I have a 2000 toyota camry 4 cyl. That stutters/sputters when in idle, to the point SOMETIMES to where it stalls out. When I put load on the engine (i.E. Put the car in drive/reverse/gear OR put the A/C on while car is in park or neutral) it stutters/sputters SO bad the car does indeed stall out (it can be restarted once put in park) but then goes right back to doing the same, I literally have to turn car on, give it a little gas and throw it in Drive in order for me to have no chance in stalling. First and foremost I changed the spark plugs AND spark plug wires, didn't help. If you google this/youtube this issue everything comes back to issues with the idle control valve, well cleaned/fixed that. No change. THEN I took it to two separate hobby shops on different bases ( obviously i'm military and even though it's a hobby shop they are certified mechanics) one of the shops assured me it was the EGR valve/switch/solenoid, well as difficult as it was, replaced that and NO CHANGE, then we checked fuel pump, it was fine, so I replaced fuel filter to be safe, still nothing helped! Only other thing one of mechanics could think of is ECU/ECM and according to dealer they want $1000+ not something I Want to pay/can afford right now but this was also do to the fact the mechanic and I checked out what we thought was THE fuse box, hoping it might be electrical/a fuse. Well we only saw/though there was one. Upon reading manual (which we did but totally over looked) there were two other smaller fuse boxes under the hood (haven't been back to point it out to mechanic yet) but could one of these fuses cause this large of a problem? If not, should the ECM/ECU be what I focus my attention on? I know it's a long question but I wanted to be as detailed as can be in hopes of coming to a resolution, PLEASE HELP!