cobalt sputter
Length: 3:41
Description: UPDATES ARE DOWN FURTHER!!!! READ!!!!
im buzzing at 2000 rpm's at 40 mph. i come to a stop, then i just tap the gas and get the revs up to 2000 again to just progress my way down lahser and maple road. i was on my way to my gf's art show before woodward, and then all of the sudden, kaboom! i hear a pop/backfire and then my car runs like s***. brent came to help me and make sure i didnt break down on the way to woodward. he followed me and noted i had black smoke (carbon) coming out of my exhaust, BADLY, and it smelled bad.
tim miller with the redline said it might be the cat clogged, so i took his challenge and we unbolted the dp real quick just to see if it would run good. no luck. so we kinda just laughed about it and its probably #2 that went bad considering it had the most misfires before. all i know is that this engines f***ed beyond belief. i went through 1/4 tank of gas just to get home.
now i know the dealers gotta see a problem, but im not sure if i should take it in to one of the 3 ive been to or not.
i'll get a video sometime saterday. today was my last day of school.....aparently thats when my cobalt decided to call it quits too
edit: symptoms include not exceeding 4500 rpms at all, check engine light on 100% of the time and blinks when i hit the gas. i get 10-12 mpg according to my guage as well.
well just an update, ive dropped my car off to the dealer. the guy insisted on pulling the 2.0 LSJ misfire thing again. my dad basically had to beat it out of his head that he's wrong. and since my car has 36101 miles on it, GM wont pay for the rental car until they know what the problem is after diagnoisis of the engine. so right now im carless and the dealers got it now. my dad told me that when he finds out whats wrong, hes demanding a new engine, and if they dont go for it and want to rebuild it,
update: well my dad talked to the customer service lady and she called the dealer and asked what was up with my car. my dad had called the dealer several times and he had recieved no answer from their phones, and he had been calling since the day before. so who of the any, she calls my dad back and she describes to him that they have been diagnosing it for a while, and when they had inspected the internals, they noticed that a lot of the valves are screwed up. and that its really bad. so right now they are debateing whether to a) rebuild the head assembly or b) give me a new longblock engine entirely.
so we inquired about a rental car, and the dealer still hasnt offered up one or contacted us on that. even though they already have diagnosed the problem. so i think the dealer's just trying to get back at my dad and me for having them look at this car, or that they are just trying to be pricks. either way, its just reinforceing my stance on how bad of service these dealers have.
my dad also talked to Jeff, some engineer for the ecotec, and he said that the L61 engine is notorious for this problem with the valves seating properly. he said that he owns an 06 cobalt as well and that he sees it happen in these engines all the time down where he works. my dad asked why this was, is it the customers beating on the car too much?? jeff replied, this engine is "bullet proof" you could pound this engine as hard as possible, its a solid design, our dynos have proven this, and we overall kept this engine running since 02 because of its durability. the reason that this happens is that we change suppliers every now and then, and when we do, some of these parts arent made properly when we did a supplier change with the valves, and a result was that even on new engines, the valves wouldnt seat properly and cause misfires and backfires due to this.
so there ya have it, right from the guy who designs and diagnoses these engines every day. this is fact. and he basically said that this was going to happen sooner or later with my car. and that im lucky it happened while i still have a warranty
well, thats the status of my car as of now. i'll post up an update whenever i get word of anything.
update on my car.
today my dad called the dealer. its been 7 days since we dropped it off in its horrid condition. turns out they tried to order a new engine but GM service didnt let them. instead, im getting a new Head on the engine which my dad looked up what the cost was, and it ran 2800 dollars. Smiley which is good news!
they have stated they have some of the parts now, and that they all should be in by tomarrow with hopes that it will be ready by Wednesday. i wont be getting my hopes up but id be happy if it is.
Author: jkcarcrazy
Source: YouTube
