Suzuki Sidekick 1993 G16B 1.6 16v - BRAZIL (34-MAF)

[fixkick]

Friends,

I checked the voltages at the MAF pinouts. Actually they do not check with the expected voltages (but only a bit like the negative indicating 0.02 and not 0.05) but in a test with the car on where everything seemed ok, suddenly, the voltage dropped to 0.01, the check engine light turned on and RPM dropped down.

Again, a few seconds later, the readings went to 2.20 volts and the RPM returned to normal.

Now I'll wait to get a MAF and replace. Thanks!

thanks for your kind words.
And you are very welcome, for sure ,from Brazil. (I have property in Peru, too, so,.....)
You can not set timing of the distributor, in LIMPHOME mode, best is leave it alone , unless you know it is way off, (example someone pulled the distributor?) (if you must do this, the freeze is not working, so just ball park it(close is close enough) the freeze fails if engine not hot. and if idle switch is stuck open , at 5v. and must not be in limphome mode.

The MAF has 3 pins, all 3 matter. big time.
12vdc power pin
ground pin.
and output, output will be dead if 12v pin is not correct say 10v to 15v range good . 12v pin is the power supply pin to the MAF. if it drops to 0v, or below 10 vdc, this connection is bad. (the battery is 14.7 running so too will be this pin)
at idle the output pin must be near 1.7–2.0 volts ,spec output.
Output at 0v and 0.1, 0.2 or 0.5v are all zero volts, near zero volts out is a dead MAF when you see that happen you MUST immediately check 2 pins, ground and 12v.
connect the meters (DMM) black test wire to battery negative lug. use the red lead to back probe the MAF pins. DO know that MAFs can be intermittent, if yes are bad.
engine idling, output , goes to zero check.
pin 1 = 0v if reads 12 or 14v now, that means the ground wire to the maf is broken or cut.
pin 3, =12v (10 to 15v ) this is power, if power is lost to the maf all maf go to sleep (off line, no damage to it must goes to sleep , just like a cell phone does with dead battery)
pin 2, is output. 1.8v is common reading never ever near 0volts.
all readings with the connectors connect ed and engine idling and maf failing.
if you gun the throttle you can hit 3v easy at pin 3, if not the maf is dirty clean it with carb cleaner spray at 0.3 meter distance never up close . The element is fragile.