does anyone know what this mean? i had my computer scanned due to my service light turning on and this is the error code popping up. anyone got any ideas?

 

I am having the same problem right now.
Are you getting really bad gas mleage (I am getting 8 mpg)?
Anyone with any information would be helpful for both of us.

 

I believe that low MAF reading would indicate that you have a vacuum leak somewhere

 

Or really, really filthy MAF wires. Clean them.

 

Is there a method for finding
vacuum leaks or cleaning the MAF.

 

What was the specific DTC code? DTC 48 = MAF Circuit problems, but I don't recall there being a code on OBD-I specific to "low MAF reading".

 

i can kinda remember to what the scan had brought up since i dont have the scanner myself. i beleive it was somewhere among....

MAF LOW / Map

most i can rememeber to be honest. i noticed a hose underneath the bellow right before the MAF coming from the filter was unplugged. i plugged it back in but it still gave me the same reading after anothere scan. it wouldn't even let the code be cleared. anyone know whats going on?

 

A few things it could be ...

1 A clogged Airfilter *I dont know if that would cause it, but it makes sense*
2 A vacuum leak *Likely*
3 If the filter was recenly cleaned/brand new, it may be possible that the oil from it is coating the MAF and causing the bad readings. In which case, it would need cleaned. Im not sure how to clean it, but I know them things are pretty tiny wires, so id say use a cutip and maybe rubbing alcohol and LIGHTLY touch it.

 

ill try the cleaning tonight when i get off work. the filter is a K&N and has been on for 4 months so its not that new. i dont know of any othere hose besidess the one? anayone else have some ideas?

 

You need the exact code. If you have a "generic" code list, and the scanner detects DTC 33 or DTC 34, it will indicate "MAP/MAF high" or MAF/MAP low".... and for a 94 and up LT1 that is a problem with the MAP sensor, not the MAF sensor. You need to get the exact code, then go to the LT1-specific code list at Shoebox's Tech Pages for the best list:

http://shbox.com/1/Dtcs.htm

 

after reading your post i know that it is dtc 34 MAF/MAP low.
i hope shoebox has got something for me

 

shows this:

34 Manifold Absolute Pressure (MAP) sensor circuit (signal voltage low, high vacuum)


now what do i do? sorry to sound so ignorant. just don't wanna go the wrong way with it.

 

Something wrong with the MAP sensor, or the wire/connector. It isn't unusual for the harness connector to dry out and crumble. Check that first.

 

thanks alot for the help injuneer! it was just a broken clip on the sensor. D*** thing was just dangling there. thankss for the help.

 

Always check the obvious first.