Timing belt pulley bolt won't come off!, Help please :-) Options

[wilc4]

I have a 1996 Celica GTS Convertible with a 2.2. I need to replace the water pump and to do that need to remove the timing belt (arrgh!!!). I got it to to TDC and have good access to the 3/4" bolt and am using an impact wrench but still cannot get the bolt to come off. My impact wrench just goes and goes and my concern is that it is actually starting to round the bolt.

Any suggestions on how to get this thing off?

Thanks!

Wil

[95CelicaST]

x2

Or if the motor won't start or is out of the car I found that lots of PB Blaster and the use of a propane torch (obviously not at the same time) works well.

[wilc4]

x2

Or if the motor won't start or is out of the car I found that lots of PB Blaster and the use of a propane torch (obviously not at the same time) works well.

Not to be naive (LOL) but what is PB Blaster?

I got everything apart (and the batter is also dead) so starting it is not an easy option...however, it is helpful to note that it is probably a 19mm, which will give me a little snugger fit, since I have been using a 3/4". Should at least prevent any more rounding to the bolt.

Not sure what my impact gun is rated for, but I will check on that, too.

Thanks for all the good suggestions, at least gets me going in the right direction, I hope!