Page 1 of 1
2004 bonneville sle 0300 code 4th coil no spark
Posted: Tue Jan 17, 2023 3:18 pm
by Ljwilds
When driving it you need to give it more gas, idle is really ruff. Code comes up 0300. Replaced plugs for iridium gap 060, replaced wires. Tested coil. No spark on #4. Idle seems low and stalled once at stop.
Re: 2004 bonneville sle 0300 code 4th coil no spark
Posted: Tue Jan 17, 2023 11:11 pm
by 95naSTA
Sounds like a bad coil but you can always swap them and see if the problem follows.
Re: 2004 bonneville sle 0300 code 4th coil no spark
Posted: Wed Jan 18, 2023 8:49 am
by Ljwilds
Did replace the coil. Next step suggested is the Ignition control module. Is there a way to test the ICM before spending 200.00?
Re: 2004 bonneville sle 0300 code 4th coil no spark
Posted: Wed Jan 18, 2023 9:35 pm
by 95naSTA
I'm not aware of a way to test the icm.
Re: 2004 bonneville sle 0300 code 4th coil no spark
Posted: Wed Jan 18, 2023 10:57 pm
by Ljwilds
Do you know if a good site to order for the best price.
Re: 2004 bonneville sle 0300 code 4th coil no spark
Posted: Wed Jan 18, 2023 11:53 pm
by dougtoth
Contact Andrew at Bonnevilles Unlimited.
He has good used OEM ICMS.
Price is a lot less than $200.00 and they are not that cheap China junk!!!