water hose split on my beast the other day. Ive fixed the hose. nice bodge job was performed. Now all manor of problems are occuring. Before this hose went my car's temperature never went out of the blue unless stuck in heavy traffic and then a quick blast of the heaters in my car caused it too shoot back down again. I never saw the temperature go above half way. After fitting the hose on saturday I started the engine to see if it was okay. my fan never came on (even after leaving it for ages - it had worked before but couldnt say whether it was working berore my rad hose went). Took the car for a spin and my temperature rose all the way towards red (unless I put the heaters on and then it dropped down to about half way / 3/4 way) This ride was only a short 10 minute one. I tried pulling out the connector that plugs into a socket near the gear box and joined the connection to put some power through to the fan and the fan didnt come on (a mate told me that this is what you do to test see if the fan is working). I bodged somewires together and wired the fan directly up to the battery and the fan worked fine. Decided to take the car for a spin to test it (take into account the fan is continuosly on now) and the engine temp got to about half way on the gauge. After about 15 more minutes it started to rise and head toward red (it was a really cold nite too last nite) steam started to come out of my engine so I turned my heaters on and the engine cooled down to 3/4 again then to 1/2way, pulled up and checked everything out and couldnt see any leaks. The pressure was extremely high in the overrflow tank though. Also heard an occaisionaly glugging type noise coming from one of the hoses near overflow tank. help people as something in the car is wrong and needs to be sorted out.
right, firstly did you refill it after it had split? i know its a silly question but....
2nd, the glugging sounds like an air lock in the system, i don't know the coolant systems on ther novas, but on the astra's you undo the temp sensor and fill the system till water comes out, then you screw it back in, this is to get rid of trapped air. you could also take the cap of the expansion tank and squeeze the top radiator hose to try and push the air out.
if the pressure is really high in the tank then thats either because of an air lock or you've got a break in your head gasket causing the compression to transfer into the coolant system.. although i doubt this as the pressure would be so high it'd blow the cap off - it did on mine!
I refilled the overflow tank, let the engine run then refilled it after the water made its way around my system. If worse comes to worse and it is the head gasket thats sh@fted how much do they cost to fix (average) and is it a big job. How will I know?
bodge job = I cut the split bit off and joined another bit of radiator hose to it, used a bit of pipe as the connector and a lot of jubiliy clips. The bodge job on my fan is pretty good, Got a bit of wire coming from a live source and the earth is coming from one of the screws on my shock absorber. lol
i doubt it's your head gasket although did the pipe split cos it was old or because of a build up in pressure?
does the car run like a dog? when my head gasket went it wouldn't even start, it just spun over really fast and pressurised the coolant system,. take the expansion tank cap off and have someone crank the car.. if whater shoots out then it's pretty safe to say your gaskets gone, if not then it probably is just an air lock
the pipe split due to it being old (my car temp wasnt even half way when it went). I had a pipe split a cuple of weeks before. I think its because i had been driving around with a leaky water pump for several several months and now I have put a new one on the worn pipes cant handle it.
The car runs perfect. I did open the overflow tank and started the engine to see if water was flowing through and nothing was happening. My dad reckons it was because the engine wasnt hot so the vavle hadnt opened up. He says their is water flowing through all pipes though as he was having a nose at it whislt I was at work on sunday morn.
How will you know if you've got the airlock out? Normally my car never used to get any hotter then the edge of the first notch on the temp gauge (blue) but everyone reckons that it should be at least half way around the gauge. Which is correct?