This is a common problem with that many miles the MAP sensor is off but not enough to trigger a check engine light it effects the mixture which causes the codes. I would replace the MAP. Here is a diagram to help you see what you are in for when doing the job.
Here is the location on your car. Check out the diagrams (below).
Please let us know what you find. We are interested to see what it is.
Cheers
Image (Click to make bigger)
SPONSORED LINKS
Tuesday, May 20th, 2014 AT 3:18 PM