Rb25: Sudden Illness

[Bitsushiti]

Hi all,

Tonight I was driving my 1996 gtst, with fmic, 3" exhaust, Bosch 040 fuel pump, stock turbo, stock ecu, 10psi... and as I was turning into a corner and feathering the throttle back on softly, the engine hesitated (exactly the same as it did back when the AFM was playing up, like a complete throw-you-over-the-steering-wheel cut-out in gear hesitation) before dying completely. On starting it up again, it hunts around very roughly at idle, won't allow revs over 2krpm and as soon as I put load on it in 1st gear, the engine dies. If I hold the throttle at 20%, it hunts around as it does at idle but intermittently revs up (like a quick to-the-floor depress on the throttle every five seconds) even though the throttle position hasn't changed.

Luckily I was only a couple of hundred meters around the corner from my house so I could limp it home with persistent revving + quick soft blips with the clutch to keep it rolling...

Although my suspicion lies with the AFM (which had given me grief a couple of months but was fixed by re-soldering the plug), I was wondering if anyone might have had a similar problem or might know what would suddenly cause this?

Thanks in advance

[Guilt-Toy]

did a cooler pipe come off?

[Bitsushiti]

It's 4am and it's freezing cold outside, but it won't annoy my neighbors to have look. Thanks for the heads-up Guilt-Toy, this hadn't occurred to me. I will report back shortly

[Bitsushiti]

Yep, cooler pipe on intake side had popped out completely. Cheers mate, I appreciate it.

Now commencing: feeling like a dickhead

[soturi]

don't feel bad....forums are here for a reason! Imagine if you went to a shop....$_$

[paulR32gtr]

I think the first time it happens to anyone you shit yourself - aw god what have I broken.

[Muff]

agree. i did the same thing. lucky u didnt buy a new afm before you checked pipes......

ahhhh looking back its pretty funny

[PROXIMITY]

don't feel bad....forums are here for a reason! Imagine if you went to a shop....$_$

amen that lol

[3LGODZILA]

happend to me when i 1st put my highflow on, 18psi was a lil too much for the standard crappy hose clamps lol.

and it just happend to do it when it was raining at night time, but for some lucky ass reason i had a few tools in the car and it was close to home

[Guilt-Toy]

first time i tuned my car on 30psi, everything was fine on dyno...

took it to the street and was boosting in third gear, cooler pipe come off.. it was soo violent i thought i destroyed the engine lol

it serously felt like something left the engine bay and went under the car, like engine parts etc etc i was very happy to see the cooler pipe off when i went to inspect the damage

Do not worry about it, its a common thing. Here in Georgia I see all kinds of dodgy cooler piping that break and leak which can make tuning a nightmare at times