When i let the car sit for more then 2 days without turning it on it has this problem that would remind me of fouled plugs or broken ignition. However when i drive it to work for the day and come home it runs better then ever. When i drive it in the morning it constantly fluctuates between 700 and 1100 rpm with a pretty rought idle. It also backfires and stumbles like crazy if you try to gas it. Now i figure this has to do with plugs getting fouled but why would it all of a sudden fix itself for the drive home? If i drive the car till its warmed up in the morning- park it and turn it off and back on again it still has the same problem, its only if i let it sit for a whole days work after driving in the morning. Anyone got any ideas? Suggestions?

 

anyone?

 

Could be the water temp sensor that feeds the ECU. If the ECU doesn't get a reading from it or the reading is off, the car will run pretty crappy until it's at operating temp.

Do you have a stock ECU or PowerFC?

It could also be fouled plugs. That's always a good first thing to do when troubleshooting a problem like this - throw in a set of fresh plugs. Good plugs fix all KINDS of weird problems.

Dale

 

Old broken down plug wires are are also likely to cause symptoms like you describe. Just the moisture in the air can cause the wires to arc to ground.

 

I run a pfc, i never checked the plug wires themself gonna see if maybe that is it.