Check Engine light on/CODES PO101 & PO174


S10SNODOG
03-26-2009, 10:38 PM
Hello I have a 2003 chevy S-10 crew cab VORTEC V-6 motor with 118,000 miles and my Check Engine ligth came on a week or so ago went to Autozone and they put the computer code checker and two codes came up PO 101 & PO 174 what are they for , and what should I do to correct this problem THANK YOU very much Anthony

mike2004tct
03-26-2009, 10:54 PM
Sounds like a bad MAF sensor.
Didn't the guy at the parts store recommend anything, part wise?

Here's a link to the codes;

http://www.automotiveforums.com/vbulletin/showthread.php?t=553044


Do a search up in the How-To/Technical section (section above this one). Somebody will have had the same problem.

S10SNODOG
03-27-2009, 09:23 AM
I do not have access to " How-To/Technical section " I DONT KNOW WHY PLEASE HELP I have to get this fixed thank for all your help and information Anthony

MT-2500
03-27-2009, 09:27 AM
I do not have access to " How-To/Technical section " I DONT KNOW WHY PLEASE HELP I have to get this fixed thank for all your help and information Anthony

For the how to section.
Go to the s-10 forums.

MT-2500
03-27-2009, 04:42 PM
I do not have access to " How-To/Technical section " I DONT KNOW WHY PLEASE HELP I have to get this fixed thank for all your help and information Anthony

Try this link.

http://www.automotiveforums.com/vbulletin/forumdisplay.php?f=2069


If that does not work you may have to catch a moderator.

Let us know if you make it.

MT-2500
03-27-2009, 05:01 PM
How many miles on tune up end?
Good Ac Delco plugs and filters?
What is fuel pressure reading?

Code101 is MAF sensor is not reading what the computer has figured out for the reading.
In other words the VCM is not happie with the MAF sensor reading.

Code 174 is fuel trim is lean on bank 2.

First thing I would do is confirm proper fuel pressure 60/66 lbs specs.
Also clean MAF air flow sensor with MAF sensor cleaner.

Make sure air filter and air intake hoses are good shape and no air leaks on them.

Do you have a K&N ait filter or cold air intake setup?

To repair for the codes you have you will need a good engine capable scanner and some good repair info.

Get the code repair flow charts for the codes and go threw them.
Replair flow charts are in a factory repair manual or a All Dat online sub,
http://www.alldata.com/products/diy/index.html

Let us know how it goes.

b1lk1
03-27-2009, 08:34 PM
I bet cleaning it would go a very long way to making it run better, did wonders for my truck.

S10SNODOG
03-28-2009, 08:00 PM
CLEAN what? not to sure what your talking about ......I think you mean the MAF sensor If so where is it located and I will do that tomorrow and no K & N intake set up STOCK WITH A K & N FILTER HOWEVER but that would not do it as far as a good tune up NO it has not had one I can do it my self I bet but just not sure what to replace I guess 1 is new plugs can anyone set me up with a list of things to do as far as a good tune up GOES I need to save some money so I will try to do as much as I can thank you all for your help!Anthony

MT-2500
03-29-2009, 09:45 AM
CLEAN what? not to sure what your talking about ......I think you mean the MAF sensor If so where is it located and I will do that tomorrow and no K & N intake set up STOCK WITH A K & N FILTER HOWEVER but that would not do it as far as a good tune up NO it has not had one I can do it my self I bet but just not sure what to replace I guess 1 is new plugs can anyone set me up with a list of things to do as far as a good tune up GOES I need to save some money so I will try to do as much as I can thank you all for your help!Anthony

On cleaning the MAF sensor drop down to the S-10 how to department.

The oil from a K&N filter sometimes winds up in the MAF sensor sensors.

You will Find it in the air intake between air filter and TBI.
Remove it and get some MAF sensor cleaner and spray down the little wire sensors 3-4 times.

On tune up Good AC Delco plugs and wires and cap and rotor and fuel filter is a good start.

Always check fuel pressure for up to par.
After tune up and cleaning MAF sensor clear codes and drive and recheck for codes.

Post back how it goes.

S10SNODOG
03-31-2009, 09:20 AM
CAP & ROTOR ??? It's an 03 fuel injection I guess all the other stuff then.

MT-2500
03-31-2009, 09:59 AM
CAP & ROTOR ??? It's an 03 fuel injection I guess all the other stuff then.

Sorry about that .
I was not watching the 03 part.
Yes on other stuff.

Did you find the S-10 how to department?

S10SNODOG
04-01-2009, 09:12 AM
No I still could not access it tried to find a moderator to help out but could not find one Thanks Anthony

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