acceleration problem

[Guest reatta_ross]

Well i'm not totally sure what is going on, but, when i was getting on the on-ramp today i put it to the floor and it would not accelerate. It wasn't sputtering or anything, it just simply would not go faster. Now when i left off the pedal about half way it started to go. this only seems to happen when i'm down to a quarter tank of gas. Coincidence?, or maybe that has something to do with it. not sure but any help would be awesome. thanks!

[DAVES89]

Fuel filter, fuel pump going bad, or catalytic converter

[Guest reatta_ross]

The exhaust is fairly new. Got my dual flowmaster set up delivered yesterday, plan to install this weekend. I hope it is the cat so i don't have to spend more money. Also just changed the fuel filter 3 weeks ago. Was also thinking it could be the pump but i never know with this thing.

[Guest Corvanti]

with a fuel pump pressure tester like this: Reviews for Actron CP7818 Fuel Pressure Tester Kit

check this tutorial: Fuel Pressure Testing - Reatta Owners Journal

hope this helps.

[Guest Mc_Reatta]

Wouldn't hurt to monitor ED18 O2 Cross Counts to see if O2 sensor isn't driving it lean or rich.

[padgett]

If it is running smooth just no power my bet would be massive retard. What is Oldpa3 and the advance doing ? Lean will surge & rich will produce black smoke out the pipe.

[Guest reatta_ross]

Padgett there is no black smoke and you lost me at Oldpa3 and advance. Pretty new with this car so if you can feel free to fill me in.

[Guest reatta_ross]

Wouldn't hurt to monitor ED18 O2 Cross Counts to see if O2 sensor isn't driving it lean or rich.

Recently installed a cold air intake but it was doing this before, then after installation i filled the tank for the first time and didn't do it again until i had a quarter tank. I think i'm really leaning toward the fuel pump.

[Ronnie]

You really should buy, borrow or rent a fuel pressure tester and check the fuel pressure. It's an easy 15 minute test that will tell you if you need a fuel pump.

Filling the tank is probably just a coincidence.