2001zz

O.k. i just finished the install on my 98 a4 with a 4400 stall.
I have a question It seems to want to overheat and its only about 35 degrees here. I will be getting a tune this sunday butim afraid it will overheat n the drive there. IT seems to help a little when i turn the ac on? any ideas
this cam sounds bad ***.
IT wants to die if i rev it or come to a stop. I havent drilled the throttle body yet should I? if so how much, i dont want to mess it up where it cant be tuned

Scalpel

iTrader: (4)

You need to bleed your coolant. Follow the steps on http://www.ls1howto.com to fix it.

DanZ28

iTrader: (5)

Ditto that!

Fast SS on TNT

iTrader: (1)

And me makes three! You probley have air bubbles in the system. Give it a good burp.

goober35

iTrader: (1)

You can pull the tube off the top of the water pump and put a tube down there and fill it that way. You should be able to fill it all the away and when you start the car it will only need 2-4 cups of water if you have primed the block(the way i told you) and primed the radiator.sp

2001zz

so this is why it overheated. I looked on ls1howto and couldnt find how to do it.

goober35

iTrader: (1)

Do what i posted and you will be fine. Also You can take the intake off ( be carful not to break the oil presure sending unit) take the coolant plug out and start filling the radeator.

2001zz

man i just put a new intake on and dont want to have to take it off. Is there not anyway to bleed the system? I already have the coolant in the car.

Mike K.

Can't you also pull the small hose that goes from the coolant line by the intake to the TB and fill it until coolant comes out there? I have done this a few times and have had no bubbles this way.

2001zz

my question is i have done the throttle body bypass can i just take the cap off where the hse use to be? I mean i already have the thing filled with antifreeze anyway to ge tthe air out without draining it all?

Mike K.

If it was me I would probably drain the coolant into a clean bucket, remove the hose and then refill it. This should do the trick. I had to do it as well with the TB bypass and I just let it drip out of the coolant hole by the intake, I have always done it after it was empty though. You could always try it your way and if it does not work then drain it.

goober35

iTrader: (1)

Pull the top hose off of the water pump. Prime block, put hose back on, prime radeator, start car put water in as needed, watch temp guage, turn car off after up to temp and jack front of car up and leave that way over night all bubles should make there way to the front. Add water if neededr, take test drive, let cool off , check level, add if needed. Should be good to go by now. Do Not Take Test Drive At Night if open headers.

Jason99T/A

iTrader: (21)

The easiest way I have found to fill the coolant system is the method mentioned above. Pull the hose off that connects the TB (in stock trim) or the radiator (TB bypass mod) to the coolant crossover tube on the intake manifold. Fill the radiator until you get a nice, steady stream of coolant coming from the crossover pipe. Then, install the hose back onto the pipe. Start the car up with the radiator cap off and let it run until the it reaches full operating temp. Fill as needed. Finally, install radiator cap and check the coolant level for the day or so while everything fully settles.

Jason

Josh

iTrader: (9)

Does this happen everytime the coolant is drained and refilled? I just installed my T-ReX last week and haven't had any overheating problems, but it sounds like this should be a standard procedure when refilling the coolant.

Thanks,
Josh

Scalpel

iTrader: (4)

Yes, Jason99T/A's procedure is needed to be followed anytime the coolant is drained and refilled.

Pro Stock John

iTrader: (34)

Why not just:

-take off cap when cold
-top up
-run car for 15 minutes
-top up as needed waiting for the t-stat open

Why does that approach not work, it's worked for us.

x phantom x

iTrader: (14)

.
That's how I have done it countless times ... and I have never ran into a problem with it?
(Not saying that is the correct way, but it seems to work fine)
.

35th SS

iTrader: (2)

I did mine this way like PSJ mentioned.no problem here.

PongoX11

iTrader: (15)

I did it the same way as PSJ. Filled it, pumped the big hose a big to help it push the coolant. Topped it off, caped it, drove it and refilled. Checked it again the next day, filled a little drove and filled a little. No probs

ta12sec

iTrader: (3)

or just get an airl lift and save the time and headache
http://www.johnsonmfg.com/temp/j360cs.htm