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Discussion Starter · #1 ·
93 Accord EX, 282K.

Recently my Accord has begun almost stalling intermittently. It always starts instantly and runs fine, but after say, 30 seconds, the engine RPM drops to around 500 and it runs rough for several seconds. It only does it sometimes, and it will do it whether I'm rolling or not. I've sat in my garage and watched it do it just idling. It only does it shortly after starting. (never had it happen later in a drive) But when it happens, tapping the accelerator doesn't spur it into going.

One other unusual symptom- possibly not related. It WAS flashing the door/trunk/brake-lamp dashboard lights somewhat randomly. SOMETIMES it was the rhythmic flash- like an alternator issue, BUT often the lights would come on, dim to 50%, come back to full brightness, sometimes fade ALMOST OUT, then come back on....spastically, rather than with an intentional rhythm. I've checked/topped my brake fluid, and my alternator checks fine according to AutoZone's 30-second testing gizmo and my battery connections are as tight/clean as I can make them. (Remember it starts instantly), my battery, distributor cap, rotor, wires, plugs...all less than a year old)

So, here I sit, with a car that almost stalls, flashes my door/trunk/brake-lights at me, and oftentimes leaves my BRAKE LAMP light lit, even though I know my brake lights are okay.

Any ideas appreciated.

Thanks!
 

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93 Accord EX, 282K.

Recently my Accord has begun almost stalling intermittently. It always starts instantly and runs fine, but after say, 30 seconds, the engine RPM drops to around 500 and it runs rough for several seconds. It only does it sometimes, and it will do it whether I'm rolling or not. I've sat in my garage and watched it do it just idling. It only does it shortly after starting. (never had it happen later in a drive) But when it happens, tapping the accelerator doesn't spur it into going.

One other unusual symptom- possibly not related. It WAS flashing the door/trunk/brake-lamp dashboard lights somewhat randomly. SOMETIMES it was the rhythmic flash- like an alternator issue, BUT often the lights would come on, dim to 50%, come back to full brightness, sometimes fade ALMOST OUT, then come back on....spastically, rather than with an intentional rhythm. I've checked/topped my brake fluid, and my alternator checks fine according to AutoZone's 30-second testing gizmo and my battery connections are as tight/clean as I can make them. (Remember it starts instantly), my battery, distributor cap, rotor, wires, plugs...all less than a year old)

So, here I sit, with a car that almost stalls, flashes my door/trunk/brake-lights at me, and oftentimes leaves my BRAKE LAMP light lit, even though I know my brake lights are okay.

Any ideas appreciated.

Thanks!
How's the voltage regulator?

http://www.hondapartsonline.net/par...cleid=204921&diagram=E640030&diagramCallOut=2

Number 2 in the diagram.
 

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Discussion Starter · #3 ·
I'd presumed it's okay, based on the AutoZone test. Is there any way to more reliably test it w/o pulling the alternator? Metering the cigarette lighter voltage while running, maybe?
 

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Discussion Starter · #4 ·
Solved my major issue.

My problem turned out to be a gunked up IAC valve. I removed the valve from the throttle body, and the screened port was filled with carbon. I sprayed it clean with carburetor cleaner, let it dry, reinstalled it, adjusted my idle (which was then too low), and I'm back-in-business. I don't expect this will resolve my spastic door/trunk indicator lights- although they haven't flashed since last night, I'm betting they're a separate issue. IF I resolve that one anytime soon, I'll update on my findings there as well.
 

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In reference to the trunk/door indicator lights... Open up the trunk and locate the latch on the body, not the deck lid. Loosen the bolts that fasten it and slide it slightly closer to the outside of the car. Tighten it back up and it should fix it. I had the same problem with my wagon hatch. Not sure, but you may be able to adjust the door ones. If you can't, check to see if the door has any small dents or bends that might just slightly put the latch out of alignment. If so, spot weld and slide hammer. :thmsup: Then you should be hunky dorey!
 
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