When I drive my FC, when I drive it normal it does perfectly fine, but when I step on it and it starts climbing to higher Rpms, it seems like it reaches a rev limiter and starts kind of jumping, like as if it is struggling to climb higher.
What can it be?
:/

 

fuel cut by OEM spec rev limiter

 

How can I fix it?

 

Stand alone ECU, a set of 750 injectors, and a nice rewired fuel pump.
How high were you revving btw? I never asked.

If you were red lining, then it's the OEM fuel cut, if not then you have a problem

 

But the thing is, it barely started doing it...-

 

what do you mean

 

I used to be able to push it and it wouldn't do it, and one day I tried and it started doing it.

 

I would rev probably 5k rpm

 

how high were you revving?

 

4-5

 

you are very unclear, did the engine stop revving at 5k or what? it matters where you the rev limit is hit.

if it's around 3800 rpm, then you have a very common hesitation problem among FC3S.

 

i assume you have a n/a your ports are not opening up. or your secondary injectors,

 

I hit between 4-5 rpm and it starts sounding like if it's stuck, and it won't reach any higher rpm's and it kind of starts jumping like it wants to rev higher, but before I used to be able to rev it up higher freely and without a problem.

 

It is an N/A, I had the problem before and I ziptied the ports and it fixed it. I checked them again but they seem fine.

 

sounds like you have a N/A, then like what above said. Injector not firing, ports not opening.

 

pull out the FSM and test/check the ports. i would start there and then move to the seconday injector checks.

 

Quick question, do they have to be ziptied to where they are holding it down or pulling up theport pin.
sorry, I'm a newb.

 

So which way does the aux port open, when the actuator is up or down?

 

When the rod is down the ports are open, up is closed

 

you start with the basics. fuel filter? recent? or original to the car? spark plug wires? you can check these with an Ohm meter, they MUST be under 16k Ohms/meter (they are a meter long, so 16K ohms). bad spark plug wires will cause high rpm misfires.

 

^ mine did this. I fixed it by rewiring the fuel pump and changing the sock. yes it was a n/a

 

How much would it cost to rewire a fuel pump, because I don't want to mess with it myself.
I re opened the ports ad it helped a little bit, but when I peg the gas it does it, I slowly have to ease it up there.

 

Do the easy stuff first, Make sure you have good Fuel pressure, Also hook it up to a scope find out if the injectors or spark is lost..

 

then leave this forum, and hire someone, and quit wasting our time with guessing and bullshit. waste of a read, and i was going to help.

 

It's kind of hard when I don't get full on instructions, and I don't want to end up with a non-op vehicle in my hand and completely **** it up.
I'll risk it and do it myself, but I have no real instruction on how to do it.