Within ten minutes of driving my car is overheating and seems to be leaking out of the cap and it's a new cap. All other hoses are fine. Suggestions on what the problem may be? Do I need a new radiator? Please help

 

Not really an 'Advanced Tech' topic. Let's move this to LT1 Based Engine Tech.

 

Define "overheating".... what temp is the dash gauge indicating?

Have you verified that the fans are running - 1st fan (or low speed) at 226*F, 2nd fan (or high speed - depends on whether you have an "early" or "late" 94) at 235*F?

Is the SES light on?

Is the low coolant light on?

 

I didn't mean to place it in the advanced tech section. Sorry. It reads at 226 and then I turn the car off. No indicator lights come on at all. I'm at a loss. And yes my fans work.

 

Why do you consider 226*F "overheating"? 226* would be a bit more than 1/2-way between the 210* mark and the 3/4 hash mark. What would happen if you didn't shut it down? Does the fan come on and cool it down?

 

Assuming you have programming to support your cam listed in your sig, did the programmer change fan operation at all? Are you running a 160-degree thermostat? All things aside, STOCK fans don't even come on until 227 degrees (low speed) and 235 degrees (for the high speed).

 

for the leaking , is the overflow connected? is it leaking from the neck? can you find the leak?

 

The temperature keeps climbing and by the time I turn it off half my coolant is gone and what's left inside is boiling. I let it sit once to see if my fans would come on and they did but it didn't help. My temp gauge kept going.

Yes I have a 160 thermostat. I was actually on my way to get a dyne tune when all this started happening so I don't have a tune for it yet.

The leak, yes everything is connected. It's not the neck. It really looks like its all around the cap. All the hoses are ok, new cap, i don't know what's wrong. Should I try and pressurize it and see what happens?

If I do pressurize it, find no leak and I still have this problem should I just get a new radiator?

 

So I pressurized it and the is a very small crack in the sidewall of the radiator. I'm getting a new one.

Thank you for your help