MAF cleaning... Easiest project yet and a must.

[mptoledo]

The battery only temporarily takes care of the codes. They would come back on after about 40 to 60 miles. I am over 150 miles and car is back to normal.

Apparently the cleaning did take care of the white smoke on start up. Smoke before, no smoke after

You will want to disconnect your battery after the job is done anyways to reset the cpu, so you might as well do it before to prevent any possibilities of shorting something.

[blue2000s]

It's been noted on this board, and I've personally observed as well, that the car will smoke at startup if it wasn't warmed up on the previous run before being shut off. On my car, it hasn't smoked if the car was warmed up when I shut it off previously.

The MAF can't have anything to do with smoke at startup. The MAF is technically known as a hot-wire anemometer. It functions by monitoring the current through a wire at a known temperature and calculates an airflow based on a convection coefficient correlation. It requires that the anemometer is up to operating temperature, which it is not when you first crank the engine.

[mptoledo]

I don't know why you are arguing with me. Before the Mass airflow my care would startup, spit and sputter for a couple of minutes and it would turn my garage into a white fog zone. After the air flow clean, it starts fine, idles fine, no codes and no smoke. I don't know what to tell you. I am just making an observations. Haven't had smoke in 300miles since. Maybe it was something else that mysteriously fixed itself. I really don't know. I have had the cloud of smoke in the past on start up when I hadn't driven it for awhile, but this was much more profound and in greater volumes.

[blue2000s]

Originally Posted by mptoledo

I don't know why you are arguing with me. Before the Mass airflow my care would startup, spit and sputter for a couple of minutes and it would turn my garage into a white fog zone. After the air flow clean, it starts fine, idles fine, no codes and no smoke. I don't know what to tell you. I am just making an observations. Haven't had smoke in 300miles since. Maybe it was something else that mysteriously fixed itself. I really don't know. I have had the cloud of smoke in the past on start up when I hadn't driven it for awhile, but this was much more profound and in greater volumes.

I guess I misunderstood. The smoke came after it was running then, not from starting? That makes sense.

[saturk]

How long was the battery disconnected during the MAF cleaning? What about reprogramming the radio?

[chitowndad]

Blue2000S,
IMO, you're correct... I've also noted that if I pull the car out of the garage, wash it, put it back in the garage then take it out 2 days later it blows blue smoke - everytime. If I drive it put it away and take it out the next day for another drive it doesn't blow smoke.

I have a theory that it has to do with the pressure in the engine when you start it but don't let it warm up it has higher pressure so the oil seeps through and when it's warm the engine doesn't have as much air pressure in it... This is just a theory, I'm not a mechanic.

-Steve

[mptoledo]

Yep we probably were talking about two different, but similiar things

As for the radio codes: I swapped out the hunk of junk last year(best thing I have done to date). You will need your code. It only takes about 10 or 15 minutes, but I always let it off for an hour or even overnight.

Let me reiterate this. This operation is almost free and almost foolproof. As long as you don't short out the sensor when you take it out, no harm can come from this and it really needs to be done from time to time, Heck I would do it Yearly or Bi-yearly.