DanaliHD

iTrader: (5)

Ok, I need to know what codes I should delete to pass inspection in NH. I have been throwing some MAF codes lately so i put it into SP mode. I am showing P0102 and P0103 right now. How do I make sure I am getting no codes when I get there next week? I use HPtuners

ace68

iTrader: (15)

I know that when you run SD you need to set p0102 & p0103 to no mil but I don't think a SD tune will pass inspection.

DanaliHD

iTrader: (5)

I was told NH doesn't actually measure emissions, they just check for codes? true?

Slowhawk

iTrader: (12)

Thats right,if the truck get';s the OBD2 plug in test it will fail with those codes and it will fail if you delete the codes because the system will show a fail safe.

GM Muscle

iTrader: (9)

The whole OBD-II testing set up is still so fucked up in this state that most small shops aren't even using them. All the state is using them for right now is to keep track of sticker numbers. You obviously want to take care of the code but I would still try and find a shop that's not bothering with the OBD-II test. Also, shops that do less than 200 stickers a year aren't legally required to test. Alot of detail shops around here do inspections but probrably don't have to do the test since they are low volume.

RDISADEIFAN

Thats good too know, I though everyone had to test obdII. The place I go to the state inspect jumped up $25 from the previous year. I miss the good old days ,I had a friend in mass get my emissions off the towns police cruiser.Ahh the 80s were good times.

DanaliHD

iTrader: (5)

hmmm, so how do i get around this? i can't figure out why i keep getting a P0102 with the maf plugged in.

JL ws-6

iTrader: (50)

Is the maf dirty?

DanaliHD

iTrader: (5)

No, I did recently have some audio work done to the truck. When I got it back is when it started acting up. I tried using the MAF out of my buddy's avalanche, same problem. I was told it might be a blown fuse but I've checked all the fuses in the under hood box and they are all intact. I read somewhere that if you cut the wrong wire when reloacting the IAT sensor you will get that code, but, I was also told that the maf and iat won't work. Mine are both working.

JL ws-6

iTrader: (50)

Odd. I'd get it scanned, see what's goign on, probably the only way.

badpewter-z

iTrader: (4)

start with the basics heres a few things from gms book on what can set the code

Inspect for the following conditions:

• A misrouted harness. Inspect the MAF sensor harness in order to ensure that the harness is not routed too closely to the following components:

- The secondary ignition wires or coils

- Any solenoids

- Any relays

- Any motors

• A low minimum air rate may cause this DTC to set during deceleration. Inspect for the following conditions:

- A plugged intake air duct or a dirty air filter element

- Any objects blocking the air inlet screen of the MAF sensor

- Any throttle bore or throttle plate coking

• A wide open throttle (WOT) acceleration from a stop should cause the mass air flow display on a scan tool to increase from about 4-7 gm/s at idle to about 100 gm/s or more at the time of the 1-2 shift. If not, inspect for a restriction.

• Any unmetered air entering the engine may cause this DTC to set. Inspect for vacuum leaks in the following components:

- The intake manifold

- The throttle body

- The exhaust gas recirculator (EGR) valve flange and pipe

- The MAF sensor seal

- The maifold absolute pressure (MAP) sensor seal

- The EVAP canister purge valve seal

- The EVAP canister purge valve seal

- The fuel meter body seal

- The brake booster system

- The air induction system

- The crankcase ventilation system

DanaliHD

iTrader: (5)

holy crap. lol. that's alot of info. I'll play with it tomorrow. I have nothing else to do all day.

DanaliHD

iTrader: (5)

I'm told they won't fail me even if i have a code. They will just let me know that i have a code and give me my sticker anyway. We'll see.

ace68

iTrader: (15)

good luck.

what are your maf settings now? stock? how about the fail limmits did you chang them?

DanaliHD

iTrader: (5)

i didn't change a thing. I put a ported tb on, it ran like ***. i had some audio/wiring work done, put the stock tb back on, started getting codes. not sure if the code is due to changing the tb or due to the wiring work or neither, but, the computer settings havent changed.

ace68

iTrader: (15)

does the code come and go or is the MIL on always? did you log any data your using HPtuners right?

DanaliHD

iTrader: (5)

with the maf turned on, i get the code when i give it more than half throttle. SES light comes on. I logged with HPtuners and at 70% throttle the truck fell on it's face and started bucking. maf read 60.xx then 0. looked like this on the graph \/\/\/\/\/\/\//\/\/\/\\/\/\/\/\// lol

ace68

iTrader: (15)

did the maf hit 0 when the tps went 0

JL ws-6

iTrader: (50)

Could your meth injection be messing with the maf?

DanaliHD

iTrader: (5)

no, it reads 1g ish at 0 tps

I don't think the meth could have any effect because it is nowhere near the maf and has never been a problem before.