hey guys im trying to figure out the misfiring codes i got on my lnf p0300 random cylinder misfire and p0301 cylinder 1 misfire. i was just wondering is it possible that if one coil is gone could it cause a p0300 random cylinder misfire?

 

One way to find out is to swap the coil pack on cylinder one with another and see if the misfire code moves. If it does, swap out the bad coil pack and see if both codes disappear. Check to see if your spark plugs are fouled also.

 

1 & 4 have been switched and now i cant get a code but i still feel a bad misfire. Plugs are new gaped to .030
Done compression test and got 160-170 on all cylinders. Cleaned maf and car ran better

 

Check the spark Plug boots, I had a bad one, it caused insane misfires on load.

 

Check the MAP sensor also

 

Is there a way to check it with a meter

 

do all cobalt share the same coil pack?

 

Id like to know this, I just put some from a 2.2 I had laying around into my lnf and they work fine, they seem to work a little better than the ones I had on there

 

just took off my intake manifold the other day and cleaned my valves. changed my plugs and coils. gonna take her out of storage today and try her out lol

 

What method did you use for valves, walnut blast or brush? How did they turn out? Would like to know if it performs better too, mines past due

 

Walnut shell and dental picks time consuming and messy but well worth it if you have alot of build up. Car runs 10x better lol