then edit your posts not post after post! haha jk harv

 

I didn't do anything to the MAF. Somedays the car runs GREAT with no problems. But, it seems when the car gets to about 1/2 tank of gas, the car starts having the problem. I know just keep a full tank of gas in it and it'S fixed. I NEED HELP.

 

AHHHHHHHHHHHHHHHH! Another piece of the puzzle.... Might have something restricting the fuel pick-up...when it's down past 1/2 tank, have the fuel pressure tested. Could also be the fuel pump, but I doubt it if it does ok with a full tank...

But I would highly recommend cleaning the MAF also. With almost 100k, it probably needs it. BE CAREFUL when you do it. Use either alcohol(NOT THE DISTILLERY KIND) or carb cleaner with a Q-Tip. CAREFULLY clean the wire. If you break it, you just bought a new one.

 

Would the OBDII pickup the codes for O2 sensor. I'm going to buy a fuel pressure gauge tomorrow.
thanks

 

FUEL PRESSURE TEST AT IDLE!!!! That will tell you a LOT

 

Not necessarily if they are boarderline. Depends on the circumstances.

 

soemthing is definately up with the fuel system if it only happens with low fuel...i BET the fuel pressure test will show you. Its probably the fuel pump. The filter only cleans the fuel out...nothing more, no pushing or anything...the injectors may be a culprit too as they "shoot" it into the engine...but it sounds like the FUEL PUMP. If it doesn't pump it out well.....or bc fuel is low it needs to pump harder...that sounds like your issue...

 

I agree. I'm leaning on the pump itself, or the screen maybe getting clogged..restricting the pick-up. If it does turn out to be the pump, change the screen too!

 

Thanks, I'll test it out. how much is a fuel pump.

 

Exactly Harvey.

Sometimes the screen does get cruddy after a while...but while you are at it....its WAY better to completely swap the pump to have it all new as they are not expensive at all.

Hell my Fuel Pump is Walbro 255 and it was $125 I think