It just goes up a little bit for short periods of time and then come back. We determined from the smell of the engine that something was amiss. Under the extended warranty program, the occupant detection mat in a vehicle that experiences this specific issue will be replaced at no charge to the customer. Other are the thermostat being stuck closed replace plastic thermostat housing with metal one to prevent future break downs when doing thermostat , radiator blocked, fan clutch leaked out all its fluid, electric front fan seized and worst of all head gasket. I cannot Understand This As This is Happenning Often, What Can I do. I would check the radiator coolant regularly to verify coolant loss. Aug 16, 2010 yes, if the water pump is bad, input hose will be hot output hose will be cool, but that also could mean a bad thermostat.
Then another part fails, then another fails etc. By the way my car never overheated. Then put a piece of cardboard in front to block the air flow thru the radiator, or just stop the mechanical clutch fan for 5-10 min if the car is cold. Again after a couple of months it overheated again. Before starting below, be sure to check out our ultimate cooling kit that replaces all common failure points in the E39 525, 528, and 530 cooling system, including hardware. Anyone got any ideas and how easy is it to do as i have already paid out a small fortune!! By the time we twigged to the Overheat condition , the damage was already done.
People with the aluminum engine block are not so lucky as overheating usually causes the threads to pull out of the block when torque-ing down the head. That could lead to a fire. I think I've been introducing air into the system while bleeding due to not enough coolant. When failures of this nature occur, they almost invariably cause overheating every time the vehicle is run for more than a few minutes. From prior experience with these type of vehicle the most likely cause of overheating thermostat and fan clutch. Posted on Mar 06, 2010 Unfortunately, you are experiencing two of the classic signs of a bad head gasket. This it the first time I've driven the car in the extreme cold too.
I'm not worried about that. My car is scheduled for small cooling system overhaul for this saturday. Feel Free to contact me at FixYa. If this occurs, the fuel gauge in the instrument cluster would display a larger amount of fuel than was actually in the tank. The easiest way to see if a head gasket is blown is to check the oil, if it is light brown and milky looking then the head gasket is blown. Over time, increased resistance at the taillight electrical contact points may cause damage to the ground terminal and housing of the connector resulting in an intermittent or permanent loss of functionality of one or more rear lamp functions tail, brake, turn-signal, reverse. In this situation the front passenger air bags will not deploy even if a sufficiently severe accident would occur and occupant protection provided by the system would not be possible.
Yes Review Date: 10th June, 2008 Faults: Replace a few bulbs. I figured it was air in the system and have gone through the bleeding process with no luck. I noticed this happens when I am driving slowly. Since you have overheat problems on and off for a year, I a afraid you may have bigger issues of cylinder head cracks or blown gaskets. The brakes will still work, but the driver would have to press harder on the pedal. What Else Could I look for, Or What has he Missed out. If not, then proceed to Engine Compression check dry and leak-down to rule out cylinder head cracks or blown gaskets.
I agree: do nothing, and don't drive it until you've resolved this. If Steps 1-2 solve your problems then you are in good shape. Also you could run vehicle without thermostat and see what happens. A failure of the brake vacuum pump results in a reduction in braking power that could increase the risk of a crash. Its going into the drive of our new to be house tomorrow and then sorned so im just looking for any thoughts on the overheating so ive a rough idea whats going on with it when i lay it up.
Also warp that long cylinder head. Your car probably has a cast iron block, with an aluminum head. The I6 is particularly sensitive to overheating, and the needle won't move until 117°C which is pretty hot considering that the car is designed to operate between 90° and 100°C This is the very reason I always recommend a Cooling Overhaul when one gets to 80-100K miles for the 6-cylinder E39. Let it cool and checked the coolant and its not used any. Does the underside of your oil cap look like brownish mustard? Doing a Cooling Overhaul is basically shooting 10 birds with one stone.
The insulated bulkhead connector for the positive battery cable may have been incorrectly attached to the trunk floor panel, which can lead to a loosening of the bolt connection. Feel Free to contact me at FixYa. I have replaced the viscous fan, thermostat, and water pump. But I agree with you the over heating will be there during driving as well. The Vanos variable valve timing also helps, and you can toodle around town at 2k revs in 4th when you need to. Hi Tim, can't see how replacing the rocker cover gasket will help your over heating problems but had mine done recently and it does give you a nice clean engine. I took to another mechanic he changed the coolant reservoir, the water pump, and the fan shaft I am not sure if it is the right name for it.
Sometimes if you don't keep good antifreeze in an engine the freeze plug will rust through and start leaking. That part isn't too hard, it just depends on where the freeze plug is. When cool, open expansion bottle and turn on engine, if you see bubbles head gasket is gone. LoL 356,650 - I think she owes you a good few miles yet mate Could be a head gasket problem, have you done any checks for this? I have replaced the viscous fan, thermostat, and water pump. Your help will be appreciated. Anyone else have this problem? I noticed this happens when I am driving slowly. Cheers, Joe - Same problem here, last week i noticed small crack on the plastick side of the radiator where the hose connects.
I took to another mechanic he changed the coolant reservoir, the water pump, and the fan shaft I am not sure if it is the right name for it. When enough air is in there, and the traffic conditions are right, the car heats up or overheats. Could there be a blockage in one or more hoses? Had symptoms much like yours. If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Mine comes with carbon fibre effect trim, which looks great. Also have fluid checked for combustion gas.