Having some problems......

[tenaciousdugal30]

Hey guys, I was wondering if i could have some help... Last fall driving back and forth to the cape ('86 Z-28 305 h.o. 5 speed, rochester quadrajet 4bbl) before snowfall, I discovered a crack in my radiator. I wasn't going to be home for a few weeks, so I decided the use the easy fix. I used a tube of alumaseal here, alumaseal there..... Big mistake... Lots of overheating, noisy waterpump... you name it... So I flushed my cooling system... Well, What i thought flushed it... I drained the radiator, filled it with water, and repeated about 3 times. Then ran the car with the hose in the fill cap for about an hour or so, till it was pretty much circulating dasani bottled water, hahaha.... well anyways, I put the car back on the road, and i notice when i sit at lights, She gets up to about 220 or so.... If i let it idle a little long, she'll get about 3/4 of the way up there. One time i let it idle jumping a car and it was in the red. For now i just turn the heat on to vent it off, but when I'm on a decent road, no stop and go, it seems to air cool pretty well. I tested the connection at the electric fan, and it works... I even hear it sometimes when i leave the key on but the engine off... I changed the thermostat, wasnt the problem. I change my oil more than often, and it is never milky or anything. My waterpump makes some noise when i first start the car in the mornings, but no coolant is ever anywhere??? Isnt there a weephole or something? I'm doubting it's a clog, more or less hoping... I'm going to change the waterpump this week probabl, and put in a nice bumpy cam..... I have all the Zexrex shit to flush the system, but if there is a clog, would this work?

[4onFloor]

it might have air in the system, a thermostat wont open from hot vapors. check to make sure your fan is coming on at the right temp, it should kick on at about 220*, when the fan switch wears out the spring gets weak and turns on the fan at a random temps. check your lower radiator hose too see if it's soft or squishy, it could be collapsed on the inside.

[sykotic1]

sooo youre still running the radiator with the ghetto rig? i would make fixing that a top priority, were talking about the stock radiator to begin with plus a mess of problems, thats not good.

[tenaciousdugal30]

I have a new radiator, hoses, thermostat, etc.... About this fan, how would I know when it turns on? Wheres the switch? Like i said, my water pump squeals when its cold, and a little whenever i start it up, almost sounds like a quick belt slipping.....

[sykotic1]

oh my bad, well thats strange then..

[Dober89]

Your car isnt an original 86 5.0L HO is it?? Like it used to be just a normal 305 and you upgraded it or did it come from the factory with the HO??