p0171, p0174, p1083, p1085
 

The truck's not running rough, or having performance issues, but suddenly started throwing these codes. Been looking through the forum for clues, and will be taking a look this morning, though I can't get under the car or do anything strenuous... still recovering from a concussion, and apparently have some spine issues now. If I don't find anything, I'lll give the list of possibilities to the mech when he takes it to fix the bumper.

:yawn: back to bed for me. Get tired easily now :P

Could be the MAF. If it is the MAF don't buy one of those cheap MAF on sleazebay or Amazon. Either get a brand new Siemens MAF or buy a use OEM Siemens MAF.

Could also be your DISA Valve.

I second the purchase of an OEM MAF. I did the cheap MAF and ended up having to purchase the OEM MAF a few weeks later.

Ugh... has to happen while I'm off work and semi-broke. I'll try to eliminate the cheaper possibilities first.

Mine had all the same issues. ran great. but setting codes. all tied to fuel curves. turned out to be the intake boot was split where it goes off into the CCV. $18 boot, and I was back to zero codes.

Clean the MAF first. Then clear the code and see if they come back. That's your cheapest option at the moment.

:iagree:

Hmm, the crankcase cap was a bit loose. Set it tight, cleaned MAF, cleared the code. 55km so far, no return of the code. Might have been the cap. MAF looks new, btw. Still gonna have the mech check out the intake boot. Fingers crossed.

MAF's clean electrical wires are light grey colored...when it's dirty, it's got like a black dust/fuzz on the wires . hopefully you sorted out the issue and the codes won't come back.