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Topic: Clicking sound from relay in front passenger side 1995 U300 (Read 387 times) previous topic - next topic

Clicking sound from relay in front passenger side 1995 U300

Still trying to chase down no start issue on our 1995 U300. Should the relay in the panel  in front of passenger seat make a loud clicking noise when key is turned on
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #1 –
Our year earlier U300/Detroit has a relay in front of the driver's seat. Are you talking about the large silver relay? If so, it should click when the key is turned on. The ground for it (and others) is just several inches away.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #2 –
Likely describing the IGNITION SOLENOID.  One large lug has chassis battery voltage all the time.  The other large lug has that same voltage only when the ignition is on.

The ignition solenoid supplies power to those items that only operate with the ignition on-- dash HVAC fan as an example that is easy to verify.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #3 –
This a picture of it. We went and got a new one at Napa truck dealer. Still won't start
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #4 –
Batteries show 13, relay showed 13 and gauge when key is turned shows 10 volts
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #5 –
Is there a possibility the place that replaced our windshield could have pinched a wire or messed up the ignition try to start it?
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #6 –
Got the batteries out. Each measures 12.68 amps when checked with meter
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #7 –
Suspect that is 12.68 VOLTS which is very close to a fully charged 12 VDC battery.

But, while it is out, take it to any place that sells batteries and have it LOAD TESTED. 

It could show fine surface charge, but suffer a substantial voltage drop when a load is placed on it.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #8 –
Quote from: Rocky1down –
Is there a possibility the place that replaced our windshield could have pinched a wire or messed up the ignition try to start it?
Very doubtful
Hans & Marjet
1995 U300 "Ben" (#4719)
3176B Cat,4060HD,Jake
SKP#139131
Motorcade#17579
2006 Honda Element (towed)

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #9 –
We had the batteries load tested. They all tested good
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #10 –
I'm assuming that the starter does not turn the engine over, based on your posts?  Since you see the voltage drop when you turn the key to start, I'm guessing the starter or starter solenoid may be the issue.  When my starter died, it would pull the batteries down to 9.5V or and not turn over, just click or nothing at all when I turned the key to start.
Keith
2003 U320 38' #6197

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #11 –
We took the starter out yesterday and had it checked and it tested good
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #12 –
When a starter won't work I like starting at the starter solenoid and jump the solenoid.
If the solenoid won't pull in then the problem is batteries, cables or connections or the
solenoid. If the solenoid  pulls in then its starter, batteries, cables or connections. If the
starter works from jumping then it could be the relay or the starter switch or wiring.
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport
 

Re: Clicking sound from relay in front passenger side 1995 U300

Reply #13 –
Cleaned all the battery connections. Put them back in and it started right up.
Thanks for all the advice!
Susan and Bob
1995 U320CSE
40'
Cummins M11
Coach build #4730
Previous Foretravel's 1996 U280, 1995 U300

Motorcade # 17974