2002 honda accord flashing check engine light and extremely rough idling?

I added some oil because i was low, that didn't seem to fix the problem. When the car is idling its is a very slow pop-pop-pop-pop but when i give it gas it goes away. Also, if i'm driving on flat or slighly downhill ground the light stays on, but stops blinking. When i go uphill it begins blinking again. Any ideas?

Dude no one can guess that, go get the "error code(s) " read at a local auto repair shop or auto parts store.

If you were low on oil, it means your eng is in poor shape, so be prepared for massive repair costs, sorry guy.

Flashing check engine light is always a misfire. They misfire under load mostly. Hondas need valve adjustments as they age. But google this to get the diagnosis procedure. There will be much content on the site s for misfires.

Honda motors all have a common problem with the valves getting tight and they need to be adjusted every 60,000 miles. You need a minimum amount of work to fix this which includes a valve adjustment, new NGK spark plugs and plug wires. If you've been driving like this for a while get the oil and filter changed too. There will be gasoline in the motor oil and that will ruin the bearings!

The light flashing means you have a misfire in the engine. Most common fixes for this is new spark plugs and spark plug wires or if you have coil on plug system you might have bad coils. Get the codes pulled and that will tell you which cylinders are misfiring.

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