Posted by RandyB(MI) on June 04, 2016 at 18:50:22 from (75.133.135.127):
In Reply to: Any GM Mechanics? posted by Steve@Advance on June 04, 2016 at 12:07:12:
Check to make sure it hasn't had one of the "super duper hp adder" K&N oilable air filters installed by previous owner trying to get that elusive mpg and hp . These filters always get oiled too much and the sticky oil carries through and deposits on the MAF sensor and then minute dust particles stick to that and pile up to insulate the sensor wires in the MAF sensor and basically send the signal to the ECM that there is very low air volume/velocity and therefore it shuts down the fuel to injectors and then that in turn makes the O2 sensors read out of spec and screws up everything. Take off intake boot and get a can of MAF sensor spray cleaner and spray clean. Then if it was ,in fact, a "K&N", get rid of the thing. They are for racing in the dust not everyday driving.
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