Question for John Robison

John
To recap: 1999 DII 104,000 miles. You worked on it about 25 months ago, replaced the MAF and did a few other things. I'm getting P1171 & P1174 codes. I've swapped in a new LR MAF assembly but am still getting the same codes. You suggested looking for an intake leak which I will do tonight.

I've just about exhausted my skills set and will be up to see you shortly. Before I do, is there anything else I should try? I had replaced the front O2 sensors before I brought it up last time. Should I do the rears?

Thanks

Greg H
'99 DII
'68 IIa 88"