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2004 2.4 Accord stalls at idle...

17210 Views 10 Replies 8 Participants Last post by  GolftangoV2
2004 2.4 Accord with LPG. The car drives lovely but when pulling up to lights or a T junction, the revs drop and don't stabilise normally. They just keeps falling and then the engine cuts out so it's a case of riding the clutch and keeping the engine going whilst I stab the brakes or use the handbrake.

So far, I've paid 4 garages to have a look and so far have been told it's the battery, ECU, O2 sensor and to get Honda to reset the computer, which they won't do, so no one can find the definitive problem, just come up with expensive things to try. ARGH!

The ABS lights are on now too but this idling problem was on before that light was on so I'm not sure that's the problem.

I've changed the battery and the O2 sensor and the problem is still there. It doesn't matter if it runs on LPG or petrol, it still does it.

The ECU is an expensive part to swap out just in case that's the problem. Could it be the MAF, the idle control valve, could cleaning out the throttle body help...?

Any advice would be very much appreciated.

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Thunder: Welcome to the forum. You should do the quick and cheap things right now.

1) Clean Mass Air Flow sensor (MAF) search for member "golftango" for his write-up on cleaning the MAF and throttle body. It will take you 20 minutes and cost $12.

2) Go to PepBoys, or Advanced auto, etc and get one of those free battery and alternator tests. They are not foolproof, but can quickly eliminate that from your culprit list.

3) If that does not solve the problem, the next thing I would do is look at the Idle Air Control valve. I gotta run out here in a minute so I can't search for you, but there are a few posts about the IAC valve as well as a few YouTube videos on Honda's IAC.

Usual questions: How many miles, how long have you owned it, what work did you do recently, do you live in cold/hot climate, etc?
Wow, I'm being quoted in a thread?! :thmsup:
Ha ha....I've referenced you about 20 times since June when I saw your excellent write-up (and photography AND love of aviation) on the MAF and throttle body. Heck, you even showed an excellent spot to Seafoam the mighty 4 cylinder. All of it was simple, clear, and with insanely great photos- what a DA write up ought to be....

(lots of new owners in need of fluid changes and simple fixes this summer)

Funny, but that is the first time I simply wrote "golftango's write up" instead of the 19 times I wrote "golftango's EXCELLENT write up". Royalty check is in the mail though...
LPG = Liquefied Petroleum Gas or Propane
Call Hank Hill....he'd know what to do.:banana:
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