SKYLINE WON'T drive normally

[Jonic]

SKYLINE WON'T drive normally

So after thrashing it down the road, my car went into a LIMP mode, now when I drive, it won't go over 2000rpm, even when parked I can't rev it pass 2000, it's like hitting a rev Limiter. So I suspected the AFM, spark plugs and Coils so, I cleaned the AFM (sprayed it down) and replace all my coils and spark plugs. Car starts up great but the problem is still there, what could it be? 

I have reset my ECU already.

Before the limp mode starts, the car will drive fine till about down 3mins after it will just LIMP MODE the whole way, once I start my car again it will be normal for abit and then again LIMP

My Skyline is R34 Triptronic.

My engine light has always been on before this occur so I can't tell if another problem popped up so I have to check on that. 

I think also my A/T flashes before I start my car

IMG_2500.MOV

[GTSBoy]

The sure fire easiest way for you to find out which of the bazillion things this could be would be to put a scan tool on it.  Otherwise you're gunna have to pull the codes out of the ECU manually, which is not as much fun.

[89CAL]

You cleaned the AFM, but did you check for dry solder Joints? Do a search on here and try that. Essentially free and could solve your problem

[ADDSKI]

If your Mass Airflow sensor is broken the car won't exceed 2000rpm

[Jonic]

If your Mass Airflow sensor is broken the car won't exceed 2000rpm

This thing is when I start the car it will drive normal and goes over 2000rpm but after about 3 mins or so it will just start to choke and chug and can't even drive over 40kms

[blind_elk]

On 02/12/2016 at 7:58 PM, Jonic said:

My engine light has always been on before this occur so I can't tell if another problem popped up so I have to check on that. 

It was on for a reason - there's something wrong. **Sigh**

So God only knows what might have broken to cause your current situation. (but I'll back the AFM as the chief culprit)

[WMDC35]

When it's playing up unplug the AFM & see if anything changes

[Jonic]

It's not the AFM, I tried unplugging it and it died, tried starting her up without the AFM And it starts, tried plugging in while the car was running and it adjusted itself and idle perfectly

[Jonic]

Car runs fine now and I didn't do anything really, just reset the code and I can finally drive it pass 2000rpm. Problem now is when I'm driving, at a red light my idle drops and sometimes the car dies, but starts right back up no problem. Any clues because my mechanics are clueless. The cel code was A/T and ABS fault but that has nothing to do with my current problem zz

[niZmO_Man]

AAC (or IAC, whatever they're called), the idle air valve.

[Trex]

sounds like AFM to me... 

[Jonic]

Coolant temp sensor

[Anfanee]

Do you really need 3 threads for this?

[Trex]

2 hours ago, Jonic said:

Coolant temp sensor

no it wasn't haha.