2HtoHe Posted February 18, 2020 Share Posted February 18, 2020 I have had this issue with my 2010 Fusion Hybrid for around a year. What happens is basically, when I am either coming from a stopped position or moving at a very low speed, and hit the accelerator, I get basically no power at all for around a second before it finally "catches" and then it accelerates normally. I have taken this both to a local repair shop and the dealer, who both basically said the same thing: you have a car that is not built for acceleration, what do you expect. Also they said I had (starter) battery problems - which was true - and they replaced it. However, it used to have quite good acceleration, and anyway it seems obvious that almost no acceleration at all for a full second is not normal operation. Changing the battery had no effect on the problem, by the way. It almost feels like the car is asking the electric motor to handle the power train but it is not responding, and eventually it turns it over to the gas motor which actually does it. Any ideas what I need to direct the shop to look at? 0 Quote Link to comment Share on other sites More sharing options...
Milan_OH Posted February 18, 2020 Share Posted February 18, 2020 Try this 1 Quote Link to comment Share on other sites More sharing options...
VonoreTn Posted February 18, 2020 Share Posted February 18, 2020 (edited) Yeah! What Milan said above! He fixed my 2010 FFH in 20 minutes with his lap top computer! It has significantly improved the performance and mpg! And he got his instruction from Allen84, also above. The only change that was made was to refresh to the previous code, so it would continue in the same driving commands that it had been using for the previous 10 years. Footnote, that 12 volt battery they replaced is not the starter battery. It is just a 12 volt battery to accommodate all the 12 volt stuff that is on any non-hybrid Fusion. The engine is started by the built into the engine high voltage electric motor, which is why it is so quiet and seamless, as it turns on and off the engine while driving. Other posters here know a lot more than I do about this high tech hybrid system. The dealer replaced my 12 Volt battery at 112K miles, $146, including an oil change. I had to add distilled water to it a couple of times to get that much life out of it. My high voltage nickel metal hydride battery is still performing like new at 147K miles. I still love this car. It has saved me $10,540 in fuel cost versus the 2000 Ford Explorer I had before for 10 years that I loved, based on a full record and comparable miles. Edited February 18, 2020 by VonoreTn typo 0 Quote Link to comment Share on other sites More sharing options...
Ashley89 Posted December 12, 2023 Share Posted December 12, 2023 On 2/18/2020 at 8:36 AM, Milan_OH said: Try this Can you please repost whatever this is? 0 Quote Link to comment Share on other sites More sharing options...
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