What were you smoking? :sad:

Cool, it is the P0506. I drove it for two days, still wouldn't idle after got warm. Dealer is suggesting new MAF, new air filter and clean the throttle body.

It had been having problems only on occassion, specifically when driving around 75 mph for a long time...(over our passes etc) it would stall at the light when I would get off the freeway. After a couple of starts it would be fine. It's been fine for several months now (now 75 mph), plenty of power, and now after disconnecting the battery it's not idling.

I've done the 80 pedal pumps, driving it quite a bit over the two days. we'll see. Car's history... has 185k (love the thing) had a new engine put in on warranty at 95 K...Thanks guys.

when driving around 75 for a long time? Have you check your fuel pump ? Sounds like that thing is going south.

sorry I didn't bother to read the previous post.

hi guys... Its running well again. Wanted to thank everyone for posting here and elsewhere...been very helpful.

Turns out the new air filter...cleaning the MAF and cleaning the throttle body did the trick. Its idling better than before.

Paul at university mazda in seattle is great. Didnt try to sell me things i didnt need...gave it a few days of starting and driving to see if that was it...was just trying to fix it not sell me.

Thanks again everyone..hope this helps others with the cel p0506.

Hey guys, I'm having a similar issue as the OP. My car has AEM intake, RB Exhaust and a BHR Ignition. All mods were done in early June. I never had any problems with idle until the last couple weeks. I used to have the occasional hard start but never a big deal and now the last 4/5 times i've started my car its been a hard start. I figured the Ignition may have been able to alleviate the hard starts but obviously i could be wrong. SO i'm having consistent hard starts and occasionally at idle i can hear and feel my RPMs drop as if it was going to die but i've never had it actually die. Any help would be awesome guys.

Just to backup Grace Excel on this.... It must be different per car and maybe per factory flash, that I cant say for sure just my thoughts. In his defense every time I have changed anything to do with the ignition (150k on mine, owned since new, 4 sets of coils, 3 sets of wires, 6 sets of plugs) it has had to go through about a 3 cold start relearn process after batt disconnect to fix the "die at idle" issue.