Just had a tune up and fuel system cleaning on my 2006 honda element. picked it up from the shop. An hour later went to start it and it was completely dead. I jumped it. it started right up and then died again once i touched the pedal.

The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum leak. Check and clean anything to do with idle air system.
How long since a tune-up?

HONDA ELEMENT 2003 2006 COMPLETE WORKSHOP SERVICE MANUAL


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Get Honda to put it on the computer and it will tell you what is wrong
May be a bad connection in the system.

There are several cases: Fuel system is dirty or your pump not working properly, Computer box connector lose, spark plug worn out, Tune up and high voltage not sufficient.

Start by removing the battery cables and giving them a good cleaning with a battery post cleaning tool. If it still will not start suspect the battery has shorted out and must be replaced, especially if the battery is the original battery that came in the vehicle. You can try hooking it up to a battery charger but if you see it will not take a charge it is bad. Remember when you disconnect the battery you will have to insert the 5 digit code to get the radio to work again. This very thing happened to me last month on my 04 Accord. Battery was good and 2 hours later it was bad. Replaced the battery and all is well.

it sounds like distributor check for spark when it wont start if there ig no spark then its faulty

100k check air filter, have timing belt inspected, rotate tires, plugs and wires should be good for another 20-30 but doin it now would not hurt. Have an intake cleaning done. There's a intake cleaner TKO that works well.

Sometimes when a fuel filter is stopped up,and you change it,the fuel pump later,will go out,cause of the strain on the pump.

SCAN IT.CHECK VECHICLE SPEED SENSOR.

replace the heater core