L2 charging speed recently dropped 33%

[thenew3]

I've been seeing this behavior since early August and have been doing some testing. If I set my Emporia EVSE to 48 amps, the charge rate will bounce between 11.3kwh and 8.3kwh every 3-5 minutes. If I set it at 40 amps, it will bounce between 9.3kwh and 7.7kwh every 10-15 minutes. If I set it to 32 amps it will bounce between 7.5kwh and 5.5kwh every 20-25 minutes. This is with ambient temps in the 60-65 degree range.
I don't hear any kind of noise coming from the car, indicating any kind of cooling pump going.

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[kennethjk]

I've been seeing this behavior since early August and have been doing some testing. If I set my Emporia EVSE to 48 amps, the charge rate will bounce between 11.3kwh and 8.3kwh every 3-5 minutes. If I set it at 40 amps, it will bounce between 9.3kwh and 7.7kwh every 10-15 minutes. If I set it to 32 amps it will bounce between 7.5kwh and 5.5kwh every 20-25 minutes. This is with ambient temps in the 60-65 degree range.
I don't hear any kind of noise coming from the car, indicating any kind of cooling pump going.

Mine is steady at 32 amp 7.5 kw but it bounces around if higher.

nice to know Fords throttling of level 2 charging is inconsistent but not unexpected

 

[Peugfan]

I've been seeing this behavior since early August and have been doing some testing. If I set my Emporia EVSE to 48 amps, the charge rate will bounce between 11.3kwh and 8.3kwh every 3-5 minutes. If I set it at 40 amps, it will bounce between 9.3kwh and 7.7kwh every 10-15 minutes. If I set it to 32 amps it will bounce between 7.5kwh and 5.5kwh every 20-25 minutes. This is with ambient temps in the 60-65 degree range.
I don't hear any kind of noise coming from the car, indicating any kind of cooling pump going.

That can't be right….car throttling kw rate but not turning on the cooling pump. My car throttles my amps(kw) rate at anything above 32 amps JB40) I will have to check on cooling pump and fans running during my next charge.

 

[thenew3]

That can't be right….car throttling kw rate but not turning on the cooling pump. My car throttles my amps(kw) rate at anything above 32 amps JB40) I will have to check on cooling pump and fans running during my next charge.

That's my thought as well. I've tested it about 1/2 dozen times where I park it in the garage, close the doors so it's silent, then wait and see if there's any noise from the car when it's charging. It never makes any noise, and the vent flaps in the front remain closed.

 

[Shayne]

That's my thought as well. I've tested it about 1/2 dozen times where I park it in the garage, close the doors so it's silent, then wait and see if there's any noise from the car when it's charging. It never makes any noise, and the vent flaps in the front remain closed.

Mine does the same always cool, no pump, no fan just really slow charging. The guess here is it is a senor in the cable that runs from the port to the AC/DC converter that triggers the slow charging. This cable is not liquid cooled and therefore the car slows down the charging even when the rest of the system is fine. If it is a bad senor, bad software written for a different senor, the port/cable is actually overheating or something else nobody really knows. If it will be fixed or we will have to live with what we have seen for the last 4 months is also anyone's guess.

 

[Maquis]

That can't be right….car throttling kw rate but not turning on the cooling pump. My car throttles my amps(kw) rate at anything above 32 amps JB40) I will have to check on cooling pump and fans running during my next charge.

Yes, that’s what it does. The throttling is occurring due to the temperature sensed at the charge port. The cooling system doesn’t cool the charge port.

 

[Shayne]

Yes, that’s what it does. The throttling is occurring due to the temperature sensed at the charge port. The cooling system doesn’t cool the charge port.

The question is why is the port being sensed as too hot. Why was it allowed to work for 2.5 years just as hot and now not? Was it dangerous all the time we operated it before it was "fixed" with software? Would appreciate Ford explaining that and defend L2 charging speeds that are no longer anywhere near spec for me.

I have had the charger handle wrapped in a sock all winter to keep ice and snow off it and it warm but now people are wrapping ice packs around it to get it to charge acceptably. Think Ford may fix this or is this similar to the HVJB software fix? It will be interesting to see if it is still too hot when ambient temps fall below zero. Since it only happened early June I assume we will not be fixed by then so we should see.

 

[thenew3]

I spoke with the ford dealer and they blamed it on my Emporia EVSE. So I tested it yesterday on a Ford Pro 80amp EVSE (that came with a F150 Lightning). It does the exact same thing. 11kwh for 2 minutes, then 8kwh for 5-8 minutes then 11kwh again for 2 minutes. So it's not the Emporia.
Ford shouldn't be allowed to advertise the Mach E as having a 11kwh L2 charging if it can't sustain 11kwh charging speeds for the entire charge cycle. (or at lease for more than a couple minutes at a time).
I had my neighbor bring his F150 lightning to my house to test my emporia, and it stayed at 11kwh for as long as we left it on the charger. So it's not my Emporia EVSE. It's something in The Mach E but the dealer won't do anything (especially since I'm out of factory warranty period and am on extended warranty now).

 

[kennethjk]

I spoke with the ford dealer and they blamed it on my Emporia EVSE. So I tested it yesterday on a Ford Pro 80amp EVSE (that came with a F150 Lightning). It does the exact same thing. 11kwh for 2 minutes, then 8kwh for 5-8 minutes then 11kwh again for 2 minutes. So it's not the Emporia.
Ford shouldn't be allowed to advertise the Mach E as having a 11kwh L2 charging if it can't sustain 11kwh charging speeds for the entire charge cycle. (or at lease for more than a couple minutes at a time).
I had my neighbor bring his F150 lightning to my house to test my emporia, and it stayed at 11kwh for as long as we left it on the charger. So it's not my Emporia EVSE. It's something in The Mach E but the dealer won't do anything (especially since I'm out of factory warranty period and am on extended warranty now).

I gave my dealer all the info, he said without any fault codes there was nothing he could do.

he forwarded to his team that was meeting with aford execs a week ago, I have heard nothing

I have an e mail from Ford to my service tech saying it’s normal. They won’t do anything and I am under warranty.

just dealing with a company that is over it’s head in the EV world so far.

 

[thenew3]

I gave my dealer all the info, he said without any fault codes there was nothing he could do.

he forwarded to his team that was meeting with aford execs a week ago, I have heard nothing

I have an e mail from Ford to my service tech saying it’s normal. They won’t do anything and I am under warranty.

just dealing with a company that is over it’s head in the EV world so far.

That's more than what my local dealer service dept said. My local dealer just said they are a small dealer and don't know much about EV's. They wouldn't know where to start troubleshooting even if I was under original factory warranty. They suggested I take it to a larger dealer 2 hours away.

 

[kennethjk]

That's more than what my local dealer service dept said. My local dealer just said they are a small dealer and don't know much about EV's. They wouldn't know where to start troubleshooting even if I was under original factory warranty. They suggested I take it to a larger dealer 2 hours away.

Some people have had success where the dealer changed the charging port and sometimes that works and sometimes it doesn’t.

just caught in Ford hell.

charging version of HVBJB, derate something since hardware underperforms , in other words another shitty part.

 

[Maquis]

just dealing with a company that is over it’s head in the EV world so far.

I don’t think theyre in over their head. They know exactly what they did when they throttled the charge rate to avoid the warranty cost of replacing tens of thousands of charge ports. It’s probably only a matter of time when this starts happening on Lightnings that are supposed to charge at 19 KW! That’s when the sh!t will really hit the fan!

 

[Shayne]

I spoke with the ford dealer and they blamed it on my Emporia EVSE. So I tested it yesterday on a Ford Pro 80amp EVSE (that came with a F150 Lightning). It does the exact same thing. 11kwh for 2 minutes, then 8kwh for 5-8 minutes then 11kwh again for 2 minutes. So it's not the Emporia.
Ford shouldn't be allowed to advertise the Mach E as having a 11kwh L2 charging if it can't sustain 11kwh charging speeds for the entire charge cycle. (or at lease for more than a couple minutes at a time).
I had my neighbor bring his F150 lightning to my house to test my emporia, and it stayed at 11kwh for as long as we left it on the charger. So it's not my Emporia EVSE. It's something in The Mach E but the dealer won't do anything (especially since I'm out of factory warranty period and am on extended warranty now).

Wondered when they would start pointing fingers at our chargers. Based on past problems with this vehicle it was only a matter of time.

Guess my problem is one of the worse since mine averages in the low 6 KW range for the entire charge. Wish I was getting at least 8 kw but understand 8 when you are to be getting 11 is not great. No acknowledgement no statement of path forward from my dealer as per normal. Waiting on direction from Ford is all I have which based on past ethics of Ford and a HVJB I will start to hold my breath now.

I don’t think theyre in over their head. They know exactly what they did when they throttled the charge rate to avoid the warranty cost of replacing tens of thousands of charge ports. It’s probably only a matter of time when this starts happening on Lightnings that are supposed to charge at 19 KW! That’s when the sh!t will really hit the fan!

You may be right as Ford is a pickup truck company and we are collateral damage that are treated as second rate. Makes you feel like buying another SUV off them for sure.

 

[kennethjk]

Time for me to eat some crow. I brought my car down to Florida and charged up using my Autel, pictures of charging attached. The first time there were a few reverse Spikes to zero but basically all at 40 amps, 9.5 kw . Last night, it was steady 40 amps and 9.5 kw the entire time.

while using my Juicebox up north I had the yo-yo I’d charging at 40 amp and would fluctuate from 9.5-6.5 kw.

maybe it is related to certain EVSE’s

 

[Mach-Lee]

Time for me to eat some crow. I brought my car down to Florida and charged up using my Autel, pictures of charging attached. The first time there were a few reverse Spikes to zero but basically all at 40 amps, 9.5 kw . Last night, it was steady 40 amps and 9.5 kw the entire time.

while using my Juicebox up north I had the yo-yo I’d charging at 40 amp and would fluctuate from 9.5-6.5 kw.

maybe it is related to certain EVSE’s

Bad EVSE or bad J1772 handle on your Juicebox then. Guess you better buy a ChargePoint.

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