1999 s10 missing codesp0101 p0103


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1999 s10 missing codesp0101 p0103

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Auto Repair Home>> Automotive Repair>> Car Troubleshooting

timszr2
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Oct 17, 2006, 4:26 PM

Post #1 of 4 (2984 views)

1999 s10 missing codesp0101 p0103	Sign In

replaced fuel filter,plugs,wires,crank sensor,coolant temp sensor,coil still missing now codes come up po1o1 and po1o3 101 is mass air flow sensor will replacing it make it stop missing
99 zr2

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Anonymous Poster

Oct 18, 2006, 2:41 AM

Post #2 of 4 (2979 views)

Re: 1999 s10 missing codesp0101 p0103	Sign In

DanD
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Oct 18, 2006, 3:49 AM

Post #3 of 4 (2977 views)

Re: 1999 s10 missing codesp0101 p0103	Sign In

Yes a MAF can cause the engine to run poorly but just because the computer has set MAF codes doesn’t mean that it is the MAF sensor for certain.
For example the computer uses the TPS (throttle position sensor) as a way of checking the MAF. The computer knows that a certain TPS value the MAF sensor should be at a certain frequency. Now if the TPS is out of range but not so far out to set its own code the computer may trigger the codes that you are receiving?
The test procedure for these codes are fairly lengthy and require the use of a scan tool to read data or the computers interpretation of data coming from the MAF and TPS. Without the scanner you will not be able to confirm some of the steps of the procedure.
The things you could be checking for are is there any blockage at the MAF inlet and that the bellows between the MAF and the throttle is intact and not allowing false air to enter the engine.
If they are ok and you want to throw the dice and put a sensor on the truck you’ve got a 50/50 chance of it being the problem.
Dan.

Canadian "EH"

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Oct 22, 2006, 8:48 AM

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