does anyone know why my car wont start

Asked by Sep 20, 2015 at 07:38 PM about the 2004 Chevrolet Cavalier LS

Question type: Maintenance & Repair

the car has spark, fuel pressure is good, the only way the car starts for seconds is when I spray gas into the throttle body

6 Answers

101,875

Check for injector power, if none is there look for a blown injection fuse, if you have power the check for injector pulse from ECM, if no pulse then ECM is bad, if you have pulse then there is either a blockage in the fuel rail or the injectors are open or shorted out.

I have power. I used a 9 volt battery to open the injectors to relieve the fuel pressure. I then put it back together but the injectors won't fire or open.

101,875

So you have battery power on one wire on the injector plug, then get a test light and hook one end to a power supply and the other to the wire that doesn't have any power, crank the engine, the test light should flash, if it don't then chances are the injector driver is shot in the ECM, but if you want to you can unplug the ECM and run a continuity test from the injector plugs to the ECM plug just to verify that you don't have a broken set of wiring.

Thank you i will try this tomorrow after work.

When would i fine the emc on my car

101,875

The ECM is under the wheel well. you have to take the wheel well covers off from the underside,(plastic inner) of the passenger side and the ECM should be right there.

Your Answer

Cavalier

Looking for a Used Cavalier in your area?

CarGurus has 890 nationwide Cavalier listings and the tools to find you a great deal.

ZIP:

Chevrolet Cavalier Experts

  • #1
    John Saffrahn
    Reputation
    3,050
  • #2
    dandyoun
    Reputation
    1,360
  • #3
    mbar1
    Reputation
    1,220
View All

Related Models For Sale

Used Chevrolet Cobalt
44 Great Deals out of 3,577 listings starting at $900
Used Chevrolet Impala
552 Great Deals out of 35,022 listings starting at $900
Used Chevrolet Malibu
975 Great Deals out of 66,469 listings starting at $1,000
Used Honda Civic
794 Great Deals out of 69,619 listings starting at $1,350
Used Toyota Corolla
788 Great Deals out of 53,222 listings starting at $999
Used Ford Mustang
617 Great Deals out of 36,130 listings starting at $1,800
Used Ford Focus
806 Great Deals out of 54,585 listings starting at $1,000
Used Honda Accord
1,079 Great Deals out of 56,430 listings starting at $899
Used Chevrolet Equinox
999 Great Deals out of 61,723 listings starting at $999
Used Toyota Camry
997 Great Deals out of 79,612 listings starting at $1,200
Used Pontiac Sunfire
389 listings
Used Chevrolet Silverado 1500
2,272 Great Deals out of 168,160 listings starting at $1,000

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.