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

365

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 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • How often should the oil be changed? My 2005 Sunfire has only 62,000 miles. 3 answers

    I've been getting the oil changed every 4,000-5,000 miles since I bought the car, but friends tell me that with such low mileage, I could wait longer between changes. What's the best interval, in y...

    2005 Pontiac Sunfire Base

    -

    Maintenance & Repair

  • 2000 sunfire revs up and down when below 2000 rpm???? 7 answers

    i have a 2000 sunfire that revs up and down when below 2000 rpms. ive changed the intake manifold gasket, injector o rings, IAC valve, and the map sensor. and still no change any ideas??? thanks

    2000 Pontiac Sunfire GT Coupe

    -

    Maintenance & Repair

  • 2005 Pontiac Sunfire No Start 1 answer

    Car has acted up a couple times in the past two years; either dying once after starting or dying once in traffic. Each time it fired up and was fine. Went to go to work the other day and it didn't...

    2005 Pontiac Sunfire Base

    -

    Maintenance & Repair

  • 2003 Pontiac Sunfire Trac Off/Engine Light 12 answers

    For the past week the trac off and engine light on my sunfire has constantly stayed lit upon starting the car and during driving. The car is running fine/driving fine, no strange sounds or anything li...

    2003 Pontiac Sunfire Base

    -

    Maintenance & Repair

  • I got a 99 pontiac sunfire with 2.2 will not rev up 1 answer

    To start the car u have to hold the throttle on the floor then will not rev up past 1500 Rpms when this happened I was running down the highway at 70 and it just would not rev up

    1999 Pontiac Sunfire 4 Dr SE Sedan

    -

    General

Search Pontiac Sunfire Questions

Pontiac Sunfire Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,590
#2 Joeyadams
Joeyadams
Reputation 1,310
#3 Warren0007
Warren0007
Reputation 1,230
View All

Related Models For Sale

Used Chevrolet Cavalier
1,333 listings
Used Pontiac Grand Am
1,646 listings starting at $1,995
Used Ford F-150
2,693 Great Deals out of 211,512 listings starting at $1,000
Used Pontiac Grand Prix
28 Great Deals out of 3,715 listings starting at $1,100
Used Pontiac G6
78 Great Deals out of 5,112 listings starting at $499
Used Ford Mustang
362 Great Deals out of 44,353 listings starting at $1,000
Used Honda Civic
669 Great Deals out of 77,405 listings starting at $1,000
Used Chevrolet Cobalt
43 Great Deals out of 4,796 listings starting at $1,500
Used Mitsubishi Eclipse
23 Great Deals out of 1,517 listings starting at $2,498
Used Ford Focus
699 Great Deals out of 58,603 listings starting at $995
Used Honda Accord
812 Great Deals out of 81,598 listings starting at $899
Used Toyota Camry
1,101 Great Deals out of 96,247 listings starting at $1,250
Used Hyundai Accent
185 Great Deals out of 12,580 listings starting at $150