Hello, I've been having an acceleration problem with my SE, it feels like is running out of gas at full throttle, other than that it runs great, the problem only shows at full throttle. Does any one has an Idea on where should I be looking at. Thank you.

 

You 5th and 6th port actuators may be stuck closed.

When was the last time you changed the fuel filter?

There is a small cone shaped screen at the fuel pump that could be clogged also.

What condition are your spark plugs/ rotor / cap / wires?

 

You may be on to something with the actuators, I got this engine from another car and the actuator are fix to stay on 1 position, the assembly is disconnected from it, will look in to this, thank you for your immediate input.

 

They may be wired open. (a common mod) That would not hurt your top end. Check the other things.

 

You may laugh, but this was the cause when I had the same symptoms last almost a year ago.

Remove the air filter and see if the rubber around the filter melted. For some reason my did (and my current one is doing the same thing.) It was so bad that I had what appeared to be black tar in the airbox AND inside the AFM where the flapper door is. The "tar" was preventing the door to open and close freeely. Once I cleaned all of that "tar" out right up to the TB, the problem went away and the car ran fine at FOT

 

Did this come on all of a sudden or was it after you did some repairs?

Test and reset the TPS per the FSM.

 

in my experience the fuel system is a little undersized, or has less margin than something like an FC.

fuel filter(s) are key, especially if they are aftermarket. there is a filter in the tank too

also plug wires are important.

next thing might be a clogged exhaust/air filter

 

I have to correct you on your statement regarding that the fuel system is a little undersized. This is very inaccurate information.

The Se Fuel feed line is 7/16, the SE fuel pump has more volume output than the TII 2nd gen models.

I have never had a fuel filter from a FI car plug. This can only happen if you had a lot of rust in the tank and it starting feeding into the filter. This would also apply in regards to the screen filter in the tank and or if the original screen is still in the hose at the pump.

Like I stated before the TPS can cause this issue also. When you are accelerating moderate to hard is their a slight misfire and or lag in acceleration then it picks up?

The exhaust is a factor if you still have the Catalytic converters on there.

Could be running on 1 injector. Check you fusible links. There are some other things that may cause this issue also.

 

1. i have seen several "dirty enough to loose some power" fuel filters, and one that internally fell apart. that car would run great when first fired up, and then gradually loose power as you drove it, until it barely ran. the aftermarket fuel filter fixed it, tank is fine.

2. ok maybe the fuel system is large, but the ecu duty cycle is not. my last gsl-se was making enough power to run out of fuel up top. i had an open exhaust and an FC block in that car, with a stock engine it was fine. but you still do not have a lot of margin before a clogged filter (there are 3!) will make itself known, only time it wont is when the double throttle thing doesnt open

 

I just pick up an gsl-se and im having the same issues were can i find pics for the 5th and 6 actuator and how can i wire the open??

 

Copy and paste the link to the FSM's and down load a copy of your year, all of the information is in there.

As far as wiring them open you just depress the actuators by hand and wire them in that position.

 

clean out the entire system, fuel tank all the way to the injectors

 

Hello every one and thank you for your inputs, sorry I have not reply, I haven't have a chance to do anything with the car, I will check all of the above suggestion and will post the source of the problem when corrected. Thank you!!