[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] re: coolant woes
Luke, I have just completed a timing belt change on my '90 90Q. While my engine is different (5cyl 200v) I believe the cooling systems are probably similar. Anyway, did you open the little valve on the heater hose where it goes into the firewall? You must open this when filling the system. If the bleeder is not there, unhook one of the hoses from the firewall. I had to start the car before I could get fluid to come out. Once the fluid came out, I just closed the valve (or reconnect the hose). Sounds like you had air in the system, this should help. Good luck, Dave Kase '90 90Q<<<71k, timing belt was shot! you wrote: Somebody may have btdt and be able to help me out. The vehicle in question is an 88 4cyl 80. Recently I ran some Prestone radiator cleaner thru the car as the previous owners had sadly neglected the poor old girl. I adhered closely to the instructions and ran the car for about 6 hours with it in. I then drained the cooling system totally and added pure water as per the instructions for 4 hours. I then refilled the system with water and anti-freeze and went on my merry way. Today (1 week later) the car overheated on the way up the road (2 km approx) 110 C Flashing light etc etc. I let the car cool for a while then drove home slowly. I turned the heater on to facilitate cooling and no heat came out. But yes there was still water in the system, in fact it was nearly full. When I got home I looked under the hood, all appeared normal except the bottom radiator hose was stone cold. I Let the car cool then started it up again and everything functioned as advertised. However when I returned from my test drive a nice little geyser was erupting from the expansion tank. I have several theories. 1. Flushing removed so much s**t from the system that it all collected to block the thermostat which is conveniently placed at the lowest point in the system. And a coincedental failure of the coolant resevoir cap 2. The combination temperature sensor had magically failed and set off the light and gave a high gauge reading, it then repaired itself when I got home (but the fuel injection was working fine) and the car hadn't actually warmed up enough to open the thermostat (it is summer here) 3. Water pump has s**t itself and is only just providing enough flow to cool the engine. 4. Head gasket has gone (please god don't let this be it) Any ideas TIA Luke
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