Riviera Performance
Would you like to react to this message? Create an account in a few clicks or log in to continue.

The 8th Gen Riviera Resource
 
HomeDashboardSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksLog in

 

 Ignition noise on radio, intermittent, not alternator whine

Go down 
AuthorMessage
al_roethlisberger
Junkie
al_roethlisberger

Name : Al Roethlisberger
Age : 51
Location : Sanford, NC
Joined : 2013-03-12
Post Count : 960
Merit : 24

Ignition noise on radio, intermittent, not alternator whine Empty
PostSubject: Ignition noise on radio, intermittent, not alternator whine   Ignition noise on radio, intermittent, not alternator whine EmptyThu Oct 09, 2014 9:20 pm


I noticed something new the other day while driving home, a steady ignition noise over the FM radio on all stations. It wasn't alternator whine, but more of a steady buzz that didn't seem to change much with engine RPM, if at all, unlike alternator whine which changes pitch with RPM.

I did verify that the noise was gone when the engine was off, but didn't get a chance to see if the noise was also present on non-radio CD playback.

The sound went away today so I haven't had a chance to do any other testing.

Not sure what would cause this, but I the ignition module was replaced when the shop was troubleshooting what turned out to be a bad PCM. Not sure if that could be related?

Any ideas?

Al
Back to top Go down
albertj
Master
albertj

Name :
Location : Finger Lakes of New York State
Joined : 2007-05-31
Post Count : 7750
Merit : 164

Ignition noise on radio, intermittent, not alternator whine Empty
PostSubject: Re: Ignition noise on radio, intermittent, not alternator whine   Ignition noise on radio, intermittent, not alternator whine EmptySat Nov 15, 2014 11:51 pm

Look in about a 1-foot circle of where each bit of troubleshooting was done, find and fix loose grounds.

Remove the coils and icm, clean the grounding plate, wipe on a thin even layer of dielectric OR conductive grease, reassemble.
Back to top Go down
al_roethlisberger
Junkie
al_roethlisberger

Name : Al Roethlisberger
Age : 51
Location : Sanford, NC
Joined : 2013-03-12
Post Count : 960
Merit : 24

Ignition noise on radio, intermittent, not alternator whine Empty
PostSubject: Re: Ignition noise on radio, intermittent, not alternator whine   Ignition noise on radio, intermittent, not alternator whine EmptySun Nov 16, 2014 1:14 pm

Thanks!

It seems to have magically 'gone away' in the last week, but I'll still do what you suggest as I don't like mystery events like this that just 'go away' ... as they'll probably come back.

I was thinking along the same lines thumbsup
Back to top Go down
Sponsored content




Ignition noise on radio, intermittent, not alternator whine Empty
PostSubject: Re: Ignition noise on radio, intermittent, not alternator whine   Ignition noise on radio, intermittent, not alternator whine Empty

Back to top Go down
 
Ignition noise on radio, intermittent, not alternator whine
Back to top 
Page 1 of 1
 Similar topics
-
» Trellises and ham radio
» BayW Radio.
» Save Folkwaves on BBC Radio Derby
» Generator Noise
» The BBC's cuts spell the end for Regional and local radio - time to protest

Permissions in this forum:You cannot reply to topics in this forum
Riviera Performance ::   General Tech :: Audio & Electronics-
Jump to: