junito1

I tried searching but didnt find any answers.

WHen i start her up she does her normal 2-3000 rpm for a second or 2 and when she comes down to normal idle... she tries to hold but dies out. WHEN COLD ONLY.

I have to help her stay on when shes cold but after 2-3 minutes of helping her out she eventually holds her own idle...


drives,pulls, and idel normal when In normal operating temps.

freemanrx7

Turbo or NA?

S5 or s4?


I've heard the common problem is the sensor near the waterpump.

junito1

It is a 88 TII.

The water neck sensor was brand new on the old motor. I swapped an s5 in and it still does it.

arghx

iTrader: (3)

has the throttlebody been modified at all?

junito1

FUlly modified throttle body besides porting.

And it is the throttle body from the old engine...

I bought an extra throttlebody for my old engine thinking it was the thermowax.. And my uncle said to use the modded one. And he still fixed it. without thermowax

t24todd

iTrader: (7)

wow interesting same symptoms of mine. . . mine dosnt do the 3k start up because of rtek but i still have to keep steady throttle for like you stated 2-3 minutes or she will dye out but after that its kosher. stock ECU? emissions?
stock throttle body on mine
egr is only thing left on
(not thread jacking just eliminating problems by comparing cars)

Magpie57

I have the same problem with my 86 n/a. I read that it might be an air intake temperature senson. Take a peak and maybe we can figure this thing out so we don't have to start our cars 4 times in the morning and tickle the throttle. LOL, Mag

walken

iTrader: (6)

it's the missing thermowax. you'll have to hold the pedal down for a while on cold days when you mod the tb

junito1

IS there any adjustments i can do to stop this? IDle enrichment thingy or something?

Paul Spickard

I also had the same problem but i replaced all emissions controls and now she is fne

arghx

iTrader: (3)

reinstall the factory cold start system you removed from the TB.

Magpie57

Where is the cold start system? How and where is it under the hood? I am sure it 's mounted someplace close to the intake. Right? My VWs had 3 screws on the side of the carb to loosten but this bird has about got me stumped.

walken

iTrader: (6)

the cold start system is on the stock unmodded throttle body

Magpie57

Is there an adjustment or is there something that has to be replaced? On the throttle body that is.

arghx

iTrader: (3)

start searching "thermowax." it is a somewhat complicated system of screws and coolant lines

t24todd

iTrader: (7)

i dont know if they work completly differently but my s4 t2 has to get 2-3min of pedal time but my s4 NA starts up and idles good no pedaling when cold. neither have the cold start assist and both are blocked off...?

Magpie57

Alright, todd DID have to throw a curve ball into the works!

SpooledupRacing

missing thermowax as stated will cause this.. either get use to it or put the thermowax back on.

junito1

Crap.. CAnt be....

My uncle fixed mine. i told him my car wouldnt stay on when cold. WHen i got the car back from him he had somwhat fixed it.

WHen i first got it. The car wouldnt not need any pedal at all. I could crank and walk away.
But after a few months i would have to pedal for like 15 - 30 seconds only.

I remember my uncle saying somehting about the idle enrichment screw thingy. He said as the climate changes i would have to adjust it.??

t24todd

iTrader: (7)

i know of the idle screw to turn up the idle but not a idle enrichment screw. we gotta get to the bottom of this. hate being late or in a rush then cant drive for a couple min because my car has to warm her bones

junito1

for sure...

Its gotta be fixable because i got mine fixed.. SOMEONE is gotta know somehting.

t24todd

iTrader: (7)

looked a couple things up and i do have to agree that its the thermowax thing. engine rebuilt by banzai racing and they used a "thermo pellet plug". so i do not have one you should double check about yours. oh well guess the t2 will never be my daily

Banzai-Racing

iTrader: (11)

The thermo pellet plug has absolutely nothing to do with the thermowax on the throttle body. It also has absolutely nothing to do with the way the car idles when cold. It simply removes the thermo-pellet from the end of the eshaft to allow oil flow at all times.

junito1

Yeah he mixed those up bad.

Ive been messing with the idle adjustments. ANd its geting better. I only have to give it gas when freshly started for about 5 second then she will hold idle... AT around 500rpms till she warms up and idles at 750-900rpms.