2005 Sunfire, will not rev past 3.5-4k rpms. Rarely 4.5-5k, in Park, D or N. 120k on car

Asked by Aug 14, 2012 at 03:29 PM about the 2005 Pontiac Sunfire Base

Question type: Maintenance & Repair

So recently my car has been running a little low on power.  She idels fine, 0-3rpms is fine in all gears, engine is very smooth up to 80mph (downhill).  Once under power or at 4k rpms in any gear or park or Neutral, the car will lose all power and start to bog down. She wont die but will no give me any more power and slowly lose it if I floor it.  Once I take it off the gas in park or neutral not drive, she either idles exremely rough or die with out trying.  To fix the rough idle I put the car into gear and give it some gas, problem solved.  Oh and check engine light will come on if im really harping on it as it dies at 4k.  Then after idleing for a little bit the light goes away.  I finally got a reading on the light and it said cylinder missfire. I have not changed the fuel filter for about 80+k. One is on order, if it fixes it ill update this asap.  

Thanks for any help!  I am in Germany and its expensive for parts and all I can order are new parts.  

1 Answer

385

YOU MIGHT BE SUFFERING FROM A CLOGGED CATALYTIC CONVERTER. IF YOU HAVE A CYLINDER MISSFIRE, IT COULD BE A FAULTY PLUG OR PLUG WIRE, COIL OR YOU MIGHT HAVE STICKING INJECTORS OR LOW FUEL PRESSURE(PUMP)

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Search Pontiac Sunfire Questions

Pontiac Sunfire Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,760
#2 Joeyadams
Joeyadams
Reputation 1,320
#3 Warren0007
Warren0007
Reputation 1,240
View All

Related Models For Sale

Used Chevrolet Cavalier
3 Great Deals out of 989 listings starting at $695
Used Honda Accord
1,050 Great Deals out of 66,925 listings starting at $1,000
Used Pontiac G6
75 Great Deals out of 4,071 listings starting at $1,975
Used Pontiac Grand Am
4 Great Deals out of 1,147 listings starting at $1,000
Used Chevrolet Impala
548 Great Deals out of 35,509 listings starting at $899
Used Pontiac Grand Prix
25 Great Deals out of 2,827 listings starting at $1,850
Used Ford Taurus
281 Great Deals out of 18,746 listings starting at $1,499
Used Ford Mustang
682 Great Deals out of 44,482 listings starting at $1,500
Used Toyota Corolla
1,003 Great Deals out of 68,556 listings starting at $1,800
Used Nissan Altima
1,282 Great Deals out of 74,438 listings starting at $1,000
Used Honda Civic
831 Great Deals out of 83,705 listings starting at $750
Used Pontiac Solstice
15 Great Deals out of 416 listings starting at $3,995

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.