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06-10-2008, 07:34 AM
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Gear Head
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Join Date: Aug 04, 2005
Location: North Western WI.
Posts: 544
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clicking noise in dash?
Hi guys, haven't been around here in a while, got to be spending too much time on-line etc.
Anyway,
I got my Grand G'neer on the road for the summer (finally) and now I remember that I've had a strange clicking noise in my dash for a while now, (years) that was really bugging me this weekend.
It sounds like a relay clicking or a small solenoid etc. that what ever is tripping it, is making intermittent contact like a loose wire jiggling over bumps or something. Imagine dragging a live bare wire along a metal surface making sparks etc, and how a relay or solenoid would react. The noise sounds like it is coming from behind the gage cluster, while sitting in the drivers seat.
What system in an 87 Grand Wagoneer would have a relay/solenoid that would be mounted behind the dash?
Everything seems to be working properly, (except the gas gage, it drops really fast from full) the gages don't jump, lights don't flicker etc. when the noise is happening. does it with the lights on or off. horn works with the ignition on along with the cigarette lighter.
At this point it is only a noisy relay that seems to be doing nothing?
Any ideas?
Thanks,
baja
__________________
Hello, I am Brad. I have JOCD (Jeep Obsessive Compulsive Disorder) If you can admit you might have a problem, is it really a problem?
JEEPS-N-Stuff:
1998, Grand Cherokee, dd.
1987, Grand Wagoneer, Pimped, totalled by hail storm...
1977, CJ5
1976, J10
1949, Willys Jeepsterrr
1948, Willys Jeep truck
1942, Ford 1-1/2ton, Marmon-Herrington 4x4
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06-10-2008, 08:23 AM
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Perfesser of Jeepology
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Join Date: Jun 15, 2000
Location: Carpentersville, IL 60110
Posts: 9,204
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Does it doing only with the car moving, or also when it's sitting still?
Oh, and your gas gauge is working fine, these things really do get that kind of mileage...
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Jeep Grounds
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1987 Grand Wagoneer
AMC 360/TF727/NP229
1999 Wrangler Sport
4.0L/AX-15/NV231
Quote:
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Formerly of DFW/Gun Barrel City, TX - eventually to return...
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06-10-2008, 08:25 AM
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GrimJeeperReaper
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Join Date: Jul 08, 2002
Location: Cardington, Ohio 43315
Posts: 10,248
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Does your speedo needle look like it bounces?
Maybe a nest of rattlers....lol..
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2005 Mustang Convertible...meh....
1946 Willys CJ2A, getting ready to fix up.
Too many hobbies! $$$
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06-10-2008, 08:32 AM
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Member
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Join Date: Jan 04, 2008
Location: Gastonia, NC
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If it only happens when you are moving, I'll bet its your speedometer cable. Reach up into the dash from below and you can unscrew the cable from the cluster...then pop your hood and pull it through the firewall. From there just pull the speedo cable from the housing and put lots of graphic based anti-seize lube on it....put it back together and you'll be all set.
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06-10-2008, 09:16 AM
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Gear Head
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Join Date: Aug 04, 2005
Location: North Western WI.
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It's not the speedo cable, mine does make noise after the Jeep has been sitting a while, but quiets up down the road. The noise the speedo cable makes is constant cyclical noise related to vehicle speed.
My dash noise only happens when the Jeep is running, either going down the road or even like when slowing to a stop and sitting for a stop sign.
It is a random clicking that can be quite fast and very inconsistant, like a solenoid getting a poor contact. The clicking noise is about as loud as a computer keyboard, key click. Just enough to hear it over vehicle road noise.
What all solenoids/relays are there behind our dashes?
baja
__________________
Hello, I am Brad. I have JOCD (Jeep Obsessive Compulsive Disorder) If you can admit you might have a problem, is it really a problem?
JEEPS-N-Stuff:
1998, Grand Cherokee, dd.
1987, Grand Wagoneer, Pimped, totalled by hail storm...
1977, CJ5
1976, J10
1949, Willys Jeepsterrr
1948, Willys Jeep truck
1942, Ford 1-1/2ton, Marmon-Herrington 4x4
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06-10-2008, 09:30 AM
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Perfesser of Jeepology
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Join Date: Jun 15, 2000
Location: Carpentersville, IL 60110
Posts: 9,204
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Not any that I can think of. It may be something that a PO added.
__________________
Jeep Grounds
RRV Homepage
Texas Full Size Jeep Association
1987 Grand Wagoneer
AMC 360/TF727/NP229
1999 Wrangler Sport
4.0L/AX-15/NV231
Quote:
“Freedom is never more than one generation away from extinction” by Ronald Reagan.
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Formerly of DFW/Gun Barrel City, TX - eventually to return...
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06-10-2008, 11:42 AM
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Join Date: Jul 30, 2003
Location: Normal, Oklahoma
Posts: 8,684
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[quote=YoungClayB]...put lots of graphic based anti-seize lube on it.../quote]
WOW! Now that's a Freudian slip!
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Mark B. Jones
Quote:
Originally Posted by GrandWag&Prix
Actually, now that I think about it, that could be either awesome or really terrible.
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'79 Cherokee Chief "Junaluska"
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06-10-2008, 01:58 PM
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Master Mechanic
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Join Date: Jan 14, 2005
Location: Music City, USA
Posts: 924
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There is no way I could ever hear a clicking noise under the dash. My 258 makes so much noise that I don't even use the radio. However if I did have a noise like that I would just turn up the volume of my radio and call it done. 
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06-10-2008, 02:10 PM
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Member
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Join Date: May 02, 2006
Location: Oklahoma
Posts: 153
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Could the cruise control module have something inside it to make the noise. I've never had it apart but it does hook up to the speedometer cable at some point, i think under the hood though. It also has a vacuum switch IIRC plus power running to it.
Not to mention the duct tape that mounts it could have come loose letting it flop around under there? just a thought.
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1982 Wagoneer, NP208, D44 Front, AMC 20 Rear, AMC 401, TF727, 4" suspension lift, 35X12.5 BFG MTs
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06-10-2008, 02:11 PM
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out of order
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Join Date: Jun 08, 2005
Location: Land of froot loops and cukcoo-nuts, CA
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There are a couple relays behind the dash, when I parted an '86 & an '89 both of them had a few mounted behind the dash.
Unlikely you'd be able to get @ them easily without dropping the AC unit.
Even then doubt it would be easy to find them.
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Tony
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06-10-2008, 02:13 PM
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Gear Head
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Join Date: Aug 04, 2005
Location: North Western WI.
Posts: 544
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Quote:
Originally Posted by babywag
There are a couple relays behind the dash, when I parted an '86 & an '89 both of them had a few mounted behind the dash.
Unlikely you'd be able to get @ them easily without dropping the AC unit.
Even then doubt it would be easy to find them.
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Any ideas what the relays were supposed to be for?
baja
__________________
Hello, I am Brad. I have JOCD (Jeep Obsessive Compulsive Disorder) If you can admit you might have a problem, is it really a problem?
JEEPS-N-Stuff:
1998, Grand Cherokee, dd.
1987, Grand Wagoneer, Pimped, totalled by hail storm...
1977, CJ5
1976, J10
1949, Willys Jeepsterrr
1948, Willys Jeep truck
1942, Ford 1-1/2ton, Marmon-Herrington 4x4
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06-10-2008, 03:28 PM
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Gear Head
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Join Date: Feb 26, 2004
Location: Davisburg, MI
Posts: 695
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Quote:
Originally Posted by baja
Any ideas what the relays were supposed to be for?
baja
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Pretty sure one of them is for the wipers. I have a couple under the dash of my 86, I can hear it click everytime the wipers turn on. My 90 also had a random click from under the dash that sounded like a relay, seemed to do it much more in the summer so I assumed it was something to do with the A/C. Never really bothered me enough to track it down.
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06-11-2008, 07:10 AM
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Gear Head
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Join Date: Aug 04, 2005
Location: North Western WI.
Posts: 544
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Ya know, now that you mentioned yours does it too, in the summer...
I do hear it mostly, if not only, when I have the air conditioning on.
hmmm...so is it a bad thing to have a relay going bonkers, is it something I should try to cure? or just consider it another charactoristic of my Waggy?
baja
__________________
Hello, I am Brad. I have JOCD (Jeep Obsessive Compulsive Disorder) If you can admit you might have a problem, is it really a problem?
JEEPS-N-Stuff:
1998, Grand Cherokee, dd.
1987, Grand Wagoneer, Pimped, totalled by hail storm...
1977, CJ5
1976, J10
1949, Willys Jeepsterrr
1948, Willys Jeep truck
1942, Ford 1-1/2ton, Marmon-Herrington 4x4
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06-14-2008, 08:57 PM
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Grease Monkey
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Join Date: May 17, 2007
Location: tennessee
Posts: 433
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Hope its not a Rattle Snake --- LOL
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06-14-2008, 09:39 PM
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FSJ Maniac
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Join Date: Jan 08, 2003
Location: Centennial, Colorado
Posts: 2,907
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If the relays are on the left side behind dash, that side of the AC comes off very easily.
I'd fix it ... I am not a big fan of ignoring electrical problems... too many bad things can happen.
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1986 Grand Wagoneer "Troubled Child" • tc.wagoneer.org • Facebook • KØFSJ
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