BlakSC

sucked water up intake, changed all the fluids and car (sc400) originally idled just fine. Now it constantly searches for a RPM between 1200-2000rpm.

What would cause this? The check engine light is not on. I unplugged the intake tubing and let the engine run with the MAF sensor hooked up, but not actually in the intake. The car idled better, at least it was steady, although it did idle at about 1800, plugged the MAF back inline and it goes back to searching.

What should i do?

replace the MAF, try to clean it? what?

Is there a wa i can use a multimeter to check this thing?

Blizzy

iTrader: (-1)

before you go replacing it, at least clean it. take it out and give it some "MAF Cleaner" (like $5) or some Brake Cleaner if you have it lying around. Both are extremely volatile sprays that evaporate about as fast as you can spray them.

I am not the hydrolocking expert; but, when it comes to replacing the MAF...clean it first. These things rarely ever fail in our cars.

BlakSC

ive been searchin the forum and i see that when the IACV goes bad it gives these exact symptoms.....

Can anyone direct me as to where the IACV would be located on the sc400?

techsc400

iTrader: (6)

Can anyone point where it is? for 95 SC4, I guess that it is near TB... Please.
I need to clean it also... idle drops after turn off the AC and sometimes engine stopped.

KC95SC400

iTrader: (3)

Its on the front of the top intake manifold. It has the large hose going to it from the air intake tube.

I had the same problem, low idle, engine stalled once. I took it off and cleaned it out, so far so good.

KC

techsc400

iTrader: (6)

Is that 1 or 2 in the picture?

techsc400

iTrader: (6)

Anybody,,, please point it out for me.

Luke_in_SD

I talked to a lexus tech today, Our MAF sensors are different from other cars, and that cleaner is bad for it. I would just use maybe those air duster cans instead. This makes me also not want to buy a K&N filter

over40driv

I used MAF cleaner on my car, didnt seem to make any distance.