Question about 2004 Honda Accord

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I am having a problem with my 2004 Honda Accord Sport 2.2 Diesel- here is my issue-- in cold conditions the heater plug light flashes continuously and the engine looses power allowing only revs up to and under 2000- it loses pick-up and performance. I brought it too my mechanic who did a reading on it in mild weather and could find no fault- yesterday the heater plugs flashed and performance slowed again and going up a hill the car began to chung slightly then the engine management light came on and the car died. After about 5-10 mins I was able to start the car and drive very slowly to the garage.

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Do you plug it in at night and in cold weather? Sounds like a fuel problem. Check your fuel filter and add conditioner to your fuel. Hope this helps.

Posted on Jan 07, 2009

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Glow plug light on my accord 2.2 diesel 04 need it off ASAP

Replace your glow-plugs with the proper ones from DENSO.

Mar 21, 2015 | 2004 Honda Accord

1 Answer

1991 honda accord wagon...the S keeps flashing off and on seems to jump between sport mode and standard...what could this be?

This is your transmission control unit telling you there is a problem. I have another post here ( with details on how to diagnose. This link says "flashing D4 light" but the issues it the same. 90-91 accords have flashing S lights for TCU errors, and 92-93 have flashing D4 lights.

Jan 06, 2011 | 1991 Honda Accord

1 Answer

My glow plug light does't always come on first time I turn the key on my 2004 Accord diesel, when this happens the car just turns over and won't start. If I wiggle the key a few times the light comes on...

hi, there maybe problem with the ignition, the heater trigger on the ignition may be a little loose thats why you have to shake it and comes to contact on a certain time. check the heater relays too for it maybe faulty already. hope this helps

Feb 19, 2010 | 2004 Honda Accord

1 Answer

Engine overheats. plus once engine running a green flashing light with a (s) on it.

#1. Check coolant level,(engine stone cold and not running) change to a new one if not done in last 2 years.
#2. Change thermostat to a new one, Honda thermostat only, also every 2 years.
#3. In the thermostat housing there is a "coolant switch A" you should have a plug going to it, unplug it and while your engine is running almost at operating temp, bridge 2 wires with a wire, your cooling fan/fans should come on, also check for continuity you should have no continuity when engine is cold and continuity when the engine is at operating temp.

#4. If there is no continuity when engine is at operating temp then you need a new "coolant switch A"

Let me know here, if you need more help.

Dec 27, 2009 | 1992 Honda Accord

5 Answers

2004 Honda Accord Air Conditioner Not Working

Sorry for the delayed response. For future reference, the blower motor resistor in an 04' Honda Accord is located under the glove box and a little to the left if you are facing it (the glove box). You just need to pull out the plastic panel (yes, you can just pull it out by hand, no tools needed for that). It should be right on the fire wall with a plug going into it. If you reach in there and pull the plug (it has a little notch so it clips into the resistor more securely; make sure you push the clip in) it should have 4 flat prongs on it that go into the resistor. The resistor itself will have 2 phillips head screws that are holding it into the fire wall. Unscrew them and you have the resistor. If you can unscrew both screws before unplugging, it will be easier to see how it unplugs. I know this sounds complicated but once you get in there you will notice it's fairly easy to change out.

May 15, 2009 | 2004 Honda Accord

1 Answer

Light is coming on

check your oil level it may be a vtec related fault code, failing that it will need to be plugged into a code reader.

Dec 30, 2008 | 2004 Honda Accord

2 Answers


the oxygen sensor maybe unplugged, it should be in the manifold, sounds like itss running rich, once fault fixed lean sparkplugs and reset ecu

Jul 04, 2008 | 2004 Honda Accord

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