Hobstar82

Hi all. I have a 1999 impreza turbo 2000. Recently it has started to hesitate intermitantly, when under full throttle (more so when cold). I have done a fault code check and there were no codes. I have had a brief inspection under the bonnet and cant see anything disconnected or rubbed thru. Has anyone else had this problem and know what it might be or does anyone have any suggestions other then a gallon of petrol and a match!!!

Cheers

Mrchips

iTrader: (7)

Might be over boosting, as the boost solinoid might just need a clean with some carb cleaner, see if this works. All it is, is some oil gets in the pipes.
Other then that check any pipes arent kinked.

STI_Baly

iTrader: (23)

Please note the car shouldn't overboost as standard - unless it's missing the restrictor pill. Please search for 'restrictor pill' on here to learn more.

TonyBurns

iTrader: (3)

Were you in 2nd gear by perchance?

Tony

stigaz

I get the same kind of thing with my car, where is the boost solenoid, and restricter pill? and what about second gear?

JAMSCOOB

i posted this a while ago i get this mainly when cold it does it a few times then clears apparently its quite common and no definite answer has been found

nixxon

Why are you giving it full throttle when the engine is cold?

TonyBurns

iTrader: (3)

Ah i was wondering if someone would reply to my question

On MY99/00 model years, they have a setting for emissions, if you hold second gear too long it knocks into this mode so you can pass the emissions test, its like hesitation but actually a part of the ecu program

Tony

version2sti

Keep doing this I`m sorry you will have more than slight miss fire!

DYK

**** me m8 the fact that your running on full boost with a cold engine is not helping in any way..I would stop doing this for a start otherwise you will need them matches and a gallon of petrol pritty soon.Keep off the boost until the engine/oil is warm and up to temprature,otherwise youll **** your pistons up and whole number of things.

JAMSCOOB

"Why are you giving it full throttle when the engine is cold"

sorry i didnt mean when cold i meant the first time i come on boost when fully warmed up it does it then when i hit 3k a couple more times it clears

sy.

iTrader: (8)

"if you hold second gear too long it knocks into this mode so you can pass the emissions test"
what??? what emissions test do you need to pass in second gear?? this sounds like some bull***t fed to you by a so called specialist/dealer to the no real answer to 99-00 hesitation

sy.

iTrader: (8)

for the record i have a my00 car (2 inc my cousins car) and both suffered the hesitation stuff both mine and my cousins were resolved when the cars were ecutek remapped

TonyBurns

iTrader: (3)

Well in the 9 years i have been on this board and the fact i am now on my 3rd subaru in that time....
Its actually a true statement.
Having owned an MY00 from new to dec 03, it too suffered minor hesitation, it also suffered the 2nd gear emissions test mode, then i had her ppp'd and that cured the hesitation

Tony

powerwrx

iTrader: (11)

check your coil packs, i had hestiation on my old classic when giving it some..i took the coils out and found 3 of them were cracked..replaced all 4 and all was well

adman73

I too have a MY00 and can confirm there is some sort of boost restriction in 2nd gear.

RedScoob

Is it like a very small "hiccup"? Or a really violent termination of power?
Small hiccup could be just plugs (mine is doing it at the moment, I read somewhere that extra compression caused on high boost blows the spark out if they're worn???), if it's really violent it's probably fuel cut due to overboost. Either that or what Tony Says....

sy.

iTrader: (8)

so what the point of it ?? and does this affect just ae802 or 801/800

Jolly Green Monster

iTrader: (4)

drive by noise test..

Simon