Yuik87

I have a 2000 T/A with kooks lts and a catted y and its an a4 and i recently

did the free cold air mod about a week ago car was runnin great till today.

I started it up in the morning no problems then as i was leaving work later in t

he day it started to run like it was running out of gas and the fuel gauge was

showin a lil less then 1/8 so i babied it to the closest gas station filled it up

and went to start it and it was idling very poorly at about 400rpms and

surging no power went toput it in a spot and it just didnt want go it stalled 3

times within 20 feet so i thought maybe fuel pump or clogged screen on the

pump. screen was clear so i went under the hood and assumed it must be a

bad sensor so i had it runnin and pulled the maf senor and it ran better and

the i pulled the iat and it smoothd out fairly nice so i tried gettin home and it

just wouldnt let me give it more then 25% throttle without bogging and

backfiring but it made it up to highway speeds and it held 1500rpms no

problem while cruising but just wouldnt accelerate like it should i didnt finds

any vaccum leaks either. If anyone can take the time to read this id

appreciate it and thank you in advance for your time

Yuik87

bump anyone

12345678910

did it throw an ses light

Yuik87

no lights on i replaced the IAT didnt help

ND2RACE

What exactly do you mean "free air mod"? Did you de-screen the MAF? or did you only cut out the bottom of the air box?

Yuik87

bottom of airbox didnt monkey with maf

fbodygirl7931

Could be watered down gas. Or that station was low so it was getting gas from the bottom of the barrel so you got crap in with your gas and clogged something. Try running some octane booster or something through it or lucas through your fuel system. That might help.

Yuik87

i dont think it was a gas issue maybe fuel pressure but i dont have a gauge it was runnin like crap as i got it into the station

ND2RACE

Well you said it yourself, check fuel pressure.

Yuik87

ill try to check tommorow but i dont see how unplugging maf and iat could change fuel pressure in order to make it idle decent but still stumble and backfire on accel

planemech2

I did the free ram 9 yrs ago. Never any problems. As others have said, check the gas.

01ssreda4

iTrader: (96)

Sounds like a failing fuel pump to me. Insufficient volume prevents the motor from having power and running at higher rpms.

BigDB

sounds like a failing pump, check pressure when u can, also check the MAF and see if the 3 wires inside havent been hit and cut, that will fool with a computer. When u unplug the maf the comp defaults to presets thats y u couldnt go over 25% throttle its limp home mode

NW-99SS

iTrader: (6)

+1 for the fuel pump. Mine acted like this the year after I bought the car...glad it was still under warranty! A fuel pressure check will let you know if the pump is weak, which it sounds like it is. I was happy that I could limp mine to the dealership, and your lucky as well...most electric fuel pumps fail altogether leaving you stuck on the side of the road.

BigDB

might want to scan the computer anyway, u coulde have a code and not a light. Light only illuminates when a emission problem occures, other codes will store.