This light came on for me a few days ago. Went to auto zone and got it checked out and they gave me this code. They listed like 4 reasons the code could be on.
1. Vacuum hose off, cracked, or passage blocked.
2.Throttle body intake tube loose, off, or cracked.
3. barometer / MAP defective
4. Vane Air Flow MAF sensor dirty or defective.

I have a 2000 blazer LT 4door. Just wondering if anyone knows for sure what it could be or how i can find out without having a mechanic charge me a crap load.

Also i have an emissions test this month. Does the "Guaranteed To Pass" emissions stuff work? Let me know. Thanks

 

P0107 - Manifold Absolute Pressure [MAP] Sensor Circuit Low Voltage

I would start by testing the gray wire at the connector to the MAP sensor. This is the 5V reference wire from the PCM.

 

lol i forgot to mention i dont know really anything about engines except the basic stuff so trying to take anything apart would be suicide. but since you told me what the exact issue is i can at least go to my repair shop and tell them to check that out.

thanks for the info swart

 

ok a major symptom has arrived. is takes longer than normal to start it and sometimes sounds bad. any ideas ?

 

If you are not all that good at working on things, then you may want to attempt to just replace the MAP sensor itself. I do not like to give advice like this, but I also do not like it when people get taken advantage of by mechanics.

The map sensor is on the passenger side of the intake manifold and at most will require a small screw driver to aid in removing the electrical connection. The sensor itself just pushes into the plastic upper intake. You can get the sensor from pretty much anywhere. I am partial to AC Delco parts, but if you do not have a local retailer, the dealer would be the next place to get it ($$$).

It is not that expensive of a part ($30 when I had to replace mine on my old 2000 Bravada).

 

Alright man thanks for the help. I am very much appreciative.