How do I fix codes po171 &po300 on my cobalt

Asked by Jason May 31, 2015 at 09:04 PM about the 2007 Chevrolet Cobalt SS Coupe FWD

Question type: Maintenance & Repair

I have cleaned the throttle
changed plugs &coils used lucus
injector cleaner nothing worked.
also unplunged the maf and the
rpms jumped to 4k then started
rising unplugged map no change
really need some help it would
greatly be appreciated thank you

2 Answers
1,555

Tooloose answered 8 years ago

You need to check the vehicle fuel pressure to see if the pressure is within factory specs, should be around 52- 65 psi I think , check specs with current dealer specs, this can cause po 171 and po-174 lean condition always, also check for leaking intake seals

1 people found this helpful.
Mark helpful
1,555

Tooloose answered 8 years ago

It will cause skipping/ misfiring/ lean miss especially when engine is cold

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • How do I fix codes po171 &po300 on my cobalt 2 Answers

    I have cleaned the throttle changed plugs &coils used lucus injector cleaner nothing worked. also unplunged the maf and the rpms jumped to 4k then started rising unplugged map no change really n...

    2007 Chevrolet Cobalt SS Coupe FWD

    -

    Maintenance & Repair

  • how do I know if my waterpump is bad on a 2006 Chevy Cobalt 1 Answer

    While driving my Chevy Cobalt I noticed the coolant temp rising steadily. After arriving home I checked the radiator fan which was not working. How do I know if it is the fan or water pump?

    2006 Chevrolet Cobalt LS Sedan FWD

    -

    Maintenance & Repair

  • how do i fix traction on 2007 cobalt 1 Answer

    get message to service traction. Where do I start, with the traction switch(where is it located) or the traction control module (where is it located)

    2007 Chevrolet Cobalt LS Sedan FWD

    -

    Maintenance & Repair

  • How do i fix my engine power reduced light on my 2009 chevy culbolt 2 Answers

    Were can i get my engine power reduced light fixed in san antoino tx

    2009 Chevrolet Cobalt 1LT Sedan FWD

    -

    Maintenance & Repair

  • How do i charge the battery in my 2005 cobalt? 4 Answers

    the car sat forever months. AAA jumped started and started right away. I left the car running for about a half hour than turned it off. It has been run in about 2 weeks and will not start I would ...

    2005 Chevrolet Cobalt

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

2007 Chevrolet Cobalt

Write a car review

Review another car

Shortcuts

Search Chevrolet Cobalt Questions

CarGurus Experts

  • #1
    munron
    Reputation
    8,130
  • #2
    John Carson
    Reputation
    2,270
  • #3
    MoGo
    Reputation
    1,980
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Malibu
1,016 Great Deals out of 19,816 listings starting at $700
Used Chevrolet Corvette
688 Great Deals out of 12,267 listings starting at $3,200
Used Chevrolet Impala
290 Great Deals out of 4,058 listings starting at $500
Used Chevrolet Silverado 1500
4,206 Great Deals out of 131,275 listings starting at $1,000
Used Honda Civic
1,420 Great Deals out of 29,222 listings starting at $1,200
Used Ford F-150
6,148 Great Deals out of 132,487 listings starting at $900
Used Chevrolet Colorado
966 Great Deals out of 23,007 listings starting at $900
Used Chevrolet Trailblazer
437 Great Deals out of 21,419 listings starting at $2,300
Used Ford Mustang
919 Great Deals out of 22,587 listings starting at $1,100
Used Ford Focus
428 Great Deals out of 5,323 listings starting at $750
Used Chevrolet Equinox
2,662 Great Deals out of 50,175 listings starting at $999

Used Cars For Sale

2009 Chevrolet Cobalt SS Coupe FWD For Sale
2 listings
2007 Chevrolet Cobalt SS Coupe FWD For Sale
4 listings
2006 Chevrolet Cobalt SS Coupe FWD For Sale
1 listing

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.