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Cool, thanks. I just cleaned the intake system with the seafoam spray. It seems better, we'll see what happens. I have driven it approx. 20-25 miles so far.

I reset it today after installing the antifouler. I am wondering if I remove it (antifouler) and see if the problem goes away.

The EGR looked like new when I cleaned it last time. I haven't cleaned the MAFS since last year, but when I did, it looked good. After reflecting on this, I started thinking about this issue. If this thing sits for a few weeks, it will smoke a little on start up. I have thought the pcv valve...

Replaced it last month.

One thing leads to another...engine code, then coil packs, then anti fouler, now low idle and it hunts. I am trying to sell this car and I realize that the anti fouler is a patch, but I need to sell this car soon. So I had the coil pack issue causing it to buck etc. Then it popped a code for...

Anyone wanna explain the non-fouler trick to a newbie?

I have ordered 2 coil packs and a set of wires.

Wouldn't that do it all the time under load? How can you narrow it down to which one is bad?

Hey guys, big Mazda fan here. I currently own a 2003 Mazda Protege5. My family has been into Mazdas since 1970. A list of what we have owned: R100 (1) RX-2 (2) RX-3 (1) RX-4 (2) RX-7 (4) Protege (5) Protege5 (1) Thanks

CAn I get in on this? Sorry to hijack your thread....... New guy here. 1st post. I also have a 2003 Mazda Protege 5 with a similar issue. I was coming home from work and out of nowhere it starts pulling down, I could feel the car lag at a constant speed. It went away, then later that...