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The mass air flow sensor may be at fault.
does not have one just a map sensor
In the air intake snorkel between the air filter box and the throttle body.
clean or replace your mass air flow sensor
The MAF (Mass Air Flow) sensor would be found in the air intake snorkel between the air filter box and the throttle body.
You won't find one. The 1991 Chevy S10 doesn't have a MAF sensor.
It doesn't have a map sensor, it has a maf (mass air flow) sensor instead. The maf sensor would be located in the snorkel between the air filter box and the throttle body.
a manifold absolute pressure sensor measures engine load by reading intake vacuum. a mass air flow sensor measures air flow as it enters the engine. so, they are two different sesors but both pretty much supply the same info to the ecm. they read engine load to determine how much or how little fuel is need for the engine to operate at it's best.
It is built into the Mass air flow sensor. That is where the air intake hose comes off of the air filter box and goe's to the engine. Just as it comes off the air filter box, it will be right there. The air intake duct work clamps to it. It has electrical connector hooked to it.
Yes My 98 S10 ZR2 drives fine without it, It even has more power. I plan to see what happens when i unhook the 02 sensor at the cat i emptied to see if i get anymore improvements.
Go online to a large auto parts store and bring up the MAF part number for each vehicle. If the numbers match, your good to go.
The air flow sensor is located between the large round hose that connects to the air filter and the engine. It is connected with a strap that has a screw on it. Remove the old **make sure you note the direction of the arrow on the air flow sensor then put the new one back with the arrow facing in the same direction as the old . Reconnect hoses if you had to disconnect them. Also be careful to NOT push on the screen at any time. They are fragile and might break. I also use some type of air pressure to blow the dirt out of the electrical connection that should also be located on the hose and secured with a clip.