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06-26-2019, 07:23 PM
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#1
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4 Rivet Member
1987 34.5' Airstream 345
Menomonee Falls
, Wisconsin
Join Date: Jul 2010
Posts: 424
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Drivers side valve cover relay.
Hey,
What is the function of that relay on the drivers side valve cover. It's got 4 wires going into it. It's about 2 3/4 wide about an inch and a quarter long and about 3/4 on an inch thick. I ask, because the connection is all funky. Almost like it gets hot and melts a little.
Is it nessessary. Who does it relay. Thanks DJ
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06-27-2019, 12:19 PM
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#2
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Rivet Master
1984 31' Airstream310
Honokaa
, Hawaii
Join Date: Jun 2010
Posts: 993
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There might be a starter relay in that neighborhood.
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06-27-2019, 07:21 PM
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#3
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4 Rivet Member
1987 34.5' Airstream 345
Menomonee Falls
, Wisconsin
Join Date: Jul 2010
Posts: 424
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Hey,
It could be a starter relay. In the front dr side, there are wires that are the same size and color as these going to the relay. Could be blinker or marker light things. I haven t really spent to much time thinking about it. Just thought maybe someone may know about it. Thanks DJ
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06-28-2019, 07:46 AM
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#4
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,116
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The relay on the passenger side that is mounted on the bracket holding the dip tube is a starter relay to help in hot start situations. The relay on the driver side is most likely an emissions relay. At least it was in 86.
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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06-29-2019, 06:02 AM
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#5
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4 Rivet Member
1987 34.5' Airstream 345
Menomonee Falls
, Wisconsin
Join Date: Jul 2010
Posts: 424
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Hey,
I think your right. When we bought this unit, it had no emessions stuff on it. It doesn't appear to go anywhere, or do anything. Thanks, I lol just leave it there plugged in. It's not hurting anything. Thanks again. DJ
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06-30-2019, 06:35 PM
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#6
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Rivet Master
Currently Looking...
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Join Date: Mar 2008
Posts: 2,385
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Is this the relay you're talking about? I've been trying for 10 years to figure out what it does.
__________________
May a Firefly land upon your shoulder
and bring you good luck, good fortune, and abundance.
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07-01-2019, 03:28 PM
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#7
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Rivet Master
1984 31' Airstream310
Honokaa
, Hawaii
Join Date: Jun 2010
Posts: 993
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If anybody has a part number or source for that starter relay, I need one.
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07-01-2019, 04:05 PM
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#8
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Rivet Master
1974 20' Argosy 20
Richmond
, Kentucky
Join Date: Jan 2003
Posts: 9,116
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This is the one I used.
ford starter relay
__________________
Air forums # 1674
1974 20' Argosy Motor Home
1975 24' Argosy Motor Home
1974 31' Excella trailer (parting out, as of 4/1/2015 I have wheels & windows left to sell)
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07-01-2019, 05:55 PM
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#9
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4 Rivet Member
1987 34.5' Airstream 345
Menomonee Falls
, Wisconsin
Join Date: Jul 2010
Posts: 424
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Hey,
Yup, that's the one. It's got a yellow,blue, black, and I think a white wire.
I'm thinking it's got something to do with the outside marker lights.
Could it be a voltage regulator for lights? That wire group goes down the left side of the motor by the master cylinder. DJ
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07-05-2019, 03:25 PM
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#10
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Rivet Master
Currently Looking...
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Join Date: Mar 2008
Posts: 2,385
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I figured out what this is...engine speed switch.
see the following link for an explanation...
https://www.autozone.com/repairguide...00c1528004c499
__________________
May a Firefly land upon your shoulder
and bring you good luck, good fortune, and abundance.
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07-06-2019, 05:44 PM
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#11
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4 Rivet Member
1987 34.5' Airstream 345
Menomonee Falls
, Wisconsin
Join Date: Jul 2010
Posts: 424
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Hey,
Wow, you are something, you took the time to look that up? Thanks, who d ever thing that relay had something to do with the carberator.
Well, I now have a FI tech fuel injection system installed on the 454. So this relay is not needed. You think I should disconnect it? Could it mess with the timing being it works with the tach. Thanks again, DJ
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07-06-2019, 08:10 PM
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#12
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Rivet Master
Currently Looking...
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Join Date: Mar 2008
Posts: 2,385
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If you live in a state that does not require smog checks which I assume you do since you installed a FI system, you could remove it. It only takes a tach signal from the distributor to turn on/off the relay at that certain drop in rpm. So no affect on any other operation of timing etc.
One of the reasons I finally wanted to figure out what it was for was in case it went bad out on the road and I was wondering if it would stand me. I’m not worried about it now.
I’m jealous because I would love to remove the Quadra jet and install a throttle body FI like you did but living in California, I can’t change or remove a single thing and still be smog compliant.
Oh boy, I can here the non-Californians chiming in already, but I have to tell you that I’ve lived here for 52 years and it sure is nice to be able to breath fairly clean air. For example, my tool truck is a clean idle diesel and it sure is nice to be able to let it run all day in order to run the A/Cs.
If I were you, I would at least keep all the old carburetor and smog parts for that day when you might sell your coach and that one and only buyer lives in one of the ever increasing in numbers smog states.
__________________
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and bring you good luck, good fortune, and abundance.
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