Thread: Car wont rev: only sometimes

So this problem started happening a week or so ago and happens now almost everytime i go to drive it. After about 5-10 mins I will try to start off in first gear and it will just rev from about 1000 to 1500 rpms even if it is full throttle. I turn the car off then back on and then its perfectly fine like nothing happened. I am running a bluebird with a top mount and i know its not heat soak because I turn it off then back on and its fine. It is not throwing a code or anything but its definitely getting annoying since its my daily. And also today on the freeway home from work i was on the offramp at 4000 in third and all of the sudden no power and the rpms kept dropping no matter how much throttle i gave it and when i turned it off and back on it was fine. Other than this is runs really smooth and pulls through all gears. Could my ecu be going bad? or maybe tps? Thanks guys.

Bump

What type of ecu? I know when my calum basic chips started going bad this started happening a lot. And I couldn't pull codes from the. Ecu using data scan when this happend it would say no ecu detected. But then when I turned it off then back on it was fine an I could read the ecu but there was no codes..

Same ecu but with a nistune board its been fine for 6+ months

Its a u12 bluebird ecu. So maybe because its not throwing any codes it could be the ecu's fault?

Well my isue had to do with the calum chips but I suppose its possible.. Or it could be the maf but its hard to say. Without bein there lol

I just dont see why turning it off then back on makes it fine again

ya thats really strange.. try using datascan to pull codes while the problems happening and see what it says.

MAF

i have an oem 93 nx ecu if you need one.pm me

Ok look i had the similar problem but i have stock SR20. And my problem was my ignition coil. They sometimes go bad so try your ignition coil. And your MAF as well. Good luck.