Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Chevrolet > Cobalt
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 04-19-2015, 03:24 PM   #1
angel_iz378
AF Regular
 
Join Date: Jan 2004
Location: Macon, Georgia
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via MSN to angel_iz378
07 Cobalt "Reduced Engine Power" message

So a few weeks ago, I go to start up my 2007 Cobalt and it doesn't start right. The major part of this is that there's no response in acceleration when I press the pedal. I get a "reduced engine power" mage on my display, all of the gauges stay at 0, and the idle is super shaky. My son's friend's step mom had a Cobalt ('08 I think, sedan, while mine's a coupe) and he said her's did the exact same thing with same message. They had to have both the Throttle Body Sensor Mass Air Flow Sensor replaced. Would this be a safe assumption that mine could be the same issue? My boyfriend has already replaced the air filter & cleaned the throttle body in an attempt to come up with any other solution. Please help! It has been sitting in our apartment parking space for the last 2 weeks & I work 20 miles away from home. Having my live-in son drive me back & forth to work is expensive on gas(80 miles per day in a lowered 2" 2000 Mitsubishi Mirage with 250K miles already) , and I start back college in a month so I'm definitely gonna need my own transportation again. I just can't afford to take it to a repair shop for them to charge me a grand to fix it, when it may be something my boyfriend can replace.
__________________
I love humanity. It's people I can't stand.-Gil Grissom

Check out My NEW 2007 Cobalt LT "Pheonix" @ Car Domain
angel_iz378 is offline   Reply With Quote
Old 04-19-2015, 04:58 PM   #2
Tech II
AF Fanatic
 
Join Date: Jul 2011
Location: Worcester, Massachusetts
Posts: 5,017
Thanks: 70
Thanked 618 Times in 610 Posts
Re: 07 Cobalt "Reduced Engine Power" message

Tech II is offline   Reply With Quote
Old 04-19-2015, 06:51 PM   #3
angel_iz378
AF Regular
Thread starter
 
Join Date: Jan 2004
Location: Macon, Georgia
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via MSN to angel_iz378
Re: 07 Cobalt "Reduced Engine Power" message

Quote:
Originally Posted by Tech II View Post
I notice this is a truck he's working on. Wouldn't this be different from the setup for a Chevy Cobalt?
__________________
I love humanity. It's people I can't stand.-Gil Grissom

Check out My NEW 2007 Cobalt LT "Pheonix" @ Car Domain
angel_iz378 is offline   Reply With Quote
Old 04-20-2015, 11:21 AM   #4
MikeCStig
AF Regular
 
Join Date: Dec 2012
Location: Portland, Maine
Posts: 438
Thanks: 0
Thanked 47 Times in 47 Posts
Re: 07 Cobalt "Reduced Engine Power" message

Your cobalt is quite likely to have a similar issue. Throttle-by-wire systems are becoming more and more common, and it's very likely that your cobalt has one. These systems, I think, are a pain in the ass for reasons like this. Anyway, what was shown in that video is a good place to look for the problem.
__________________
"Ok, systems check; the battery is discharging, the oil temperature is very high, the oil pressure is very low, the engine temperature is off the end of the scale, I'm running out of petrol... but the clock is correct!"
-James May, in an old, worn out Lamborghini purchased for less than £10,000.
MikeCStig is offline   Reply With Quote
Old 04-21-2015, 07:33 AM   #5
Tech II
AF Fanatic
 
Join Date: Jul 2011
Location: Worcester, Massachusetts
Posts: 5,017
Thanks: 70
Thanked 618 Times in 610 Posts
Re: 07 Cobalt "Reduced Engine Power" message

I have seen throttle bodies, needlessly replaced, because of an intermittent wiring problem.......all TAC systems basically work the same way.....

This system uses sensors on the throttle body(can't be replaced) and also a sensor on the gas pedal....you would need a scan tool, like a Tech II, to check these sensors.....

But more often than not, a visual inspection, like in the video, can save you some big bucks....
Tech II is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD


Tags
cobalt , engine , power , reduced
Go Back   Automotive Forums .com Car Chat > Chevrolet > Cobalt

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:47 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts