Something still seems wrong
Cruiser
Joined: Apr 2011
Posts: 150
Likes: 1
From: Denver
I'm not saying the problem has anything to do with Fuel Moto. But, if anyone starts a thread about which tuner to get its always "get th PCV from Moto!" And the next thread down is something about water and a PC. Hence the "I don't care how good their customer service is" quote. So ok their service is great. I wouldn't buy a PCV just because they send it already flashed and it is "easy".
Club Member
Joined: Feb 2008
Posts: 11,483
Likes: 39
From: Passaic County, NJ
Rich, I absolutely respect your opinions but I've had Dielectric grease between my ECM/PCIII for well over a year. That was the result of washing my bike and getting water inside my connection. There was about a tablesoon worth of water inside that connection. Yes my connector was under the seat, but what I think is that since the Mustang seat doesn't cover as much as the stock or even the sundowner water has an easier path to the important stuff.
Since the connections can get exposed to water, having some sort of level of protection
My bike starts and runs fine every time with the grease installed. Just saying.
Since the connections can get exposed to water, having some sort of level of protection
My bike starts and runs fine every time with the grease installed. Just saying.
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
Vic, I am not saying don't use it, just saying far too many on here present it as a cure all, it has some disadvantageous that need to be considered.
Just having the connector under the seat may not be enough, I had mine under the ECM itself. It is a shame that connector is not as waterproof as a typical molex connector.
Just having the connector under the seat may not be enough, I had mine under the ECM itself. It is a shame that connector is not as waterproof as a typical molex connector.
Club Member
Joined: Feb 2008
Posts: 11,483
Likes: 39
From: Passaic County, NJ
Vic, I am not saying don't use it, just saying far too many on here present it as a cure all, it has some disadvantageous that need to be considered.
Just having the connector under the seat may not be enough, I had mine under the ECM itself. It is a shame that connector is not as waterproof as a typical molex connector.
Just having the connector under the seat may not be enough, I had mine under the ECM itself. It is a shame that connector is not as waterproof as a typical molex connector.
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
Exactly right, because it is non-conductive, it should not be used on metal contacts.
Tourer
Joined: Feb 2011
Posts: 351
Likes: 2
I sure wish you guys would stop promoting the use of dielectric grease without explaining the downfalls of using it.
Dielectric grease is a non-conductive, silicone grease used to seal out moisture and, prevent corrosion on electrical connectors. Since it is non-conductive, it does not enhance the flow of electrical current. This makes it an ideal lubricant and sealant for the rubber portions of electrical connectors.
Dielectric grease will melt silicone rubber over time, and should not be used on connectors, such as o-rings, that are made of this rubber.
While the indicated use of dielectric grease calls for it to be used only on the non-metal parts of a connection, it has been shown to be effective at preventing corrosion when applied directly to the metal connectors as well. Care should be taken when using it in this way, because this application can cause the connection to stop working. A common reason for such a failure is that the grease creates a barrier between the two points of contact.
In other words, it should not be used between metal to metal connections. Nothing beats a solid, tight, metal to metal connection.
You really should not need this stuff if you have installed the unit properly, I ran a PC III for about 3 years and never had any issues with water, there are exceptions to everything, but dielectric grease is not a magic potion to be used to cover an improper installation. If you get the connector under the ECM as it states in the manufacturers instructions, I seriously doubt you will have moisture problems.
Dielectric grease is a non-conductive, silicone grease used to seal out moisture and, prevent corrosion on electrical connectors. Since it is non-conductive, it does not enhance the flow of electrical current. This makes it an ideal lubricant and sealant for the rubber portions of electrical connectors.
Dielectric grease will melt silicone rubber over time, and should not be used on connectors, such as o-rings, that are made of this rubber.
While the indicated use of dielectric grease calls for it to be used only on the non-metal parts of a connection, it has been shown to be effective at preventing corrosion when applied directly to the metal connectors as well. Care should be taken when using it in this way, because this application can cause the connection to stop working. A common reason for such a failure is that the grease creates a barrier between the two points of contact.
In other words, it should not be used between metal to metal connections. Nothing beats a solid, tight, metal to metal connection.
You really should not need this stuff if you have installed the unit properly, I ran a PC III for about 3 years and never had any issues with water, there are exceptions to everything, but dielectric grease is not a magic potion to be used to cover an improper installation. If you get the connector under the ECM as it states in the manufacturers instructions, I seriously doubt you will have moisture problems.
If the terminals are in proper condition and tight when assembled they will make proper contact and the grease will seal the terminals from corrosion and moisture, if they are not tight that unto itself will create its own problems. It also can prevent a short between connectors in a multiple pin connector. A perfect example of its use is the tail lamp connectors and bulbs on your dyna, each coated with dielectric grease and then shoved into their respective sockets.
The only reason I recommended liberal application to the PC connectors is that the PC side of the connector, at least it is on my PCIII, is open to the elements from the back side compared to the OE connector, simply cost savings on Dynojet's part. Apply liberally, assemble and wipe off excess.
The OP should also inspect all other exposed connectors for moisture and corrosion. Many times the O2 , CKP, TPS, etc will get moisture in them as well and should be coated, as well as the fuses and relays in the fuse block.
Also, it is silicone based so how exactly does it attack silicone over time? Even CRC and Permatex recommend it for use on rubber and o-rings applications.
Last edited by dynabobster; Jun 24, 2011 at 12:42 PM.
Cruiser
Joined: Aug 2010
Posts: 116
Likes: 1
From: South, MS
One other area that I had never thought about will let water in as well...the usb port..I have my pcIII under my seat and did use dielectric grease on all my connetions but I was loading a new fuel map yesterday when it hit me..day-um..there is a water hole right there...I am going to plug it with something shortly.
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
Strongly disagree,
If the terminals are in proper condition and tight when assembled they will make proper contact and the grease will seal the terminals from corrosion and moisture, if they are not tight that unto itself will create its own problems. It also can prevent a short between connectors in a multiple pin connector. A perfect example of its use is the tail lamp connectors and bulbs on your dyna, each coated with dielectric grease and then shoved into their respective sockets.
The only reason I recommended liberal application to the PC connectors is that the PC side of the connector, at least it is on my PCIII, is open to the elements from the back side compared to the OE connector, simply cost savings on Dynojet's part. Apply liberally, assemble and wipe off excess.
The OP should also inspect all other exposed connectors for moisture and corrosion. Many times the O2 , CKP, TPS, etc will get moisture in them as well and should be coated, as well as the fuses and relays in the fuse block.
Also, it is silicone based so how exactly does it attack silicone over time? Even CRC and Permatex recommend it for use on rubber and o-rings applications.
If the terminals are in proper condition and tight when assembled they will make proper contact and the grease will seal the terminals from corrosion and moisture, if they are not tight that unto itself will create its own problems. It also can prevent a short between connectors in a multiple pin connector. A perfect example of its use is the tail lamp connectors and bulbs on your dyna, each coated with dielectric grease and then shoved into their respective sockets.
The only reason I recommended liberal application to the PC connectors is that the PC side of the connector, at least it is on my PCIII, is open to the elements from the back side compared to the OE connector, simply cost savings on Dynojet's part. Apply liberally, assemble and wipe off excess.
The OP should also inspect all other exposed connectors for moisture and corrosion. Many times the O2 , CKP, TPS, etc will get moisture in them as well and should be coated, as well as the fuses and relays in the fuse block.
Also, it is silicone based so how exactly does it attack silicone over time? Even CRC and Permatex recommend it for use on rubber and o-rings applications.
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