Question about Cars & Trucks
Replaced plugs, wires and coil pack on #2 which fires cyl #5. Code P0305 continues to prompt with misfire. Repair shop assured me it was injector in cyl #5. Replaced it and still misfires. I suggested checking the crank sensor since it detects misfire. I need help before shop eats me alive financially.
If you had code P0305, I don't know why they would have done anything to the #2 cylinder but if they have already replaced the plugs, wires and injector; here are a few more items to check:
1) Check connections from ECM. Look for any corrosions or bent/broken pins.
2) Check the fuel line pressure
3) Check the engine compression
4) And if the above are good, then you will probably have a defective ECM
Posted on Nov 28, 2014
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Posted on Jan 02, 2017
How many miles on the plugs and wires? Misfire can be caused by either plugs or wires, after that check the injector for that cylinder. Let me know what u find. Curt
Posted on Mar 11, 2009
SOURCE: 2003 Chevy Venture misfiring
The injector is a good possibility, although you should check for spark in the wire first, as the electrical is the weakest link in the system. Put a spare plug in the end of the wire with the plug resting on metal, then have someone crank the van to see if you have spark that far, test and replace spark plug, (do not get shocked!) then look into a new injector or a good cleaning.
Posted on Jul 17, 2009
did you check the injector pulse on that cylinder and it also could be the pcm , i had a taurus and a sable with good coils stop firing 2 cylinders and it was the pcm ,the code it gave was secondary coil but changed the pcm and it worked fine
Posted on Aug 29, 2009
if you have a coil on plug system, or a waste spark system.... swap coils and see if the miss follows the coil.... voila... that'll fix it.
Posted on Sep 12, 2009
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