bullwinklesccr9
Newbie
- Joined
- Nov 27, 2008
- Messages
- 3
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We have a 2003 Chevrolet Tahoe, 37500 miles (1500 miles out of manufacturer warranty), we bough the truck back in March with 33k. About a month ago the check engine light came on, and we noticed it would be a bit rough at idle, but the problem was only intermittent and the check engine light went off for a bit. Last week the light came back on, and the same problem started again. Rough at idle, fine when we drive it, seems to be worse in cold weather. Then, a few days ago, it started stalling when idle. We took the car into the service center and they gave us 4 codes: p0101, p0171, p074 and p0300. However, they saw we had a K & N filter (which voided our extended warranty) and would not diagnose past that. They said 'oil from the filter has gotten on the mass air flow meter and caused symptoms,' and they offered to change the filter, clean the MAF meter and clear the codes. We said thanks but no thanks, changed the filter ourselves to a standard filter and bought MAF sensor cleaner and used that.
Nothing has changed or improved, and tonight the check engine light started blinking while I was idle. I found what I thought were related TSBs, but not to my specific year, so I'm sure they are not relevant. Any information or suggestions would be greatly appreciated. I've done some googling (how I found about about this website!) and found anything from the O2 sensor to spark plugs to fuel filters, etc. There does not seem to be one specific standard answer, but I have a feeling that just changing the sensors is not the answer. . . thanks so much in advance for any advice!
Nothing has changed or improved, and tonight the check engine light started blinking while I was idle. I found what I thought were related TSBs, but not to my specific year, so I'm sure they are not relevant. Any information or suggestions would be greatly appreciated. I've done some googling (how I found about about this website!) and found anything from the O2 sensor to spark plugs to fuel filters, etc. There does not seem to be one specific standard answer, but I have a feeling that just changing the sensors is not the answer. . . thanks so much in advance for any advice!