Rhyno2050

Hello,
As the title says on my 86 n/a fc, just recently I have changed the radiator and now it is flooded. This is extremely out of the ordinary because my car has been a faithful daily driver for the past 2 and a half years. I have a question about the sensor at the bottom of the radiator, does it control how much fuel goes into the engine and is this why it flooded? I looked around a bit and thought the one that goes attached to the thermostat housing was the one that did this and not the one in the radiator, or do i have these mixed up?

Even though I couldn't get the sensor in the radiator I touched the sensor to the radiator to make sure it got to temp just in case, but that didn't help. Should I just bypass the sensor and join the two cables together?

One last question (just to make sure), I have read in a few cites that when the car gets heavily flooded one must drain the oil because the gasoline has mixed into the oil and thus over saturating the engine of oil and will have trouble starting, so my question is, is this true?

(wat i have tried):
Checked if getting fuel, checked the spark(shocked myself a little so yes), will change spark plugs, have tried deflooding procedure many times, only once achieved starting by push start, have checked compression about 90 on both rotors, battery is still strong, timing seems ok(ran beautifully once it was on, but flooded again)

What should i try next?
If anybody has knowledge on this issue or good suggestions please let me know thank you.

satch

iTrader: (1)

The temp switch at the bottom of the radiator is not your problem. All it does it tell the ECU if it's okay to employ the 3000 rpm high rev which occurs upon a cold start (when coolant temp is above a certain threshold). If you wanted to fool the ECU into thinking that the coolant temp was warm enough to initiate the high rev cold start all you would need to do is jumper the two wires to the temp switch together.

Now if you messed w/the Water Thermosensor then that could cause a flooding problem. This sensor is located at the rear of the water pump. Make sure it is plugged in and you could test the sensor's condition at the ECU w/key to on (pin 2I Green/White wire). It should read 2 to 3 volts w/engine cold and the voltage would drop to .4 volts w/the engine fully warmed.

Rhyno2050

Ok great that is what I thinking about the temp switch, but didn't touch the thermosensor but I am thinking of replacing it just in case. And will jumper the two wires tomorrow

thank you

Rhyno2050

Ok good news and bad,
I joined the wires and made sure all the connectors I would get to were properly together, changed the plugs and the car roared to life. Drove it around for about 45 minutes everything was great, actually probably better than normal.
But in the afternoon went for a drive and for some reason the car over-filled the overflow tank and threw coolant through there. I was having issues with this but I have changed most hoses, radiator, thermostat, but the only thing is the water pump. Will this cause for the coolant to get too hot and over expand??

barkz

iTrader: (1)

have you burped that system?

Rhyno2050

@barkz:
I tried the best I could but do u think it could be an air bubble in the system?

misterstyx69

iTrader: (142)

The whole engine is basically a giant trap for air bubbles!
I bled my system by jacking the front up a bit and running the car,Cap off at thermo neck(S4),getting it warm,til the thermo popped..then shutting down.
Cool off,check coolant.
Did that a couple times and it worked good.

You just can't fill up with coolant and GO with these cars.If there is air it will dislodge and of course spit out coolant.

fc323

doesn't that sound like busted water jacket o rings?

barkz

iTrader: (1)

could be a few things, i just suggested burping as its the easiest to start with and maybe it will fix it. if not hes probably looking at a teardown/rebuild

Rhyno2050

It hoping it is not anything else at the moment, but will burp the system today and hopefully it is not anything else. But if it was the coolant O-rings wouldn't the problem appeared before than just all at once?? And when this problem happened the car has never overheated, or ever showed signs of it.