Question:
Another dealer FOUND IT AND FIXED IT! Due to some sort of defect, water got into the horn. Fixed…end problem!
– Hide quoted text — Show quoted text -> My brother has a 2000 Explorer Limited with 30,000 miles on it at 2 years of > age. He reports that for the past year, he has been blowing the fuse that > controls the horn and cruise control. He says he can’t find any other > electrical "outage" although I would suspect that more than the horn and > cruise would be on one circuit. > He has had it to one dealer three times for this but, so far, no luck. It > still happens. Tomorrow I have an appointment to take it to MY dealer. I > just thought I’d post this and perhaps someone else is familiar with this > problem.
Response:
Actually, Bill, I try to be upfront about this kind of stuff – now with the proliferation of electronics on modern vehicles, the cost of diagnosis often outstrips the cost of the repair many times over. Probably the biggest single asset in isolating electrical faults is the ability to perform and understand voltage drop tests – but it can still be frustrating – especially when the customer has a budget of $XX and you’re flirting with the end of it with only a "couple" more things to check. Your right about the majority of techs coming up a little short on the electrical abilities – it’s a tough subject to get a handle on when you get into the realm of intermittents, bad grounds and feedback in circuits – at the same time as your dealing with what the stereo/remote starter bozo left behind…. Just another fact of life we all have to deal with. — Jim Warman Slave Lake, Alberta, Canada
– Hide quoted text — Show quoted text -> Electrics can be a real headache for the tech to fix. > First, not many have any electrical experience beyond setting up a > stereo (sounds harsh, but it’s true). > Second, even *with* such experience, a knowledge and ‘feel’ for > troubleshooting is essential. > Third, the electrics can be one of the most time-consuming (and > expensive) things to fix on a car. At over $70/hr for many shops (and > probably higher in dealers), troubleshooting adds up in a hurry. And > the frustation level gets really high when the problem turns out to be > a piddling small problem like a chafed wire that took 3 hours to find: > $10 to fix, with over $200 in just finding the problem added onto the > bill. > And, of course, the techs just *love* hearing about this, as well. > — > Bill Funk > http://www.users.qwest.net/~bfunk33/
Response:
>A quick peak in the owners manual would list out everything on that circuit >and at least give you a place to start. There has been the rare occasion >where a tech has had to break out each individual branch of a circuit and >fuse them independently to narrow down a problem – a spendy diagnostic, but >sometimes necessary. >Good luck….
Electrics can be a real headache for the tech to fix. First, not many have any electrical experience beyond setting up a stereo (sounds harsh, but it’s true). Second, even *with* such experience, a knowledge and ‘feel’ for troubleshooting is essential. Third, the electrics can be one of the most time-consuming (and expensive) things to fix on a car. At over $70/hr for many shops (and probably higher in dealers), troubleshooting adds up in a hurry. And the frustation level gets really high when the problem turns out to be a piddling small problem like a chafed wire that took 3 hours to find: $10 to fix, with over $200 in just finding the problem added onto the bill. And, of course, the techs just *love* hearing about this, as well. — Bill Funk http://www.users.qwest.net/~bfunk33/
Response:
A quick peak in the owners manual would list out everything on that circuit and at least give you a place to start. There has been the rare occasion where a tech has had to break out each individual branch of a circuit and fuse them independently to narrow down a problem – a spendy diagnostic, but sometimes necessary. Good luck…. — Jim Warman Slave Lake, Alberta, Canada
– Hide quoted text — Show quoted text -> My brother has a 2000 Explorer Limited with 30,000 miles on it at 2 years of > age. He reports that for the past year, he has been blowing the fuse that > controls the horn and cruise control. He says he can’t find any other > electrical "outage" although I would suspect that more than the horn and > cruise would be on one circuit. > He has had it to one dealer three times for this but, so far, no luck. It > still happens. Tomorrow I have an appointment to take it to MY dealer. I > just thought I’d post this and perhaps someone else is familiar with this > problem.
Response:
> A quick peak in the owners manual would list out everything on that circuit > and at least give you a place to start. There has been the rare occasion > where a tech has had to break out each individual branch of a circuit and > fuse them independently to narrow down a problem – a spendy diagnostic, but > sometimes necessary.
Just a story so you know what kind of detective work you’re in for. This was in a Chrysler Mini Van. Late in summer the fuse for the various signal and brake lights started blowing a LOT. Couldn’t trace it down. Then it seemed to go away. I figured water somewhere that had evaporated. Suddenly in the late spring it started again. Then I noticed it happened each time shortly after turning on the AC. Turned out that a short in the AC controls was doing it via some sort of ground feed back. When I fixed the AC switch the lights stayed on. The moral. Don’t buy an old Chrysler (84) mini van and pay attention as to what has just happened when it goes out.
Response:
If the second dealer is at a loss, try this little trick. Replace the subject fuse with a 12 volt lamp. Use a test light or rig up your own with a brake light lamp or something similar. Now with the key on, wiggle, jiggle, poke, twist and turn anything remotely connected with that circuit. Turn the steering wheel, adjust the steering wheel, etc.etc. Do NOT blow the horn. If you get that bulb to come on or blink, you will be on the track of the short. You cannot create an electrical problem doing this as the bulb will always be a satisfactory load on the system. Charlie
– Hide quoted text — Show quoted text -> My brother has a 2000 Explorer Limited with 30,000 miles on it at 2 years of > age. He reports that for the past year, he has been blowing the fuse that > controls the horn and cruise control. He says he can’t find any other > electrical "outage" although I would suspect that more than the horn and > cruise would be on one circuit. > He has had it to one dealer three times for this but, so far, no luck. It > still happens. Tomorrow I have an appointment to take it to MY dealer. I > just thought I’d post this and perhaps someone else is familiar with this > problem.
Response:
Try disconnecting the horn under the hood and see if the fuse still blows. If it does not, you have a defective horn. If the fuse still blows, it is someplace else.
Response:
My brother has a 2000 Explorer Limited with 30,000 miles on it at 2 years of age. He reports that for the past year, he has been blowing the fuse that controls the horn and cruise control. He says he can’t find any other electrical "outage" although I would suspect that more than the horn and cruise would be on one circuit. He has had it to one dealer three times for this but, so far, no luck. It still happens. Tomorrow I have an appointment to take it to MY dealer. I just thought I’d post this and perhaps someone else is familiar with this problem.
Response: