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Hybrid Vehicles Honda Civic Hybrid Honda Civic Hybrid IMA Problems
171 messages, Last post on Nov 21, 2009 at 7:27 AM
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Replying to: freddierap (Oct 18, 2008 8:13 am) 1) There is erratic behavior of the charge/assist system. Sometimes the system charges under acceleration when it should assist and it assists when coasting downhill and it should be charging. 2) Sometimes the charge/assist indicator will bounce between charging and assisting, and a noticeable “bump” or “surge” occurs. This happens when the car is accelerating, or sometimes decelerating down a hill when it should be charging. 3) Although a new IMA battery was installed and for a couple of weeks it seemed to hold a charge, the battery has become discharged on several occasions since the installation of the new battery. The car then exhibits very degraded performance and poor gas mileage. The battery has never charged the way it did before the first IMA problem. Prior to October 2007 it would often charge fully, sometimes each day. Since the first IMA work in October 2007 it rarely charges fully. 4) Sometimes when driving on level ground or a slight downhill grade, the gas mileage indicator drops all the way down. It stays there for several seconds and then goes back up to a normal level. 5) At times it seems that the engine will race or rev up when I start to accelerate from a stop. The car engine goes to AutoStop when the car stops, but it doesn't’ seem to move immediately when it restarts the engine after I take my foot off the brake. This does not happen really frequently, but occasionally. 6) The gas mileage of the vehicle has dropped almost 15% overall. But the gas mileage has also very frequently been inconsistent. At times the MPG is up to the 50 MPG range or more. At other times it is in the 38 – 44 MPG range on the same type of road conditions, same driving patterns, and no AC use on either occasion. I drive the vehicle 30,000 – 33,000 miles per year for work, so I am very familiar with the normal performance and mileage of the car, at least before the problems occurred after the IMA warning light came on in October 2007. I have told my dealer that I am considering some options, contacting local and/or national media about the unresolved problem and American Honda's denials, and getting a magnetic sign made for the side of my car that will warn others who may be considering buying a Civic Hybrid. I would name the local dealer and American Honda and state that they cannot fix my car. The dealer has made me a decent offer to trade my car for another, and I could get a pretty good deal on a 2009 non-hybrid. I told them that there are bigger issues than just my dissatisfaction. The weather is cooler here now, so the safety issue is not as big of a problem. I hope other owners file complaints and try to put pressure on Honda. There could be some strength in numbers.
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Replying to: lectricman52 (Oct 18, 2008 9:17 am)  Thanks for the reply. I know our problem seems to be worse with heat, however the weather is cooler here now and although not as frequent it's still happening with my car. Couple thoughts; as for the gas mileage loss I really believe this is due to reduced battery voltage from it being damaged during the rapid discharges. I have some knowledge with rechargeable batteries and rapid discharges are their death. I have seen them vent or explode when rapidly discharged. Once they have experienced this brutal discharge, and it only takes one time to damage them, their output voltage under load is reduced and for us this means less assist from the IMA therefore more gas engine required to do the same amount of work. The heat caused by the car sitting in a parking lot for example might reduce the the batteries output voltage if plotted on a graph, but is not enough to be felt to the driver and is not gong to be the cause of the batteries suddenly dumping their capacity. Which gives me my greatest concern, our IMA batteries contain a lot of stored energy, when they rapidly discharge.... where is the stored power going?? To see all your bars click off in under 10 seconds requires nothing less than some form of dead short... can anyone say dangerous. I seriously doubt any system in the car is capable of using that much power in that brief period, therefore a short circuit that could cause an explosion concerns me.
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Several of you have been very helpful and are therefore familiar with the IMA assist problem occurring in our vehicles. After almost 4 months of getting the run around from American Honda, they finally attempted to be rid of me by sending me a letter stating that there is nothing wrong with my car, and that (contrary to actions taken by my dealership) Duval Honda found no evidence to support my claims that the vehicle was malfunctioning. They have since stopped taking or returning my calls. Going so far as to hang up when I call the service manager direct. I have gone to a new dealership. The issue: As of yesterday my car threw a check engine light, while accelerating, the car will buck and jerk and is really quite terrifying to be driving. This behaviour is inconsistent and I had initially thought the problem to be the O2 sensor. It will turn off my cruise control when the irradict behaviour starts up as well. However, (as I am sitting in the dealership now) I have just recieved information that this dealership thought a rat had damaged a single 2" area of my wiring harness. I of course being moderately familiar with cars, and not at all stupid went to see for myself this "rat damage" And wouldn't you know, this must be the best rat ever, because the casing around the wires was rather neatly "chewed" and almost no plastic was missing at all. Only a single black wire from within that casing was damaged, and it was almost perfectly cut. I of course took my stance that there was no way a rat came into my car decided to cut my wire casing and neatly cut a single wire. There is no evidence of any damage anywhere else in the car. FORTUNATELY, my service advisor understood my concerns, and my conspiracy theory against my last dealership and took it up with the manager. So now I am getting the wire fixed and new diagnostics done on the car, with the oil changes etc. for $90. They said they did not want to be associated with being at all like Duval Honda and did not want to behave like Duval Honda. While still not perfect, it is much better than the original cost, but I don't feel like they did the damage, and I am not taking it back to Duval Honda to try and argue that they did it, so I will be moderately content to part with the $90. I had never thought to check and see if my old dealership had "accidently" damaged any part of my car. But this is where I am now on the IMA issue, I hope that this fixes it. |
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I have recently had some work done to my 05 HCH and ever since then the mpg have dropped by 5-10. My day started out with a flat tire. It was time to get new tires so that's what I did. I took it to a tire store and while they were under there they noticed the front brakes were 90% worn so I had those replaced and the 50,000 mile check-up. Starting that day after I left the tire store I'm averaging 34-36 mpg instead of 42-46 mpg. Does anyone have any insight on why this could be? It is really bothering me. Any advise would be greatly appreciated. |
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Replying to: highmpg (Aug 27, 2008 8:35 am)
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Replying to: sholmes717 (Jan 01, 2009 5:54 pm) |
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Replying to: 46jimbo (Jul 18, 2007 10:19 am) |
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Thanks to everyone for sharing their issues about their HCH. I joined this forum to find out about my recent problem with my 2003 HCH IMA. The IMA light came on during a recent trip over Christmas (250+ miles). It came on while I was running low on gas and the "gas pump" indicator light was showing for about 15-20 miles (I have run with the gas indicator light on before with no issue and my IMA is probably not related to the low gas but I thought I would provide the information). After checking in the owners manual I made an appointment with our local Honda dealer a few days after the IMA light came on (and never went off by the way). I have just returned from the dealer and I was told their tests indicate "the IMA battery system is bad and it needs to replaced at the cost of $3785". Not pleased I asked if driving the car in "this condition" was a problem, and they said no but you may have decreased performance issues, I walked out without ordering a new IMA battery system. My gas mileage has been regularly around 45+ mpg, but in the last couple of weeks it has dropped to 41-42 mpgs. I am unsure if the IMA issue is to blame. Concerned about not knowing enough, I googled the problem and I found this forum and here I am. After reading many issues with HCH IMA, particularly for 2006 HCH, I sense that my need to replace the battery any time soon is not a priority (perhaps I am wrong). I also see I may need to take it to my local corner gas station mechanic who is damn good, and have it put it on his computer so I can get a "second opinion". I should have taken it to him for the first opinion but I guess I was worried about the IMA system problem being too complicated for him. My plans. I am not going to replace the entire IMA battery system unless there is overwhelming need to do so since I do not want to spend almost $3800. 1. Any thoughts from the forum members about the need (safety is my obvious concern) of having to replace the IMA battery system soon? 2. Can I drive this car, even if the IMA totally fails and use it as a just small gas engine car but with a reduction in mpg performance. There must be reasons this won't work as it seems too easy. 3. Are there "fixes" either I can do, or my mechanic can do such as: charging up the IMA system when parked (running the RPM to 5000 for several minutes as I believe someone suggested); driving the car and making sure I charge up the IMA by "coasting" down hills as much as possible; other ideas??? 3 |
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We have a 2009 Hybrid, and the IMA light came on. The report from the dealer was that the battery was bad, and needed to be replaced! (Seems a bit premature; have had the car about three months!) The part is backordered, and could be 3 - 4 weeks. We know of one other local owner with the same problem. It was replaced, and then the replacement went bad a few days later. Even the dealer mentioned the word "lemon." We have been fortunate with our dealer. They gave us a free rental (new Civic, non-hybrid), without any questions. But this suggests that there is a problem with this component. And from reading the other posts here, it is not a new problem. How do we get Honda's attention?
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Replying to: MB_in_MN (Jan 06, 2009 5:33 pm) |
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