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I drove the truck with a 10 amp fuse, went over the same railroad tracks the fuse did not blow. If I take the truck to someone they will say they can't find the problem. Would a professional scanner find the problem? Is this a sign maybe the WCM is going bad? There are no codes showing I have a basic code reader with ABS. I will get a Haynes manual. I did what I had to do to get home and would do it again. If the pos caught on fire I might be better off.I bought this truck used to replace a Chevy that was totaled (not my fault). I am starting to think I should have bought something else instead of Dodge! Having differant circuits on the same fuse is stupid! Having a securaty system that shuts the truck down if a fuse blows is dangerous!As mentioned by HarryS, installing a fuse with a large value is a very bad idea. In a pinch, trying a close smaller value is OK.
The wiring, components, and/or connectors were designed with a specific current in mind. Exceeding that current value would likely cause damages that will be painfully difficult to find or repair.
Larger gauge wire costs more money, so the design will accommodate the least amount of current necessary for the specific functions.
And, just because you may have miraculously gotten away successfully this time, don't ever think this is a potential solution for future consideration.
I would tow my truck in a heartbeat before taking this action.
If what I have written is not clear in your mind, please ask questions.
As for a service manual, the closest date I can find is 2008. Download the PDF to a PC and word search using 'Control F'.
Pdf service manual
Has anyone found a 4th generation service manual in a PDF format? If so can you please share the link? I can't get the McFall one to work on my phone. Thanks!
Another option is using a local library for a Haynes or Chilton manual. If you're able to find one you like, they're not expensive to buy. I've owned many over the years.
This truck obviously has something that is shorting out when you hit a bump. It will be necessary to trace every inch of wiring on this circuit to locate and repair the damaged insulation or other anomaly.
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Did you find the 2007 DR factory service manual in the posted link from @RamDiver?
If you have the 2007 DR factory service manual with wiring diagram that would help. On further investigation with the truck running, I raised the fuse box wiggled the wires. I took the steering column covers off wiggled those wires and the fuse did not blow. I have had the truck for 4 months. It does have a Dorman aftermarket fuse box. My best guess is the WCM or SKREEM is intermittently causing the fuse to blow.
If the WCM or SKREEM is at fault I found a service that can reflash the PCM and then remove the WCM.This truck being a 2007 may not find a new WCM. I have 2006 f150 2wd and a 2019 Ranger Lariat .I miss the simpler days. I bought this truck for hunting, towing my tractor hauling firewood. I don't know of another make where the truck will shut down when driving becuase of the security system. I bought a Haynes manual but did not cover the WCM. What I need is a wiring diagram or a way to make sure the WCM is at fault.I have the correct 10 amp fuse in now. There would not be a business to do this if people did not hate the WCM SKEEM and the problems it gives!This is the challenge with intermittent electrical faults: they can be sporadic and only appear when it's less than convenient.
You had best do your homework to find an honest and skilled professional before asking them to find an intermittent electrical fault, or get ready to sell body parts to pay the bill.
A better quality scanner will often catch DTCs that a basic unit might miss.
Most parts stores have better than basic scanners, AFAIK.
You obviously did't comprehend my previous explanation, no disrespect intended.
This isn't about being brave or bold: it's about expecting a circuit to perform beyond its capability.
The circuits are designed for a specific current flow (Amperage).
If you knowingly exceed this design specification, eventually you will pay the price.
You were lucky that the intermittent short didn't happen again, because the risk of significant damage would be a concern to most owners.
If you value your truck that little, list it on fleabay and stop wasting time on here.
Otherwise, let's press on to see if we can find your intermittent fault.
Have you ever tried working on the electrical circuits in a house built in the '50s to '70s?
This is where you will find 1 single 15A circuit covering 3 or 4 rooms, and sometimes with a kitchen baseboard outlet.
I suspect Dodge/Ram trucks aren't too different than most vehicles.
Design engineers are directed by their superiors to limit production costs and not necessarily build things in an ideal fashion.
I also suspect the main reason that any truck would become disabled because of DTCs or failing components is more about protecting against warranty claims and costs to the manufacturer.
Trucks are no different than any other industry. They're a business trying to make money.
People often make bad decisions about when to park, shut down, and call a tow truck.
Why should the manufacturer pay the price for these bad decisions?
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