[kevera]

My service engine light keeps coming on.The code says 25.So I checked the sensor and it seems to be flaky.Could this sensor cause any hesitation upon acceleration.Any help would be great.

 

[hdunbar]

Yes it may cause your engine problems. Change the sensor if its flakey.
The IAT and MAT sensors are the same thing for 90 and earlier cars.

Heres a link to some more sensor info:

http://wellsmfgcorp.com

 

[sunbirdgt93]

hdunbar:

Ok, so can u explain to me what's the difference between IAT and MAT sensors? It's the same sensor or....?!
:roll:

 

[hdunbar]

MAT and IAT are the same air temp sensor for 90 and earlier cars and relates to a code 25. The name depends on where is was installed manifold or intake. There is only one air temp sensor used.

A MAP sensor is a different sensor. It measures the intake vacuum which is related to the load on the engine.

Hope it helps

 

[kevera]

That's right,it's the mat sensor.How does this sensor affect driveability.

 

[stu71584]

correct me if im wrong, but i believe that what it does is adjust the richness of the fuel mixture depending on the temerature of the air being drawn through the intake. if the air is colder, then more fuel is required to prevent a lean condition from occuring.