I HAVE A PROBLEM WITH MY BMW E39(1998).RECENTLY THE TEMP. SHOWING OVER HALF THE METER BUT NOT TO UP RED LIGHT. THE TEMP GONE DOWN AFTER I INCREASED THE TEMP ON THE CLIMATE CONTROL..I CHECK ONE OF THE HOST AT RADIATOR AND IT WAS OK..I WAS SUSPECT MY COOLANT HAVE TO BE CHANGE.IS IT RIGHT? IT WAS NEVER OVER HALF ON THE INDICATOR WHEN I DRIVE BEFORE. PLEASE HAVE ANYONE CAN GIVE ME AN IDEA WHATS WRONG WITH IT.
2007-12-31 00:59:47 · 41 answers · asked by RIDUAN M 1 in Cars & Transportation ➔ Maintenance & Repairs
change radiator
2008-01-07 01:57:52 · answer #1 · answered by mackie 5 · 0⤊ 0⤋
Ayup has got it all covered. There are a lot of answers, not a lot of them too helpful when you're in such a stressful situation. I've got a 1993 E36 and it's never given me an overheating problem before (we've had a lot of old 325i). I would go with the leak suggestion. The good thing is that testing your radiator is really easy and if you go to a mechanic with the diagnostic machine this is exactly the type of problems these machines were built for.
You might find a mechanic that will diagnose it for you for not much (mine does it for free) and if you're handy enough, you can do the repair yourself. Certain leaks are really hard to fix though. The machine is helpful before during and after fixing the problem.
Best of luck to you and many more miles to your E39 in 2008!
2007-12-31 01:42:51 · answer #2 · answered by pat 1 · 0⤊ 0⤋
if its not in the red its normal ,,the temp always gos down when you turn the heating up because you are alowing more hot water in to your heater matrix and then your internale fan cools the water just make sure you have enough water in your radiater also you will have to have the bonet up to check that your radiater fan is coming on
2007-12-31 01:38:49 · answer #3 · answered by KEITH B 2 · 0⤊ 0⤋
I would replace the thermostat if the temp went down after you raised the temp on the climate control. When you increase the temp on the climate control, you cause more water to circulate through the heater core, which cools the water a little. I had the same thing twice and it was the thermostat not opening completely. If you know how to remove the thermostat, you can place it in a pan of water on the stove and start heating the water. You should be able to see the thermostat open at about 180 degrees F. This temp can be a little higher in different engines, but it should be open before the water boils. Good luck!
2007-12-31 01:36:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
My first thought is the thermostat. You say BMW, I say BM trouble U. Get a Honda.
2007-12-31 01:23:05 · answer #5 · answered by Halfadan 4 · 0⤊ 1⤋
Go with the simplist. Start with a cooler thermostat. German cars are not noted for their generosity when it come to extra capacity radiators.
2007-12-31 01:21:54 · answer #6 · answered by Bob H 7 · 0⤊ 0⤋
I honestly have no idea. I think that's one for the mechanics and no one else!! Best of luck though.
2007-12-31 01:20:10 · answer #7 · answered by Kelly M 2 · 0⤊ 1⤋
Try some basic things like checking the coolant level and the thermostat
2007-12-31 01:14:12 · answer #8 · answered by Spooky Mouse 5 · 1⤊ 1⤋
Before changing the coolant suggest you check that the thermostat is working properly. It is basically a valve that controls whether coolant flows from the engine into the radiator. When the engine is cold the coolant should NOT go into the radiator-it needs to stay just in the block and make the warm-up process go faster. Once operating temperature is reached it should open and allow coolant into the radiator. Don't know where the thermostat is on your vehicle....maybe you could ask another Yahoo question!
2007-12-31 01:12:21 · answer #9 · answered by Paul D 5 · 1⤊ 0⤋
I used to have a BMW. It had the same problems. I found out that when I had some work done on it, they didn't put the fan shroud back on it. it made my engine overheat every 5 miles.
good luck
2007-12-31 01:10:20 · answer #10 · answered by Highbeam 4 · 0⤊ 0⤋
In my opinion you have a possible leak somwhere in your cooling system. The places I would check is where the coolant level sensor attaches to the fill tank on the radiator. Another problem to spot is the top of the canister itself (below the radiator cap)... A pressure test can be performed to find the exact location of the leak or if you cant visibly find where the coolant is leaking from.
A bad thermostat could disable the coolant from circulating and thus causing extreme heat and pressure in the system... the weak (plastic) points would go first and with a leak the system will poorly pressurise this causing constant problems. Also How is your water pump? The factory pumps use plastic impellers it could very easily be that the problem is with your waterpump as well.
Hope that helps.
2007-12-31 01:06:49 · answer #11 · answered by ayup me ole china 2 · 2⤊ 0⤋