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Honda Accord (2008-) Maintenance and Repair

1122 messages,  Last post on Nov 20, 2009 at 8:31 PM

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What is this discussion about? Honda Accord, Sedan


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#526 of 1122
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 1122
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.
#530 of 1122
Re: Headlights Dim with A/C Condenser ON [rich505] by elroy5
Jul 06, 2008 (4:13 pm)
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Replying to: rich505 (Jul 06, 2008 1:25 pm)

There is a lengthy thread on another forum about the headlight dimming issue. From what I've read, only the 08 4 cylinder Accord does it. Some say it is the ELD (Electric Load Detector), which is located in the under hood fuse box. The ELD would be my guess for the cause. The techs say that "all Accords do this, and it is normal", but there are many 08 (4cyl) Accord owners who disagree.
#531 of 1122
Re: Headlights Dim with A/C Condenser ON [elroy5] by rich505
Jul 06, 2008 (5:00 pm)
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Replying to: elroy5 (Jul 06, 2008 4:13 pm)

Very interesting! You are the first person, I think, to mention the ELD. Is it: a) not working; b) is working as designed; c) or the engine management system A/C idle-up can't respond quick enough when the compressor kicks on?
 
I had issues with my 84 Accord which was one of the first made in Ohio and was pre-fuel injection days. The idle speed when set at the 750 spec would drop down almost to the stall point. Honda's cure was to keep the A/C on so the A/C idle-up kicked in. I adjusted the idle speed to 1000 (ah the days of carburetors).
#532 of 1122
Re: Headlights Dim with A/C Condenser ON [elroy5] by rich505
Jul 06, 2008 (5:11 pm)
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Replying to: elroy5 (Jul 06, 2008 4:13 pm)

I just searched the Honda forums and found a reference back in 2006.
 
The ELD, first implemented in the middle 90's, cuts the output of the alternator under low load to increase gas mileage. That might explain why the lights dim sometimes when the A/C kicks on.
 
Too many doodads all in the name of gas mileage.
#533 of 1122
Re: Headlights Dim with A/C Condenser ON [rich505] by elroy5
Jul 06, 2008 (5:30 pm)
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Replying to: rich505 (Jul 06, 2008 5:11 pm)

Back when I had my 92 Accord I was under the impression that the ELD would increase the idle speed when an Electric Load was Detected, but now techs say it increases the output of the alternator. Either way, some owners have had success changing the ELD. On some Accords the ELD is part of the fuse box, so those are not cheap to replace ($250-300). Some are separate parts.
#534 of 1122
Re: Headlights Dim with A/C Condenser ON [elroy5] by rich505
Jul 06, 2008 (5:39 pm)
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Replying to: elroy5 (Jul 06, 2008 5:30 pm)

That post mentioned something about a service bulletin explaining the ELD. They didn't reference the bulletin number, date, just that it was mentioned in a previous post. The post mentioned something about the ELD being made by DELCO.
 
I found this doing a Google search for ELD + ELD:
 
http://findarticles.com/p/articles/mi_qa3828/is_199907/ai_n8866330
 
#535 of 1122
Re: Headlights Dim with A/C Condenser ON [rich505] by elroy5
Jul 06, 2008 (6:04 pm)
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Replying to: rich505 (Jul 06, 2008 5:39 pm)

There was a TSB for the ELD issue, but it was on previous generation Accords. Sounds like it could be a lot of things including the ELD or the alternator.

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