The codes that came up for 1996 G.M.C. and where can i find these sensors?p0102/p0103/p0108/p0122/
SOURCE: 2003 Lincoln LS put a scanner on it and got 16
Unless your familiar with the cars systems
and I assume your not.
You take it to a repair shop
I have a 2004 LS V8
You can not work on that veh yourself
if your not famialiar with both OBD2
Sytems and the Lincolon LS
If you have a specific few questions
I will answer them.
SOURCE: 1996 GMC Sierra 1500 P0174, P0171,P0154, AND P0122
Tim,
Yes these codes are associated with the MAF Sensor. One can trip the others as well. I would try removing the MAF Sensor and cleaning it first (brake cleaner or contact cleaner), then if that doesnt work I'd chalk up the bucks for a new sensor. Check this link for additional info on this http://www.obd-codes.com/p0174
Sincerely,
JC
SOURCE: 2004 gmc sierra
P0102 is mass air flow sensor circuit, low input the MAF is attached to the air cleaner where the hose runs out of it... Unplug it and check the voltage supply and the ground... looking into the plug, with the tab facing up, there will be 3 connecters inside it, left to right they are.... sensor signal, ground and supply.... make sure you have 12 volts at your supply and the ground is good good luck
SOURCE: trouble code P0102
You cant clean the mass air flow.Only renew it.Cleaning it does nothing has it has a printed curcuit inside and its that that goes wrong with them.They supposed to be changed every 60kSo i would recomend you change it.Good luck hope that was helpfull.pippall
SOURCE: after changing fuel pump 2 days ago on my 97
You can test the MAF before replacing. It may be a problem with the circuit itself or just a fluke from another problem that is connected to this sensor.
There are two basic types of mass airflow sensors: hot wire and hot
film. In the first type, a very thin wire (about 0.2 mm thick) is used
as the heated element.
Components of a hot wire-type mass airflow sensor. Courtesy of Ford Motor Company.
The element temperature is set at 100° to 200°C above
incoming air temperature. Each time the ignition switch is turned to
the off position, the wire is heated to approximately 1,000°C for 1
second to burn off any accumulated dust and contaminants.
The second type uses a nickel foil sensor, which is kept 75°C
above ambient air temperatures. It does not require a burn-off period
and therefore is potentially longer lasting than the hot wire type.
A faulty MAF will cause driveability problems resulting from incorrect ignition timing and improper air/fuel ratios.
Vane-type MAF Sensors
A vane-type MAF sensor is found on many import and domestic vehicles
with EFI. All intake air must flow through the sensor. Some MAF sensors
are called volume air flow meters
A voltmeter connected to measure the signal from a MAF sensor. Reproduced with permission from Fluke Corporation.
Move the MAF sensor air vane from open to close to test it. Reproduced with permission from Fluke Corporation.
WARNING
While pushing the mass air flow sensor vane open and closed, be careful not to mark or damage the vane or sensor housing.
Ohmmeter connections to a MAF sensor. Reprinted with permission.
Resistance specifications for a typical MAF sensor with door open and closed. Reprinted with permission.
The trace of a defective vane-type MAF sensor. Reproduced with permission from Fluke Corporation.
Hot-Wire-Type MAF Sensors
The test procedure for heated resistor and hot-wire MAF sensors
varies depending on the vehicle make and year. Always follow the test
procedure in the appropriate service manual. A frequency test may be
performed on some MAF sensors, such as the AC Delco MAF on some General
Motors' products.
Satisfactory and unsatisfactory MAF sensor frequency readings. Reproduced with permission from Fluke Corporation.
A normal trace for a frequency-varying MAF sensor. Courtesy of Progressive Diagnostics--WaveFile AutoPro.
The trace of a defective frequency-varying MAF sensor. Courtesy of EDGE Diagnostics Systems.
There is also a
Mass Air Flow (MAF) Burn-Off Module Operation:
A semi-conductor control for an electronic-ignition system.
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