2003 cavalier miss at idle rpm 500 to a 1000

20

Asked by Jun 18, 2012 at 09:17 PM about the 2003 Chevrolet Cavalier LS

Question type: Maintenance & Repair

2003 cavalier has a miss at idle rpm goes from 500 to 1000 i relaced plugs,wires,o2senser,iacsenser,control module,intake gasket,doesent have a pcv valve but unpluged a hole in intake cause it build pressure in valve cover and put oil in intake motor smooths out higher rpm has 60 lbs fuel pressure but only has 10 lbs vacum new air filter why is this car still missing has a p0300 code

3 Answers

675

It sounds like you have a vaccum leak somewhere.

1 out of 1 people think this is helpful.
20

checked compression its 175 but cant find vacum leak ecoteck motor only has 2 vac linees brake booster and tranns spayed either on engine cant find it

2 out of 2 people think this is helpful.
2,925

every now and then those motors have intake leaks it would explain the low vacuum and random misfire

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 1997 Chevrolet Cavalier LS running rich/lean 4 answers

    Hello, I have a 1997 Chevrolet Cavalier 2.2 with 155k that has been running a crazy trim ratio. When the car is first started, which is starts fine now that I replaced the MAP, TPS, IAC valve, EGR, ...

    1997 Chevrolet Cavalier

    -

    Maintenance & Repair

  • history of timing chain or oil problems for the 2004 model? 31 answers

    My car just died after the timing chain broke off and messed up the engine....Does that sound right? the car has just over 40,000 miles on it. No oil light came on no check engine light came on. Is th...

    2004 Chevrolet Cavalier

    -

    Maintenance & Repair

  • Chevy Stalling 5 answers

    I hava 2005 automatic chevy cavalier. It gets hot and cuts off at stops and in bumper to bumper traffic but starts right back up. Engine surges. Drives alot rougher than it used to. Very loud. Doesn't...

    2005 Chevrolet Cavalier LS Sport Coupe

    -

    Maintenance & Repair

  • 2002 Cavalier Temperature Gauge Not Working? 5 answers

    I originally had posted this: http://www.cargurus.com/Cars/D... sntEmlId=42327096#msg242442 However, I finally bought an OBD ii code scanner, and got code P0118 for "Electronic Coolant Temperature (...

    2002 Chevrolet Cavalier Base

    -

    Maintenance & Repair

  • Wats ur opinion on ram air vs. cold air on a 2.4 (LD9) I4 9 answers

    1997 chevy cavalier Z24

    1997 Chevrolet Cavalier Z24 Coupe

    -

    Car Customization

Cavalier

Looking for a Used Cavalier in your area?

CarGurus has 1,076 nationwide Cavalier listings and the tools to find you a great deal.

ZIP:

Search Chevrolet Cavalier Questions

Chevrolet Cavalier Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,840
#2 dandyoun
dandyoun
Reputation 1,260
#3 mbar1
mbar1
Reputation 1,160
View All

Related Models For Sale

Used Chevrolet Malibu
767 Great Deals out of 88,063 listings starting at $1,900
Used Honda Civic
477 Great Deals out of 80,892 listings starting at $558
Used Chevrolet Camaro
136 Great Deals out of 35,100 listings starting at $1,995
Used Chevrolet Impala
544 Great Deals out of 28,509 listings starting at $700
Used Ford Focus
518 Great Deals out of 55,273 listings starting at $1,495
Used Honda Accord
679 Great Deals out of 82,247 listings starting at $500
Used Toyota Corolla
739 Great Deals out of 74,267 listings starting at $1,991
Used Pontiac Sunfire
354 listings
Used Toyota Camry
827 Great Deals out of 90,654 listings starting at $1,300
Used Ford Mustang
333 Great Deals out of 45,576 listings starting at $2,000
Used Nissan Altima
779 Great Deals out of 77,239 listings starting at $470
Used Chevrolet Aveo
17 Great Deals out of 1,702 listings starting at $999
Used Nissan Sentra
462 Great Deals out of 53,626 listings starting at $2,000