my 1999 z24 with a 2.4 twin cam dies at idle what are some of things that may cause this?

Asked by Aug 08, 2014 at 09:27 AM about the 1999 Chevrolet Cavalier 2 Dr Z24 Convertible

Question type: Maintenance & Repair

my car dies at idle I can keep it going by keeping my foot on the peddle at 900 rpm

4 Answers

62,115

Is car skipping?If so you may need to change your plug,s and wire,s,If not then,may need to clean your throttle body,and may be some fuel treatment.

88,665

Idle speed control valve dirty or inoperative, minimum air rate not set to specs, a sensor misread, plus what was mentioned before. Do you have a check engine light on?

1 out of 1 people think this is helpful.
9,695

No plug wires on these. The Quad4 through TwinCam had the coils mounted to the bottom of the aluminum cover above/between the DOHC towers. There are a few common problems with your 2.4 TwinCam that you can check. Is it showing a check engine light. If so get it scanned, that will save sometime. Does it smell like it is flooding - over fueling at idle before you give it throttle and or is the motor sputtering/shaking. This is the most common issue and is usually caused by weak spark. If you have this issues you will need to inspect all the components under the above mentioned aluminum cover. The weakest link is the plastic housing that bolts to the bottom of the cover and houses the ICM, coils, leads and integrated boots. If it is cracked or warped it needs to be replaced. The foam must hold the coils to the cover to allow for a good ground and the ground strap must be in contact with the cam tower between one of the rubber isolators on the cover when in place. Usually it's an issue with the plastic cover, on this system if one component fails in the loop 2 plugs, 2 boots, 2 leads, one coil you loose 2 cylinders. The small plastic pieces on the boots sometimes break but I have had no issues there. A lot of people are converting to a regular 4 cyl coil pack and running spark plug wires to eliminate the above parts. If it runs good but still smells like fuel look for a stuck injector. If you pull the plugs to check spark you will notice fuel residue if an injector is open! I haven't had a crank sensor or ICM go on any of these cars that I have worked on yet, but a possibility. You can pull the entire assembly pull the plugs from the motor and install on the boots and ground the cover and plugs and visually check the spark. If there is not fuel smell follow tennisshoes's advice with the IAC. Check the throttle position sensor also. Good luck.

1 out of 1 people think this is helpful.
15

Correct, idle air control valve or motor, or gas pressure regulator, easy, also if speedometer does not communicate, when you stop will happen, if manual, do not know If automatic .

Your Answer

Add photo

Related Questions

Cavalier

Looking for a Used Cavalier in your area?

CarGurus has 1,084 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 2,820
#2 dandyoun
dandyoun
Reputation 1,260
#3 mbar1
mbar1
Reputation 1,160
View All

Related Models For Sale

Used Chevrolet Malibu
796 Great Deals out of 88,549 listings starting at $1,900
Used Honda Civic
511 Great Deals out of 80,658 listings starting at $558
Used Chevrolet Impala
618 Great Deals out of 29,205 listings starting at $1,300
Used Chevrolet Camaro
158 Great Deals out of 35,580 listings starting at $1,995
Used Ford Focus
541 Great Deals out of 55,231 listings starting at $500
Used Honda Accord
685 Great Deals out of 81,559 listings starting at $1,200
Used Toyota Corolla
722 Great Deals out of 74,312 listings starting at $1,790
Used Pontiac Sunfire
359 listings
Used Toyota Camry
875 Great Deals out of 91,061 listings starting at $1,300
Used Nissan Altima
764 Great Deals out of 77,502 listings starting at $470
Used Ford Mustang
301 Great Deals out of 45,096 listings starting at $2,000
Used Nissan Sentra
437 Great Deals out of 52,822 listings starting at $1,600