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Tomster
Beware of idiots
That's not happening. The car has been tuned.
sublime1996525
Well-Known Member
I’m not thinking warranty work but to hold the dealer to a higher standard. Probably won’t happen but would be nice.
Tomster
Beware of idiots
I am sympathetic, but the car was tuned, brought in for diagnostics and troubleshooting, a repair attempted, and didn't fix the problem.
What are the terms and conditions when you bring a car to a dealership? I image there is a diagnostic fee applied, but absorbed by the repair. What happens if the car isn't repaired by the repair?
I'll throw out the obvious that has probably been addressed. I would have started with a new battery along with an immediate BMS reset via forscan. I've seen these same symptoms, but the battery has to be topped off with a fresh charge along with an immediate BMS reset.
What's left? New battery, New alternator.... done.
Beyond that, you are looking at a PCM or a wiring issue.
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RobeRob
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- #21
The car has a new battery and a new alternator and a new PCM. According to the service advisor the technician did not find any broken wires. However Ive been researching this issue via internet and found a write up from ford itself that says if the Gencomm wire has an open the PCM will not be able to regulate the voltage. This is exactly what Ive been noticing because Ive watched the voltage meter while driving. I have asked several times for the technicians to change the connector at the alternator and run two new wires from the PCM connector. According to the wiring diagram on alldata the GenlI and genRC come from pin 26 and 13 PCM connector 175B then go to Connector 1046 pin 2 and 3 then to pin 1 and 2 at the alternator. I believe if they overlay two new wires from the PCM connector directly to the alternator and also change the connector at the alternator it will fix the problem. Getting these "F"ing boneheads to listen is another thing. I'm starting to believe I'm going to have to fix it myself or take it to an electrical shop and tell them what I want them to do.
Cobra Jet
Well-Known Member
While I understand the frustrations, many Ford Service Centers can’t deal with vehicle where the “As Built” has been modified or the PCM is running XYZ’s “tune”. Essentially (to Ford) the PCM has been “tampered with”.
Granted they should be able to fix your car, but they cannot be held accountable for loading/reloading an aftermarket tune back to the PCM…. To them, it’s a liability because if they go to flash the existing OR a new PCM with XYZ’s tune and/or tuning device and the Tech doesn’t fully know how to do it, the PCM can be bricked…
I don’t think filing a claim will be of any benefit at all. Not with the car being modified and having a Lund Tune.
If you think you have found the fix - take the car back and save the $$$ by doing the repair yourself. The Service Center may not want to fully invest in more time with the vehicle since it has been modified and it has an aftermarket tune - because now who knows what else has been done to the car, it’s modules or its wiring harnesses.
Not trying to offend - but you have to see the side of the Service Center’s concerns as well.
Most Service Centers and Techs at any XYZ Dealer Brand go by a script - many don’t go outside of it if there is a risk that could cause additional damages or more issues needing extensive diagnostic time. The longer a vehicle is in their bay, the more time they are losing servicing others.
Granted they should be able to fix your car, but they cannot be held accountable for loading/reloading an aftermarket tune back to the PCM…. To them, it’s a liability because if they go to flash the existing OR a new PCM with XYZ’s tune and/or tuning device and the Tech doesn’t fully know how to do it, the PCM can be bricked…
I don’t think filing a claim will be of any benefit at all. Not with the car being modified and having a Lund Tune.
If you think you have found the fix - take the car back and save the $$$ by doing the repair yourself. The Service Center may not want to fully invest in more time with the vehicle since it has been modified and it has an aftermarket tune - because now who knows what else has been done to the car, it’s modules or its wiring harnesses.
Not trying to offend - but you have to see the side of the Service Center’s concerns as well.
Most Service Centers and Techs at any XYZ Dealer Brand go by a script - many don’t go outside of it if there is a risk that could cause additional damages or more issues needing extensive diagnostic time. The longer a vehicle is in their bay, the more time they are losing servicing others.
RobeRob
Member
- Thread starter
- #24
Got ya. And I understand. I really don't want to take the car back to them. Honestly I also think that in this area there are not alot of these cars so finding technicians with advance car knowledge is hard to find. My wife is a manager at a mercedes dealership and she has told me many times they cant keep good technicians because the dealerships don't want to pay. So now post covid its just about keep bodies in the shop and maybe one master technician who takes the job that make the most money. Thanks for the advice Cobra Jet.
Tonymustang302
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yea my dealer wont touch my race cars, or when i had my gt500 modified (And my company brings them a lot of money in fleet work) thats completely fine. You cant blame a dealer for a modified vehicle if they are trying to help. Welcome to the world of eff around and find out. Find a good speed shop, dont make this Fords problem Or fault.
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Tonymustang302
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speed shops usually have way better techs than dealers but its hard to find. Im lucky because i have a shelby tech at a dealer that also drag races so he knows how to work on modified vehicles.
Tonymustang302
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I know a good shop in maryland if that helps. Standout guy from my talks with them
RobeRob
Member
- Thread starter
- #29
Yeah Thanks Tonymustang302, but Im in New Jersey. I about to go to and auto electrical shop today and talk to them and see if they can do exactly what I want. Keep you guys posted. Sorry for flippin out about this I just want to drive the car. Its been two years and its still in the garage.
Cobra Jet
Well-Known Member
@RobeRob
check this thread out on the Factory Five forum, where these guys do use the Coyote platform and harnesses for their drivetrains.
The one guy was having a similar problem as yours. He called Ford Performance and their reply to him (Post # 15 in linked thread) was to disconnect a 3-wire harness that comes off the alternator.
https://www.ffcars.com/threads/having-high-voltage-problem.640870/
Now I do not know if that is the same as you were discussing in your findings in your Post # 21 above. I also don’t know if your alt has that same 3-wire connector/harness - but if it does - do what he did and see what results you get. There was another individual in that same FF thread that had the same issue and also did the same by cutting power to that harness and he reported that his readings also went back to spec.
IF you or your shop tried it and it works, it may help to narrow the issue down further or pinpoint the “what” for the cause.
Post us an update too.
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