whoopassracer

iTrader: (1)

Yesterday ive been noticing that my truck seems to be loosing power. As im going from 20mph to wot, the speed increases slowly and the truck shakes like theres something plugged up somewhere. I took it to my tuner and said that everthing showed up fined, yet i got a code p0101, mass air flow low performance. I cleaned my air filter, throttle body and also my maf and it's still doing the same thing. im going to put some injector cleaner and change the spark plugs and change the fuel filter to see what it does. what could be the cause of this? could it be like some so of air leak somewhere? any help would be gladly appreciated

AKlowriderZ71

iTrader: (22)

What's your wideband say? Is it going lean when this happens?

whoopassracer

iTrader: (1)

we didnt hook up the wideband, but it would show it lean.

AKlowriderZ71

iTrader: (22)

Swap in a known-good MAF. Do you know for sure that your fuel pump is keeping up?

whoopassracer

iTrader: (1)

Well this morning i changed out the spark plugs and put it new ones with wires. The old plugs were pretty much done, it seemed to have fixed the problem..

TIM Z

iTrader: (12)

Great. It also helps to clean your MAF with contact cleaner,

Check and make sure your fuel pressure is doing what it should be, and if you have a **** ton of miles new O2 sensors could be in order.

But sounds like your golden now.

AKlowriderZ71

iTrader: (22)

Interesting. I don't really see how changing the plugs & wires will fix a running lean condition, or MAF codes. But, glad it's working out for you.

My guess is that it's an intermittent MAF failure, and it will rear its ugly head to you again later.

Sc00by

Good to know it seems to be fixed. But even though its running good if you haven't changed your fuel filter in 10k-15k your definatly due. Mine seems to run so much smoother when a fresh filter is in place.