What are some of the causes of rpms jumping up and down while the car is idling? And what is the most effective way to find a vacuum leak?


Asked by Dec 12, 2015 at 11:04 AM about the 2000 Chevrolet Impala LS

Question type: Maintenance & Repair

car also dies sometimes while idling or at
a stop  sign or red light

2 Answers


Maybe a bad idle air control valve. Have you done a tuneup lately?


To find a vacuum leak look for cracked or loose hoses and get a can or carburetor cleaner. Spray it on suspected parts and listen for a change in engine idle speed.

Your Answer

Add photo

Related Questions

  • Car runs at 4000 rpm when i start it 2 answers

    I relpalced all of the shift solenoids in the trans re assembled the car and put it on the ground. Upon starting the car it runs at 4000 rpm. Someone installed an aftermarket remote starter in it ...

    2000 Chevrolet Impala LS


    Maintenance & Repair

  • 2002 impala won't idle down 6 answers

    When I crank, drive, put it in park, reverse, it won't idle down. When I drive it is have to keep my foot on the brake so it won't drive itself and that's scary!!! Please help me, I'm about to give ...

    2002 Chevrolet Impala LS


    Maintenance & Repair

  • Vacuum leak or....? 6 answers

    I got my 1972 Impala to crank, whenever I take my foot off of the gas pedal it turns off immediately, I also her an air type of noise coming from the driver side of the car when I give it gas. I d...

    1972 Chevrolet Impala


    Maintenance & Repair

  • My 2003 Impala is idling rough/dying, sputtering while idle and driving, being an all around a-hole, help? PLEASE HELP?! 12 answers

    My 03 Impala LS has been being an ass since 2013 when my temp guage on my dash stopped working and my car overheated and guess what- car seized up. $2000 later, heads had to be rehoned after I used ...

    2003 Chevrolet Impala LS


    Maintenance & Repair

  • vacuum leak on 1998 /camaro 6 answers

    Chk engine light came on - dealer indicated it was a vacuum leak and traced it back to the gas tank - said the tank need to be replaced bacuase they couldn't pinpoint the location of the leak. Car is...

    1998 Chevrolet Camaro


    Maintenance & Repair

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,510
#2 FordNut
Reputation 1,360
#3 Tom Demyan
Tom Demyan
Reputation 1,350
View All

Related Models For Sale

Used Chevrolet Malibu"
1,147 Great Deals out of 72,633 listings starting at $695
Used Chevrolet Camaro"
812 Great Deals out of 38,796 listings starting at $2,650
Used Honda Accord"
1,272 Great Deals out of 77,636 listings starting at $1,395
Used Nissan Maxima"
459 Great Deals out of 24,110 listings starting at $800
Used Nissan Altima"
1,377 Great Deals out of 87,440 listings starting at $1,195
Used Ford Mustang"
718 Great Deals out of 41,256 listings starting at $900
Used Toyota Camry"
1,593 Great Deals out of 98,101 listings starting at $895
Used Chevrolet Tahoe"
1,056 Great Deals out of 36,219 listings starting at $1,700
Used Chevrolet Silverado 1500"
2,466 Great Deals out of 143,822 listings starting at $1,995

Used Cars For Sale

2017 Chevrolet Impala LS For Sale
1,220 listings starting at $19,359
2016 Chevrolet Impala LS For Sale
32 Great Deals out of 703 listings starting at $16,900
2015 Chevrolet Impala LS For Sale
15 Great Deals out of 580 listings starting at $13,701
2014 Chevrolet Impala LS For Sale
17 Great Deals out of 363 listings starting at $11,500
2013 Chevrolet Impala LS For Sale
39 listings starting at $7,514