Relays ???? - VTXOA
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post #1 of 9 (permalink) Old 03-30-2019, 08:42 PM Thread Starter
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Relays ????

2005 VTX1800C1

What are the 2 relays that are under the right side cover ?

from right to left: fuses, turn signal/position relay........but what are the other 2 ??
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2005 Honda VTX 1800C1....5,700 miles;
1982 XJ750 Maxim, 18.5k miles, original owner
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post #2 of 9 (permalink) Old 03-30-2019, 09:28 PM
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One is the Engine Stop Relay(ESR), the other is the Fuel Pump Relay(Fuel cutoff Relay FCR)
Hint: FCR has TWO Black/White wires.

If you stare & compare the Fuel Pump schematic to your relays you can make a definite identification of either one..
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File Type: jpg 1800 02-03 fuel pump test.jpg (221.2 KB, 10 views)
File Type: jpg 1800 fuel pump schematic.jpg (311.5 KB, 9 views)
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2005 1300c Red, Mustang seat, HK 2.5 straights. Leds for safety-front & back. 193,118 VTX miles

Last edited by Hans&Feet; 03-31-2019 at 09:36 AM. Reason: decision to identification
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post #3 of 9 (permalink) Old 03-30-2019, 10:12 PM Thread Starter
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Thanks Hans....I see it now in my 2002-2008 VTX1800C/F Service manual in the Fuel Section & the Schematics......

I just overlooked it........

Thanks again.....


2005 Honda VTX 1800C1....5,700 miles;
1982 XJ750 Maxim, 18.5k miles, original owner

Last edited by Bilge; 03-30-2019 at 10:22 PM.
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post #4 of 9 (permalink) Old 03-30-2019, 10:25 PM Thread Starter
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On a unrelated matter, what is this WAX Valve I read about......

Is it associated with the automatic choke on our 1800's.....??? Just curious......

Does it expands or contracts according to temp of engine and adjusts the startup RPM's ??

I am correct here ?


2005 Honda VTX 1800C1....5,700 miles;
1982 XJ750 Maxim, 18.5k miles, original owner
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post #5 of 9 (permalink) Old 03-31-2019, 07:57 AM
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Quote:
Originally Posted by Bilge View Post
On a unrelated matter, what is this WAX Valve I read about......

Is it associated with the automatic choke on our 1800's.....??? Just curious......

Does it expands or contracts according to temp of engine and adjusts the startup RPM's ??

I am correct here ?

YES. it IS the coolant temperature controlled Fast Idle... NO CHOKE..

it does have a few issues over time.. not real common. YET.

it can stick... maybe in cold mode or hot mode...
moisture oxidizes its body and then sticks.

mine stuck about 4 years ago... in fast idle mode... a little cleaning and done.


Good digging Sir...



2005 VTX1800 F, type II, Silver Tribal, 88,000 Miles, Purchased Feb, 2005.
MTC clutch & springs.. K&N Air Filter. Garmin 2597 GPS.

Last edited by chuck_VTX F; 03-31-2019 at 07:59 AM.
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post #6 of 9 (permalink) Old 03-31-2019, 12:03 PM Thread Starter
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Thanks Chuck for the explanation.......

What is the official name of this part......

Would like to look it up in my manual.....

My guess it would be in the Fuel System ( Programmed Fuel Injection ) Section of the manual ????


2005 Honda VTX 1800C1....5,700 miles;
1982 XJ750 Maxim, 18.5k miles, original owner
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post #7 of 9 (permalink) Old 03-31-2019, 12:11 PM
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Wax valve, I posted this PDF in the last week...

If you review a 12 months of threads on the 1800 board you will find about every issue that ever existed.
Look at Step by Step board also.
Attached Files
File Type: pdf Wax Valve Info with pix by VTX110ci.pdf (284.1 KB, 1 views)

2005 1300c Red, Mustang seat, HK 2.5 straights. Leds for safety-front & back. 193,118 VTX miles
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post #8 of 9 (permalink) Old 03-31-2019, 12:12 PM
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Quote:
Originally Posted by Bilge View Post
Thanks Chuck for the explanation.......

What is the official name of this part......

Would like to look it up in my manual.....

My guess it would be in the Fuel System ( Programmed Fuel Injection ) Section of the manual ????


https://www.bikebandit.com/oem-parts...1108#sch319397
https://www.ebay.com/i/191929229393?chn=ps
Honda part number 16046 mch 003
Name is Wax Assembly...
its bolted to the rear side of the throttle body..


manual page 5-70 and 5-71 .. on my manual
its called a Starter Valve in the service manual..






2005 VTX1800 F, type II, Silver Tribal, 88,000 Miles, Purchased Feb, 2005.
MTC clutch & springs.. K&N Air Filter. Garmin 2597 GPS.

Last edited by chuck_VTX F; 03-31-2019 at 12:25 PM.
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post #9 of 9 (permalink) Old 03-31-2019, 12:22 PM Thread Starter
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Thanks guys .....info is much appreciated......


2005 Honda VTX 1800C1....5,700 miles;
1982 XJ750 Maxim, 18.5k miles, original owner
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