Problems ever more

[trinibassman]

Ok, now I love my LS and I love it alot, the power, the ride and the look on alot of faces when i pass them, I love it all but I think I must have the worst LS out there.

I've had problems from day one because of a shady dealer who's mechanic wrapped my coils in electrical tape so that they wouldnt get wet by a leaking valve cover gasket. Well 4 or 5 missfires later and I had to change valve covers, coils and plugs. Not to mention I had aamco rebuild my transmission - so you could imagine my frustration when that damn engine light came on again.

Here are the codes, some of them I know, the others I would like help on please.

P0307 - that I believe is a cylinder 7 misfire
P0304 - cylinder 4 misfire
P0175 -
P1152 -
P0171 -

I really am tired of the car

 

[Quik LS]

P0307 - Cylinder 7 Misfire Detected
P0304 - Cylinder 4 Misfire Detected
P0175 - Fuel Trim System Rich Bank 2
P1152 - Lack Of HO2S21 Switches - Sensor Indicates Rich
P0171 - Fuel Trim System Lean Bank 1

sounds like a vacuum leak (air getting around the MAF) or a MAF issue

 

[JES_LS]

Alright Lou,

there is another possibility.

the one sensor is not switching (fast enough) because its old/tired/damaged whatever.
If you have a lot of miles replace your o2 sensors and your Coils.

 

[Quik LS]

certainly could an O2 sensor.

since you replaced your coils already, and both sides of the engine are misfiring - hopefully it would not be coils again.

with the fuel trim codes - your air/fuel ratio is out of wack - either because of a sensor going down or a opening in the air-fuel-engine-exhaust loop.