06 Cobalt SS Supercharged Code P0171 Shaky Idle/Acceleration Issues


Asked by Mar 14, 2016 at 03:29 AM about the 2006 Chevrolet Cobalt SS Supercharged

Question type: Maintenance & Repair

Hello! I have a 2006 Chevy Cobalt SS. It has a check engine light on. It was
flickering on and off for a few months but it's been steady on for 2 weeks.
Also, the last 3 days I have gotten a "Check Gas Cap" warning even though
the gas cap is on secure.

The car is not running as well as it used to. It seems to have issues when
I'm sitting idle and when I'm accelerating. Just kinda shaky?

I have heard it's my mass air flow sensor, 02 sensor, vacuum leak.....

I have an appointment with a mechanic this Wednesday. I believe he said it
would be $100 to diagnose the check engine light but I am trying to give
him as much information to get my car back to normal.

I also have an oil leak, but it's not that severe because I'm checking the oil
daily. The mechanic knows about the leak and agreed it's not that severe
but I will get the oil leak fixed as soon as I get the engine issue fixed. I just
want to make sure I'm prioritizing the issues with my car because money is

Thanks so much!

1 Answer


P0171 CHEVROLET - Fuel Trim System Lean Bank 1... Possible causes... - Intake air leaks - Faulty front heated oxygen sensor - Ignition misfiring - Faulty fuel injectors - Exhaust gas leaks - Incorrect fuel pressure - Lack of fuel - Faulty Mass Air Flow (MAF) sensor - Incorrect Positive Crankcase Ventilation (PCV) hose connection So I don't go to a shop for repairs, so I am not sure if he would still charge you for the diagnostics part if you were to have him work on the car, ask him on that, but he will do his own diagnostics to see what he thinks is wrong. And if there is any rust around the filler tube for gas, that could still cause a gas cap leak even tho you have it on tight, and still throw the code for that. So yes, get the engine running properly first.

Your Answer

Add photo

Related Questions

  • 06 cobalt ss supercharged 3 answers

    so on the way to work my 06 cobalt ss sc started to rattle noise came from around the air intake I got on the off ramp down shifted and when I went to push gas there was nothing I pulled into gas stat...

    2006 Chevrolet Cobalt SS Supercharged


    Maintenance & Repair

  • What is wrong with my cobalt? 3 answers

    I recently bought a 2006 Cobalt SS SC stage 2 w/ 126K and a rebuilt top end. It started hard due to a weak battery with corroded terminals so I replaced it. After that, it hasn't run the same. It's go...

    2006 Chevrolet Cobalt SS Supercharged


    Maintenance & Repair

  • Any Cobalt problems? 1 answer

    I have a 2007 Cobalt SS supercharged and I have been having problem after problem with it. I bought it in Aug and I have had it in the shop 6 times and it was also towed to the dealer cause it died on...

    2007 Chevrolet Cobalt 2 Dr SS Supercharged Coupe


    Maintenance & Repair

  • 06 Cobalt Rough Idle/Stall when stopping or quick deceleration 51 answers

    Hello All, Here is the problem I have. 06 Cobalt LT 2.2l 103065 Miles When decelerating on the freeway to come to a virtual stop for traffic, when stopping at a stop light, when pulling out of the ...

    2006 Chevrolet Cobalt LT


    Maintenance & Repair

  • Chevy Cobalt SS Supercharged used 14 answers

    Hi, i was trying to get a cobalt ss supercharged for under $10,000 and it looks like the only way is on ebay, any particular problems to be wary of???

    2005 Chevrolet Cobalt SS Supercharged


    Shopping & Pricing

Search Chevrolet Cobalt Questions

Chevrolet Cobalt Experts

#1 lightGear
Reputation 1,070
#2 FordNut
Reputation 1,000
#3 dandyoun
Reputation 890
View All

Related Models For Sale

Used Honda Civic"
1,183 Great Deals out of 58,594 listings starting at $1,295
Used Chevrolet Malibu"
1,169 Great Deals out of 72,684 listings starting at $695
Used Ford Focus"
1,210 Great Deals out of 57,458 listings starting at $1,495
Used Chevrolet Impala"
949 Great Deals out of 35,743 listings starting at $700
Used Ford Mustang"
744 Great Deals out of 41,449 listings starting at $900
Used Honda Accord"
1,316 Great Deals out of 78,667 listings starting at $1,395
Used Toyota Corolla"
1,457 Great Deals out of 67,383 listings starting at $1,295
Used Nissan Altima"
1,490 Great Deals out of 87,984 listings starting at $1,195
Used Ford Fusion"
1,466 Great Deals out of 79,563 listings starting at $1,450
Used Toyota Camry"
1,733 Great Deals out of 98,538 listings starting at $895
Used Honda Civic Coupe"
315 Great Deals out of 16,320 listings starting at $799