Alright well here goes... I have been having a problem with my cobalt for a while now.. I just havn't had time to take care of it, and with summer comming around the corner (and gas prices spiking $4.00+) I wanna get it taken care of.

1. My car gets about 19-20 mpg city... when it is suppose to get 26. I know your probably thinking i'm ballin around town at full rpm since it is a manual... The sad thing is... I am really not... I keep my chift point @ 3k or less (i know... slow... but still) and my gas mileage doesn't improve in the slightest. I thought maybe it was the gas... but the only gas that has ever been in this car has been shell. Then I thought it might have been my feul injectors, cleaned them in an autoclass lab... decent power increase, but no change in MPG efficiency. the car has exacrly 25,100 Miles on it. So i'm a little stuck in determining what the issue is.

2. This one may be related to the last, Sometimes if my car is idling... instead of idling at 1k RPM, it bounces between 1200 and 8-900 (i'm guessing since our RPM meters arentthat specific) This happens regarless of AC being on or off, and clutch being engaged or car just in plain neutral... Any ideas?

Also I tried our loving search engine and found nothing of any relevence... so if I missed any previous answer... sorry -=shrugs=-

Thanks! -Stephen.

Alright well here goes... I have been having a problem with my cobalt for a while now.. I just havn't had time to take care of it, and with summer comming around the corner (and gas prices spiking $4.00+) I wanna get it taken care of.

1. My car gets about 19-20 mpg city... when it is suppose to get 26. I know your probably thinking i'm ballin around town at full rpm since it is a manual... The sad thing is... I am really not... I keep my chift point @ 3k or less (i know... slow... but still) and my gas mileage doesn't improve in the slightest. I thought maybe it was the gas... but the only gas that has ever been in this car has been shell. Then I thought it might have been my projectors, cleaned them in an autoclass lab... decent power increase, but no change in MPG efficiency. the car has exacrly 25,100 Miles on it. So i'm a little stuck in determining what the issue is.

2. This one may be related to the last, Sometimes if my car is idling... instead of idling at 1k RPM, it bounces between 1200 and 8-900 (i'm guessing since our RPM meters arentthat specific) This happens regarless of AC being on or off, and clutch being engaged or car just in plain neutral... Any ideas?

Also I tried our loving search engine and found nothing of any relevence... so if I missed any previous answer... sorry -=shrugs=-

Thanks! -Stephen.

* I wish my projectors made me gain power
* 1k is a bit high mine idles at about 750-800
* Well i you looked for projectors causing power loss or bad fuel economy you wont find anything

haha yea that cracked me up too.

:lol: oops... spell check addition to the forums? lol no.. that was stupidity on my part :lol: Anyway... ya My INJECTORS :cssNET:

sorry... I have had a LONG day.

Might wanna just bring it to the dealer and have them reflash the comp in the car. I know some folks have had issues before and done that and it was fixed.

My crazy driver mod eats my gas up and I still get 24.5 around town :p

Might wanna just bring it to the dealer and have them reflash the comp in the car. I know some folks have had issues before and done that and it was fixed.

My crazy driver mod eats my gas up and I still get 24.5 around town :p

you SUCK! >< I wonder if I should hunt some one down to just throw the sport flash on there and be done with it XD :lol: (and sorry no, I don't street race... too many cops and too many new crushing laws in my area... Sadly no dragstips either... gotta go all the way to fontana ><)

not just anyone can just go and put a tune on your car... there are two people one beign the dealer, and the other being trifecta. Your dealer would have to bee really cool inorder to do it, and if you do it through trifecta they will charge a good bit... oh yeah also i don't know if you use the 08 tune since your ECUs are different... 05/06 have the same ECU and 07/08 have the same ECU