code p0540 intake heater relay grease

[dbasmb]

This is the second time I've had this code. The first time I used the info from this website to replace the relays (including the glow plug relay also when it went). Rather than pay the $168 for the entire controller, I put in 70 Amp relays as suggested. Nearly 2 years later, it has happened again. For $13 a relay, I can keep replacing them for many years before I've spent the $168 so all is well. However, when I replaced them before, I saw they were packed with some sort of grease. Can anyone tell me what type of grease that is so that I can add it? Since the relays are in a very hot spot, I would think the grease mitigates the heat. I don't think it's a dielectric since it is in contact with the terminals. Anybody know??

Thanks

Doug

 

[THEFERMANATOR]

It's just a dielectric grease to prevent oxidizing of the terminals. from the heat exposure. Haven't heard of many P0540 codes, normally it's the P0380 for the glow plug that comes up.

 

[hondarider552]

Turn that crap off via EFI.

 

[dbasmb]

Haven't heard of many P0540 codes, normally it's the P0380 for the glow plug that comes up.

Yeah, that's the second one of the 2 relays, the 540 is for the intake manifold heater which is the other relay.

By the way, I measured the current going to the glow plug at about 80 amps. My 70 amp relays aren't quite good enough but I can't find any better (other than the OEM). That is probably why I have to replace them often.

 

[THEFERMANATOR]

80 amps is low, you have a plug or 2 out. I measured mine at 105-115 amps depending on battery voltage. The factory relays are 100 amp units, but utilize a 70 amp socket. I've had the 70 amp FORD relay in mine for almost 6 years now, and it still works just fine. For the difference in cost, I figured I could swap them out every 5 years if needed, but the 70 amp relay is still going. I removed my IAH, so I plan on using both relays for my glow plugs if I ever have any problems, but I haven't had a reason to mess with it.