Fuel Cut Problem!

ok so ive had my 240 for a while now and it was running sorta shitty when i got it so i got a new ecu..ran better but my problem is that i cant go past about 4k rpms in 3rd 4th and 5th gear because itll hit fuel cut like im topping it out but 1st and 2nd pull to redline....is it my speed sensor reading double or sumthing cus thats what touge factory told me. its not my ecu either cus it worked fine in my old 240. if anybody knows or can help please be my guest btw its a KA24e

Does your speedo work? I had my VSS wiring not hooked up on my ka and that was the result. Soon as i wired it back up, it went away. Want a quick fix? Get an AT ecu.

first of all, you don't need to hook up the 5th gear sensor.
than, cut the vss wire after the cluster, so it doesn't go to ecu.
and enjoy your fuel cut free ride.

Here's a proof that it works

Somebody doesn't reset their trip odo.

World Famous D*star wrote:

Does your speedo work? I had my VSS wiring not hooked up on my ka and that was the result. Soon as i wired it back up, it went away. Want a quick fix? Get an AT ecu.

my speedo works sometimes and when it does it only goes to like 55 then it jumps to like 95 and then just gets stuck. its goofy..thanks for the help guys, anybody available to fix it for me? im lazy as shit

hahaa i had the same problem, redline 1 and 2. 3,4,5 cuts off at 4grand, mine just went away one day. I heard a lot of thing that it might be> ecu, injectors, ground, o ring, timing, fuel pump, fuel filter, maf and the list goes on. The way i saw it, is that it kept me from beating on the ka so good luck. o and the whole speedo thing, it has nothing to do with it. My friend has the same thing it reads more than what he is doing and his ka is strong.

Nackers wrote:

Somebody doesn't reset their trip odo.

I do, when I do my oil change, than I wait for it to roll over 3 times.

Jay wrote:

Nackers wrote:

Somebody doesn't reset their trip odo.

I do, when I do my oil change, than I wait for it to roll over 3 times.

Well anyway, I had the same problem. Whenever the digital speedo on my coupe cut out, I couldn't go to redline in 4th or 5th, but when the speedo was working, it had no problems.

Now with my hatchback my analog speedo doesn't work, but I have no problem winding out 4th... I've never tried 5th cause... well to be honest, I'm not sure the hatch will stay together at thoes speeds.

haha yea i wish i could just get some money to get a nice s14 with no mechanical problems... thanks guys