#30 fuse keeps blowing!!
#31
04-15-2010, 07:55 AM
Fleet Owner
Hi there!
Thanks everyone for the inputs!! Since I have (or maybe should I say had) the same problem, I found the connector on the back side of the diesel filter cup and unplugged it. After that it seems as if the problem with fuse 30 blowing disappeared. The question I have is that there are two cables going to the same harness: The red/lt green one for the heater and then a wht/red one. Question is what is that one for? Can I just leave the connector unplugged or do I actually need to cut the red/light green cable and put the connector back?
Regards from Sweden.
Thanks everyone for the inputs!! Since I have (or maybe should I say had) the same problem, I found the connector on the back side of the diesel filter cup and unplugged it. After that it seems as if the problem with fuse 30 blowing disappeared. The question I have is that there are two cables going to the same harness: The red/lt green one for the heater and then a wht/red one. Question is what is that one for? Can I just leave the connector unplugged or do I actually need to cut the red/light green cable and put the connector back?
Regards from Sweden.
That other wire is for the water in fuel light.
#32
04-15-2010, 08:42 AM
Thanks so much! So maybe the optimal thing here is to put the connector back, take out the diesel filter and remove the actual heater device in the bottom of the bowl? In that way I save my #30 fuse, while at the same time keep my "water in fuel" functionality? Right?
Best regards,
Lennart
Best regards,
Lennart
#33
04-15-2010, 08:55 AM
Thanks so much! So maybe the optimal thing here is to put the connector back, take out the diesel filter and remove the actual heater device in the bottom of the bowl? In that way I save my #30 fuse, while at the same time keep my "water in fuel" functionality? Right?
Best regards,
Lennart
Best regards,
Lennart
#35
04-15-2010, 09:24 AM
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Thanks so much! So maybe the optimal thing here is to put the connector back, take out the diesel filter and remove the actual heater device in the bottom of the bowl? In that way I save my #30 fuse, while at the same time keep my "water in fuel" functionality? Right?
Best regards,
Lennart
Best regards,
Lennart
I have some pics of the heater and electrical connectors in my fuel bowl rebuild how-to in my mods & maintenance site that may make it a little clearer.
#36
04-15-2010, 10:50 AM
#37
04-15-2010, 10:59 AM
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Yea, sorry about that but most of the European IP's are blocked simply because of all the hacking attempts that I get from there, Asia and especially China.
#38
04-16-2010, 12:08 AM
Hi again! Starting to get a bit worried that the heater is not the cause of the fuse blowing in my case: Reason for my worries is that my truck stopped (and fuse 30 died) while I was driving, while for all the other guys I read about it seems to have happened during starting. So the question is if anybody knows when that heater is supposed to be on? Always? When it is cold? Only when you start? If I look at a wiring diagram it seems to be always on. Also when I Ohm it it there seems to be a direct connection between the heater and the fuse?
#40
04-16-2010, 12:59 AM
PREMIUM SPONSOR
IIRC the fuel bowl heater is always on. Disconnect like Dan suggests and see if that fixes it for you, as I think it will. Here is a link for a new heater.
DieselOrings.com : Fuel Bowel Heater - Aftermarket
DieselOrings.com : Fuel Bowel Heater - OEM
DieselOrings.com : Fuel Bowel Heater - Aftermarket
DieselOrings.com : Fuel Bowel Heater - OEM
#41
04-16-2010, 01:41 AM
Hi and thanks! Yes, I have unplugged and no, it hasn't happened again since then. Reason for asking is that I wanted to be confident that this is the fix, because the feeling of the truck "dying" in 60 mph with two horses in the trailer is not something I would like to experience again... Anyway, after the very supportive answers I got I now am confident that this is the fix.
#43
04-16-2010, 10:11 AM
PREMIUM SPONSOR
Riffraff Diesel: Fuel Bowl Heater Element
#44
04-16-2010, 10:28 AM
Fuse #30 heater fuse blows!
We seem to have an inherent design problem in the Fuel heater design. The fuel heater is fed from the same power source that also feeds vital engine devices. It seems to me that if we were to resource the the power to the fuel heater relay, and use a separate relay to control the heater curcuit. That way if and when the heater fails, it would only blow the fuse that powers the heater and nothing else.
Comments?
Comments?
#45
04-16-2010, 10:40 AM
Since the heater is constant on with the ignition on, shouldn't be too hard to put in a seperate relay and fuse. If it becomes an issue then it can be disabled without shutting down anything else. Or even a switch if someone wants to run it manually. Just have to be sure it is on a switched power source so it wouldn't be left ON when the truck is parked and drain the batteries.