then idled normal. The same time it was shooting black soot out of the tail pipe. What could it be. I have hp tuners but it's not throwing any codes.

Mine started rough and died. When I started her up the second time it was normal. No CEL and drivability was normal. Think the cold weather had a big factor. Below freezing weather FTL!!

this happened all the time to me when i had my ss.... i replaced the knock sensor, and maf sensor, and all was good, check ur fuel filter as well.