The tach shows a redline of 6500 rpm but last night I noticed that the fuel started to cut off at about 6250 rppm or so, is this about right for everyone else? Thanks for any info folks

 

Try closer to 6600-6800RPM. Mine seems to cut off right around there.

Peak power is made at about 6400RPM. Second gear pull

 

Strange then that my car is cutting off at 6250ish. I just got the car this week but I have not beaten the crap out of it, just showing it a few revs I wonder if it will "loosen" up after a few more miles on the clock?

 

It should loosen up after your break in. You're probably not hitting 12 psi yet either. Give it some time

 

I've got over 6000 miles on my SS/SC now and it still cuts off at about 6100 rpms. I read on another forums that the RL's have the same issue, and it basically has to do with the guages being inaccurate and slow to respond.

 

so the cobalt ss/sc doesn't have a rev limiter just a fuel cut off?

 

I test drove a few SS's and one of them when I was driving it cut the fuel at about 6.1k and the other one rev'ed all the way to redline. The one I ended up buying I did not beatup like the other ones but after I broke it in it rev's up to redline no problems. strange that one did it one did not do it with about the same amout of miles on it and driving it about the same.

fake edit: that is all

 

just want to make sure of this. so at the redline it doesn't just cut fuel and fall on it's face it will bounce on the rev limiter? this is important to me as when we autocross there maybe times where we don't want to shift and let it bounce and than go on

 

So are these cars actually cutting the fuel at 6100 ish or are the gauges inaccurate?

 

I don't believe it cuts the fuel as I have hit the limiter often racing the car.
It cuts the ignition and yes it will bounce nicely, have fun

 

according to the GM literature, the official limiter is at 6450... about 550 too low...

 

This is the first I've heard about the Cobalt SS S/C having a "slow" tach. I knew the Ion Redline had an issue with that, but I figured they had worked it out on the Cobalt

I mean seriously, how hard could it be to build an accurate tachometer?? Its not like it has yet to be accomplished, almost every car these days has a tach and most are spot on. So why can't they just get it calibrated right??

What do you Cobalt owners think?? Does the Tach seem slow??

Perhaps someone has some insight on this issue.

 

My cobalt cut out at 6850 RPM's when I did my 3rd gear dyno pull. I have autotap logs of the event. At 6850 rpm's the throttle closed down to about 35% if I recall correctly.

 

I revved the engine a little in the driveway earlier, and sure enough, the tach definately looked slow. When I let off the throttle, I watched the tach go up a couple hundred more rpm's before it peaked and dropped. So when I hit the limiter and it shows 6100 rpm's it's probably actually at 6500 (never noticed if the needle kept going up after I hit it because I've always been too busy cussing). Seems like some people have the same thing, and some don't. So I think that'll be another thing to add to my ever growing "needs to be fixed" list on my next trip to my dealer.

 

Just wondering if this is something that I should have checked out or not

 

i gotten right under 7 a couple times! especially when i dont wanna shift first in a race
gives you that extra edge!