R34 Stalls when accelerating.

[rahilp]

Hi there

So I've seem to have this problem with my R34 GTT. 

Firstly the issue
The car seems to idle fine. However when it's cold and I accelerate (floor it) the car drops its revs drastically then shoots up. If I accelerate slowly (even tapping the pedal) the car will stall. 

When the car is warm it stalls alot easier.

Suspected the alternator but tested 14.6volts
Cleaned the MAF

The car is a R34 GT-T manual with stock ecu with a forward facing plenum.

If you have any ideas please throw them at me

 

Video below does show the temp being high, at the time my thermo fans weren't plugged in 

 

[Kinkstaah]

So uh, what's your IACV doing? Given the OEM one is connected to the back of the OEM intake manifold.

[rahilp]

5 hours ago, Kinkstaah said:

So uh, what's your IACV doing? Given the OEM one is connected to the back of the OEM intake manifold.

So I have a greddy manifold, it's underneath, I gave it a decent clean a year ago

[Murray_Calavera]

Checked for vacuum leaks?

[joshuaho96]

8 hours ago, rahilp said:

Hi there

So I've seem to have this problem with my R34 GTT. 

Firstly the issue
The car seems to idle fine. However when it's cold and I accelerate (floor it) the car drops its revs drastically then shoots up. If I accelerate slowly (even tapping the pedal) the car will stall. 

When the car is warm it stalls alot easier.

Suspected the alternator but tested 14.6volts
Cleaned the MAF

The car is a R34 GT-T manual with stock ecu with a forward facing plenum.

If you have any ideas please throw them at me

 

Video below does show the temp being high, at the time my thermo fans weren't plugged in 

 

This needs ECU logs badly. Most likely what's happening is a lean misfire followed by fueling catching up.

[GoHashiriya]

I replaced the fuel pump and had this issue before, just whacked the stock one back in - as it wasn't the problem I was trying to fix - and no longer had the problem.

Why is your water temp gauge so high?