car is acting like it wants to miss, dies at different times
Jan 15, 2012 at 10:37 PM
Is there a way to check the individual coil packs
1989 CHEVROLET CELEBRITY
ITSDACRAZYMAILADY
- MEMBER
- 3 POSTS
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SATURNTECH9
- ✓ASE Certified Mechanic
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Any codes in the computer?Are you loosing spark to certain cylinders?If so which ones?When it dies does it restart right away?
Jan 15, 2012 at 11:26 PM
RASMATAZ
- ✓ASE Certified Mechanic
- 75,992 POSTS
Check the fuel pressure if its within specs. Test the TPS and MAP sensors-Check the coil's primary and secondary winding resistances-
Jan 15, 2012 at 11:28 PM
The primary & secondary resistance readings are what im looking for ,@ the moment im just using a timing light going wire to wire & im getting different flashes from the same pack some steady as i think they should be some slower & staggered but definitely different than it should be
Jan 15, 2012 at 11:47 PM
WRENCHTECH
- ✓ASE Certified Mechanic
- 20,761 POSTS
In theory you can test the resistance but in reality it won't help you because it changes too drastically with temperature and likely only fails the test when the coils get hot.
Jan 16, 2012 at 12:08 AM
SATURNTECH9
- ✓ASE Certified Mechanic
- 30,869 POSTS
Go buy a inline spark tester there under 10 that will tell you what the spark is doing.
Jan 16, 2012 at 12:20 AM
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