What is the reason for engine retreat while driving?

5

Asked by Apr 11, 2015 at 07:48 AM about the 1999 Hyundai Elantra

Question type: Maintenance & Repair

I drive Hyundai avante automatic gear with lean burn system on the engine.
while driving on steady speed, things are ok. But if I slow down a bit and try to accelerate again, it takes long time and RPM starts jumping up and down. I have noticed also that when I start AC while engine is idle, RPM keeps jumping between 700 - 300. Same happens when I put gear on drive if I keep pressing the brake

1 Answer

210,035

Any lights lit up on the dash? Sounds like a vacuum leak or a dirty throttle body or an issue with the idle control valve. When was the last time you check the spark plugs and ignition components? Change your filters?

Your Answer

Add photo

Related Questions

  • Engine Overheating 15 answers

    Nobody I talk to can directly answer this question for me: Just because me heater core has a small leak, why would that cause my engine to overheat randomly? Reservoir is always full, there are n...

    2011 Hyundai Elantra GLS

    -

    Maintenance & Repair

  • Engine stalls / hesitations at idle and low acceleration 66 answers

    Model: 1999 Hyundai Elantra GLS 2.0l DOHC Odometer: 78,000 Recent work: replaced MAF with new, cleaned ignition plate, ran through 1 tank with Techron fuel system cleaner. The problem has a few vari...

    1999 Hyundai Elantra 4 Dr GLS Wagon

    -

    Maintenance & Repair

  • 2012 hyundai elantra will not start or crank 4 answers

    The car wouldn't crank or start when I got to the gas station. After multiple tries with putting the car shifter in park to neutral and switching the gears it finally started. I called the dealers...

    2012 Hyundai Elantra GLS

    -

    Maintenance & Repair

  • engine rpm surging highand low at idle and driving speed. 1 answer

    Engine rpm surges at idle and at highway speeds. Engine goes high and low, up and down. Can you help.

    2000 Hyundai Elantra GLS

    -

    Maintenance & Repair

  • 2010 Hyundai Elantra stopped moving what is the possible reason ? 7 answers

    The car stopped moving suddenly . I can start the engine normally , but when I put the gear on the drive " D " or reverse " R " or neutral " N " the car don't move . I checked the gear with different ...

    2010 Hyundai Elantra

    -

    General

Search Hyundai Elantra Questions

Hyundai Elantra Experts

#1 pittgirl
pittgirl
Reputation 1,930
#2 Carrie Shelton
Carrie Shelton
Reputation 1,350
#3 tenspeed
tenspeed
Reputation 990
View All

Related Models For Sale

Used Hyundai Sonata
995 Great Deals out of 50,006 listings starting at $700
Used Honda Civic
1,143 Great Deals out of 65,145 listings starting at $1,195
Used Toyota Corolla
1,336 Great Deals out of 68,327 listings starting at $1,399
Used Honda Accord
1,200 Great Deals out of 78,037 listings starting at $969
Used Toyota Camry
1,482 Great Deals out of 100,777 listings starting at $700
Used Hyundai Accent
281 Great Deals out of 13,116 listings starting at $2,295
Used Nissan Altima
1,129 Great Deals out of 85,763 listings starting at $695
Used Ford Focus
1,254 Great Deals out of 58,946 listings starting at $1,395
Used Nissan Sentra
762 Great Deals out of 52,814 listings starting at $1,800

Used Cars For Sale

2017 Hyundai Elantra For Sale
51 Great Deals out of 36,064 listings starting at $9,013
2016 Hyundai Elantra For Sale
124 Great Deals out of 2,527 listings starting at $8,993
2015 Hyundai Elantra For Sale
174 Great Deals out of 2,691 listings starting at $7,995
2014 Hyundai Elantra For Sale
86 Great Deals out of 1,555 listings starting at $7,990
2013 Hyundai Elantra For Sale
341 Great Deals out of 5,586 listings starting at $5,400