Sorry for making a new thread on this I just wasn't finding anyone who had the exact same issue and while I'm hoping new plugs and coils will fix this problem, I have until weds before the parts show up. I'm mostly posting this because i'm worried they aren't actually the issue and I just launched off a parts canon for no reason.
The Truck:
2008 dodge nitro, 4x4, 3.7L, auto trans, 141k(ish) miles. Bought at 79k and have never changed the plugs.
The issue:
p0300 and will not start
How it Happened:
So maybe 2-3 times in the last 10 months i've tried to start the truck and it would feel like it was stuck in this no start loop and it would shake angrily. I'd kill the key, wait a couple of confused seconds, try again and everything would work fine for months. Today coming back from a nieces birthday and about 15 miles from home it started to misfire under load. If I kept it under 2k it seemed fine but anything more than that and it would shake and misfire. I wasn't going to leave it so I limped home, took care of some stuff and went back out to run the scan tool.
the only codes i have are p0300 and p0507. 507 is high idle which I don't understand it's always idled around 800-900rpm with no issue but from what I can tell with google searching that shouldn't have anything to do with 0300.
I tried ohming out the coils but it's dark and I can't get both leads in there without blocking the light to see where i'm stabbing so in the morning i'll just be taking all the coils and plugs off for inspection and i'll ohm them out then. My plugs are probably stock so I'm hoping it's them it just seems really odd to get plug/coil failure with no specific cylinders mentioned. I've never had rough Idle issues so I don't think it's the EGR valve sticking. Also when all this happened the exhaust smelled very rich.
The Truck:
2008 dodge nitro, 4x4, 3.7L, auto trans, 141k(ish) miles. Bought at 79k and have never changed the plugs.
The issue:
p0300 and will not start
How it Happened:
So maybe 2-3 times in the last 10 months i've tried to start the truck and it would feel like it was stuck in this no start loop and it would shake angrily. I'd kill the key, wait a couple of confused seconds, try again and everything would work fine for months. Today coming back from a nieces birthday and about 15 miles from home it started to misfire under load. If I kept it under 2k it seemed fine but anything more than that and it would shake and misfire. I wasn't going to leave it so I limped home, took care of some stuff and went back out to run the scan tool.
the only codes i have are p0300 and p0507. 507 is high idle which I don't understand it's always idled around 800-900rpm with no issue but from what I can tell with google searching that shouldn't have anything to do with 0300.
I tried ohming out the coils but it's dark and I can't get both leads in there without blocking the light to see where i'm stabbing so in the morning i'll just be taking all the coils and plugs off for inspection and i'll ohm them out then. My plugs are probably stock so I'm hoping it's them it just seems really odd to get plug/coil failure with no specific cylinders mentioned. I've never had rough Idle issues so I don't think it's the EGR valve sticking. Also when all this happened the exhaust smelled very rich.
