2000 Grand Caravan changed spark plug new plenum gasket and checked all vacume lines she idles too high and seems to miss burning excesive fuel ny suggestions on ow to correct?

Sounds like there's a leak between the plenum and lower intake. Try spraying starting fluid around the base of the plenum while it's running. If the idle changes you have a leak.

9 times out of 10 your problem is going to to be with the MAF Sensor. You changed it, was the old one bad? If not try putting the old one back in. If you bought an aftermarket MAF and didn't replace with an OEM MAF, that could also be your problem. Recheck to make sure it's seated correctly, check the wire connection.
Unless the stickers have been removed, you should have a vacuum line diagram under your hood.
Here are what you should check from top to bottom.

• A clogged, stuck, or leaking fuel injector
• Faulty fuel regulator
• Dirty or faulty mass air flow sensor
• Faulty coolant temperature sensor
• Faulty thermostat
• ECM needs reprogramming
• Dirty or faulty oxygen sensor
• Vacuum leak
• Fuel delivery problem
• Incorrect fuel pressure

-Sounds like blow head gasket, broken or burn valve.
-Do compression check each cylinder to see what you have and compare to its specification.
Or
-Was it recently rebuild?
If so then timing might be off.
spark plug wire connect to the wrong spark plug.
Vacuum line might connect to the wrong line.
Bad rotor or cap .

Good luck

Mai

Sounds like the AIC...Air Idle Control is stuck...usually located on the plenum just past the air intake hose/line...you can try cleaning the AIC before replacing it...Hope this helps.

could have a bad pressure regulator pinch off return line to see if it inproves if not prob coil cover againe very pop prob.

Could be that your coil pack has gone bad. This is not a cheap piece though, so you will want to be sure.

Does it run fine when up off of idle, or does it also seem to be missing as you drive down the road.

I would check the valves for number 6. If one or both are burned, stuck or out of adjustment it would cause your problem. If a cam lobe for that cylinder is burned or badly worn it could be the culprit.

I have a 2001 Dodge Grand caravan Sport i have a misfire in cylinder 2 i changed the spark plugs,wires,coil,map sensor,COMPUTER,had it checked for vacum leaks (nothing),fuel filter.Basically I have almost redone the whole van and i still have the same problem. Can anyone suggest what else i could try! please

the upper intake plenum...you will have to remove the plenum to access the spark plugs...usually you are able to unbolt the plenum only and disconnect the front connectors and/or vacuum lines. and tilt the plenum up and out of the way to access the plugs... take care when doing this you can damage the engine if not careful. make sure you get a new intake plenum gasket...as well as the valve cover gaskets...the rubber rings that seal the spark plug tubes from oil tend to leak causing a misfire. you already have to pull the plenum might as well do the valve cover gasket while you are so far in it.

look for a diagram under the hood follow the route for each vacum . you have a intake leak take your time and go over each side of the engine even plastic air line could be cracked