2001 hyundai elantra starts and idles but has no power. almost feels like a plugged exhaust. or like it is only running on 3 cylenders.

Asked by Dec 10, 2011 at 11:32 AM about the 2001 Hyundai Elantra GLS Sedan FWD

Question type: Maintenance & Repair

happened all of a suuden while driving. could it be a timing belt or bad sensor

14 Answers


Sounds like you have a plugged converter.

3 people found this helpful.

could be a couple of things. if the check engine light is on and flashing you probably have a misfire causing the concern. if the light is just on solid it could be a plugged convertor. if its a plugged convertor it could be covered under warranty still by a dealer. this particular convertor is attached to the manifold and has been known to crack so hyundai extended the coverage.


i also have the same problem and the light is flashing all the time and my car is running rough any ideas

2 people found this helpful.

if the light is flashing you have an active misfire that could cause damage to the engine. more then likely if its idling rough its probably plug wires or spark plugs but if these both seem ok it could also be a coil. less likely , but i have seen it is an intake gasket leaking causing too much air in the cylinders acting like a vacuum leak. you can usually hear the air sucking into the intake where the gasket cracks if thats the case. bbut i would check the plug wires first. just spray a light mist of water on the waires and see if it starts running worse. or with the vehicle off visually inspect the wires for arcing.(this will look like little lightning bolts on the wires). also check the inside of the wire where the plug sits visually for arcing

3 people found this helpful.

thanks ill give it try cheers ill let you know how i get on

1 people found this helpful.

hi james i tried what you said and one lead is arcing the second one from the coil ive swaped the spark plugs and same thing happens so do you think that plug lead is broken


sounds like it.id replace the plug wires. also id check the spark plugs to make sure none of the porcelin on the plugs is carbon tracked


any answers on idle but no power?

2 people found this helpful.

did plugs wires new cat


still no power after plug wires and a convertor? have you checked for an intake gasket leak?

1 people found this helpful.

just did sprayed brake clean around intake

1 people found this helpful.

i tke it its not leaking then, check engine light on? if so any idea what codes there are?

1 people found this helpful.

I also am having an issue like this...I took it to Autozone to have the codes read. The light is on and is solid (not flashing) but the code came up as a cylinder 4 misfire. I'm hoping it's not the converter? If its within the cylinder itself, what all could it be? I replaced the spark plug just to be safe, but no difference. It could still be the plug wire, the coil...am I missing anything? Any ideas?

1 people found this helpful.

I was at a light and went to take off but there was no power. It idles fine and the engine light is on but when I pin it it wont go hardly at all. No stumbling seems to run fine. What could it be?

5 people found this helpful.

Your Answer:


Looking for a Used Elantra in your area?

CarGurus has 47,213 nationwide Elantra listings starting at $1,700.


Hyundai Elantra Experts

  • #1
  • #2
    Carrie Smith
  • #3
View All

Related Models For Sale

Used Hyundai Sonata
532 Great Deals out of 47,315 listings starting at $1,000
Used Honda Civic
487 Great Deals out of 44,964 listings starting at $1,150
Used Toyota Corolla
748 Great Deals out of 64,214 listings starting at $1,495
Used Toyota Camry
882 Great Deals out of 72,153 listings starting at $1,000
Used Honda Accord
719 Great Deals out of 103,450 listings starting at $849
Used Hyundai Accent
272 Great Deals out of 13,179 listings starting at $1,999
Used Nissan Altima
867 Great Deals out of 62,119 listings starting at $1,000
Used Kia Optima
358 Great Deals out of 29,587 listings starting at $1,200
Used Nissan Sentra
595 Great Deals out of 46,792 listings starting at $990
Used Ford Focus
533 Great Deals out of 75,634 listings starting at $799

Used Cars For Sale

2018 Hyundai Elantra For Sale
14 Great Deals out of 29,028 listings starting at $10,466
2017 Hyundai Elantra For Sale
115 Great Deals out of 5,933 listings starting at $8,590
2016 Hyundai Elantra For Sale
63 Great Deals out of 3,007 listings starting at $5,445
2015 Hyundai Elantra For Sale
129 Great Deals out of 2,984 listings starting at $6,500
2014 Hyundai Elantra For Sale
46 Great Deals out of 1,196 listings starting at $4,725

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.