So i received my new Mass air flow sensor today, Installed it and i am having the same problem as before...

My car will start fine, run fine. But if i give it any gas it will stall, OR when underload it will stutter and hesitate. Almost like a jerking sensation. Like some one is pressing and releasing the gas pedal over and over.

The car will run with out the MAF but i only get 2 mpg which is not acceptable.


I have 2 days if that to get this done and fixed for a long road trip, I cant and dont have the time or money to take this into a garage, PLEASE help

 

are you gettin any codes? Link me to your last thread

 

I think it is your fuel pump ECU. by pass it with a relay

 

Try cleaning the TPS connections. I recently was slugging around because of it. just an idea.

 

I have no idea how to bypass anything, Tell me and ill give it a shot


My mothers wedding is in 72 hours, im desperate ill try anything


Teach me Oh lexus gods

 

How do i check for codes?

 

If it's a 96 or older just connect an obd2 reader to the obd2 connector. If you dont have a reader take it to a parts store like kragen/checkers or Autozone they usually will do a scan for free and tell you the code number.

 

You seem misinformed - perhaps you meant "newer" instead of "older."

If it is 92-95 then it is an OBDI. You will have to do the diagnostic check yourself. Basically, get a paperclip and bend it into a U shape. Find the diagnostic port under your hood (little black box that says "Diagnostics" on it) and put one side in TE1 and the other side in E1. Then turn your key on (don't start car) and count the flashes of the CEL (check engine light.) If it doesn't flash you don't have a code. It is does flash, then count the number of flashes, then there will be a pause, then another set of flashes. The first set is for units of ten (eg 3 flashes =30) and the second set of flashes represent singles (eg 5 flashes = 5.) So if you get flash, flash, pause, flash, flash flash that would = 23.

If you have a 96+ then bring it to Autozone and get them to scan with an OBDII reader.

Jonny

 

Oops! I meant newer.

 

Its coming up with


2431

blink blink pause blink blink blink blink pause blink blink blink pause blink

 

So i looked them up and 2431 looks to be

24 = IAT Sensor Signal

31 = Air Flow Meter Signal



I bought this Air flow sensor from CyBoRg who garenteed me that it was a working sensor, i understand people lie, but i spent 110$ on a non working part from what my car is saying... wtf


The one thing that is confusing to me is my old MAF did the exact same thing as this one is doing, that could mean 2 things, they were both bad or there is something wrong with my ECU/wiring

I have people telling me my car shoulding even run with this thing unpluged is that true? please help =(

 

When my car sc300 is running and I disconnect the IAC, the idel shoots upm, but the car stays running

I don't see any mention if you reset the ecu after the maf swap.
What happens when you disconnect the battery for an hour. Then start the car?

good luck

 

How long have you disconnected the battery for?

Jonny

 

Also you might want to try playing with the TPS

 

Ok i let the battery sit for 30 min, and plugged it back in and still the same problem

How to i check the TPS to see if its right?