Check Engine Light Burns Lots of fuel (MAF?)

204runner

New member
Hi so I was doing some research and a lot of people have had success cleaning their MAF sensors and I would like to clean mine (95 3vze) but cant find a specific image of it or a thread about the 3vze, I have taken the metal top off my air box but have not opened it up yet.

Does the 3vze even have a MAF?

I am running stainless piping for intake tubing (removed the stock). But I am burning alot of fuel (yes its cold out) I have never had this bad of mileage maybe 200 miles to a tank. And its seems to be running really rich (smokey).

Any help is appreciated. thanks.

204runner.
 
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So I did some diagnostics and got these codes.

24...
INTAKE AIR TEMPERATURE SENSOR SIGNAL--OPEN OR SHORT IN INTAKE AIR TEMP. SIGNAL
--INTAKE AIR TEMPERATURE CIRCUIT
--INTAKE AIR TEMPERATURE SENSOR
--ECU

25...
AIR/FUEL RATIO LEAN INDICATOR--LEAN SIGNAL SENT TO ECU FROM O2 SENSOR
--INJECTOR FAULT(S)
--FUEL PRESSURE
--OXYGEN SENSOR
--AIRFLOW METER OR MAP SENSOR
--IGNITION
--ECU

31...
MANIFOLD AND/OR AIRFLOW METER SENSOR SIGNAL CIRCUIT
--AIRFLOW METER/CIRCUIT
--MANIFOLD PRESSURE SENSOR/CIRCUIT
--ECU

Now what I really was hoping to get one code, but here they are. Frick!
 
All those codes are related to the MAF. Unfortunately, cleaning the MAF frequently ends bad.
Start by checking all the connections.
 
thanks for the reply, It is so smokey in the winter no antifreeze or oil smell. all fuel.

All the connections are tight and clean, maybe I should look into a used MAF?

I probably should do the o2 sensor as well as it has been running like this for a while, probably dirty, also I am running 2.5 exhaust to a pro flow muffler (no cat) so that may be another reason its so "smokey"?

I unplugged the battery and it shut off the check light for about 15 miles. I will check codes again tomorrow and see how many it throws.

oh and it is -30c out so is this going to effect the intake temp?

Thanks again.
 
Last edited:
ok so I cleaned just about every electrical plug on the ecu and vafm and am now only getting code 25 (sweet)
I am guessing a new o2 sensor should fix this, 25 means lean condition I am wondering if the o2 is filthy then It probably is not reading much of the exhaust passing by it. Would this make sense?

204
 

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