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Honda Accord (2008-) Maintenance and Repair

1114 messages,  Last post on Nov 05, 2009 at 10:32 AM

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What is this discussion about? Honda Accord, Sedan


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#520 of 1114
Re: Oil Change Frequency [rkirchoff] by duke23
Jul 04, 2008 (5:09 pm)
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Replying to: rkirchoff (Jul 04, 2008 4:07 am)

My understanding is that the original factory oil contains special additives that are designed to aid the engine break in process. So changing oil less than 15% life is contrary to what Honda specifically designed the factory new Accord oil for. I believe though that the owners manual states it should be changed at 1 year regardless of mileage.
#521 of 1114
Re: Headlights Dim with A/C Condenser ON [ljgbjg] by rich505
Jul 05, 2008 (4:49 pm)
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Replying to: ljgbjg (Jun 27, 2008 9:47 am)

The A/C Condenser does not turn on and off!! The condenser coil is the heat exchange radiator in front of the cooling system radiator. The condenser coil cools off the hot liquid Freon after it leaves the compressor. The liquid Freon then passes through an expansion valve where it turns into a gas and passes into the evaporator coil inside car where the now cold gas removes heat from the air inside the car. The gas then goes back to the compressor to be liquified again. The electrically-operated A/C compressor clutch turns the compressor on and off.
 
I'll bet the problem with the I4 Accords and the lights dimming has to do either with the current draw by the compressor clutch or the load on the engine when the clutch kicks on. Does this problem happen with the V6?
 
I had all sorts of idle problems with my 1984 Accord. I traded that for a 1984 Toyota that had fast idle problems. In fact every Toyota I have owned since my first one in 1982 (I4 and V6, stick and automatic) has had what Toyota calls a "heat soak problem". If you shut the engine off while warm and attempt to restart it after 10 minutes the engine will die and you have to crank it several times to restart it. Other than a ECU-fix for one of them Toyota called this a feature not a problem!
#522 of 1114
Re: Headlights Dim with A/C Condenser ON [rich505] by macsan
Jul 05, 2008 (7:29 pm)
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Replying to: rich505 (Jul 05, 2008 4:49 pm)

The thing that comes on and off is the electric condenser fan motor. When the car is travelling a bit up to highway speeds, the system doesn't call for the a/c condenser fan motor to kick in that much. It kicks in more at stop lights since there is no air moving through the coils to cool the condenser. The air flow turns the hot gas back into a liquid. That in turn gets sent back to the evaporator to cool the interior again. Thats why the lights "flicker a bit at night with the A/C on and parked and idling. You can see it kicking on and off with the hood up-its next to another fan motor-the engine coolant radiator fan motor. I hope that helps. MAC
#523 of 1114
Re: Headlights Dim with A/C Condenser ON [rich505] by ljgbjg
Jul 06, 2008 (2:55 am)
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Replying to: rich505 (Jul 05, 2008 4:49 pm)

Please do no attribute inacurate statements to me. I never said the condenser goes on and off, nor did the person to whom I was replying - there are only two things that could go on and off with the AC - the compressor (through the clutch mechanism) and the condenser fan. SOMETHING is causing a major power draw that the electrical system seems inadequate to handle, but the flickering is endemic - the majority if not all 2008 I4s have the problem.
#524 of 1114
Re: Headlights Dim with A/C Condenser ON [ljgbjg] by rich505
Jul 06, 2008 (5:58 am)
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Replying to: ljgbjg (Jul 06, 2008 2:55 am)

Sorry about the placing of the post. This was my first post on Edmonds CarSpace and it was directed at the person who made the original statement about the condenser going on and off.
 
I absolutely agree with you regarding the problem. I had one of the first 84 Accords that was made in Ohio. I had a similar problem with the headlights dimming when the A/C came on. It also had a problem with the idle dropping too low sometimes. It was in the days before fuel injection and I had to set the idle to 1000 RPM from the normal 750 to keep the engine from almost dying.
 
I was in the process of buying a new car and had driven the 2008 I4 Accord and the 2009 I4 and V6 Camry.
 
Honda's solution to the idle dropping problem was to leave the A/C turned on so the fast idle kick up was working all the time. Of course I took delivery of this car in December 1983 so running the A/C in the winter wasn't a good solution.
 
It has to be one of several possible causes:
 
1. The compressor clutch is momentarily drawing more power than the system can provide or the startup load of the compressor is very high.
 
2. The clutch relay or wiring is too small to carry the startup current draw.
 
3. The load is so high at clutch turn on that the engine cannot provide enough power to the alternator. You would think the battery could provide enough reserve.
 
Does the problem happen with both the 177 and 190HP 4-cylinder engines?
Does it happen with the V6?
Do the lights dim significantly with the engine and the key in the On position?
#525 of 1114
Re: Headlights Dim with A/C Condenser ON [rich505] by dpmeersman
Jul 06, 2008 (6:03 am)
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Replying to: rich505 (Jul 06, 2008 5:58 am)

I have not had this issue with my V6 nor do I remember any other V6 poster experiencing this problem.
#526 of 1114
Re: Headlights Dim with A/C Condenser ON [dpmeersman] by ljgbjg
Jul 06, 2008 (6:42 am)
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Replying to: dpmeersman (Jul 06, 2008 6:03 am)

I agree.
#529 of 1114
Re: Headlights Dim with A/C Condenser ON [macsan] by rich505
Jul 06, 2008 (1:25 pm)
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Replying to: macsan (Jul 05, 2008 7:29 pm)

The A/C compressor cycles on and off as well. I thought the problem was the lights dimming when the compressor kicks on, not the A/C condenser cooling fan. But that is an interesting possibility.
 
This is off-topic but in 1994 the V6 Camry employed hydraulically operated A/C condenser cooling fans using the cooling system water/antifreeze.

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