Centre vent It is common for this vent to crack in the top-left corner. Fits cylinder heads with paired exhaust ports 9. The valve itself can fail , the associated hoses can leak and the dipstick tube can become clogged. Early E39s have the round port under the bonnet, late E39s have the rectangular plug in the cabin, and some E39s have both plugs. However, finding a lifting location is not as straightforward. A threaded plug is included to cap off when not in use. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Trunk wiring harness Chafing of the wiring harness in the trunk is a common cause of problems with rear lights, parking sensors, interior lighting or other other mysterious electrical problems ,.
I also am averaging 16mpg right now. The E39 uses an electronic thermostat, which causes the engine to run hotter or colder based on engine load. Replacement with identical engine: Using a replacement engine of the exact same specification same family, same capacity, same vanos configuration enables the old engine's electronics to be used with the new engine. Fits cylinder heads with evenly spaced exhaust ports 11. Ive heard of the guibo or donut, could it be this? A few people have used a waterless cooling system.
The has a lot of information, and the I6 engines are largely shared with the E39. Blocked jets can cause reduced effectiveness. Special tools to hold the rotating parts in place can be either purchased, created or improvised. Fits cylinder heads with evenly spaced exhaust ports 8. A normal cranking speed does not necessarily indicate that the battery is fine.
Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Ground locations: Cooling system Warning: the temperature gauge on the dash is heavily buffered and may not show that the engine is overheating until it is too late , , ,. For integrated child seats, there may be additional clips to remove. Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. With this Supersprint 'street' muffler you get a sophisticated exhaust upgrade that does not try to imitate a muscle car or sound too raucous and intimidating. If the gasket has failed, coolant build-up may be visible in a recess of the valley pan. Ive attached a sound file with the noise, must admit it sounds worse on here.
No cutting or splicing required. Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation! Not legal for sale in the state of California. Dreading going on the motorway, I'll report back on that tomorrow. Therefore, in addition to the issues noted above, the following issues should be considered. Spark plugs The official specification is for spark plugs should be replaced every 100,000 miles or when showing signs of wear; however some people prefer to change them more often, eg every 50,000 miles.
They will reduce engine fuel map efficiency, which may contribute to the problem. It starts at 1500rpm and stops at about 2500rpm or at least it becomes much less audible. Some brake light problems have been caused by bulb sockets burning out or bent contacts in the socket- even if the lights are still working. A common cause of incorrect charging voltage is the alternator regulator. Just recently I started hearing a rattle during acceleration. Is there a way to troubleshoot the cat? Failed camshaft position sensor, car won't drive, thumb will get frost bite.
The pump and valve can be rebuilt. Sunroof Water leaks in the cabin can be caused by problems with the sunroof drains , ,. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. I got her up on ramps and checked for loose brackets and braces. E39s were fitted with 90 Amp, 120 Amp or 140 Amp alternator. If the timing chain slips due to failure of the tensioner, this could result in extensive engine damage. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud.
Failure of the fan itself or fuse 75 are common causes for the fan to not operate correctly. These can be freeze frame images of Oxygen Sensors. It is probably easiest to slide the exhaust out of the back of the car so you may want lay down something to protect the exhaust from the ground. How do I go about tracking down this rattle? Many thanks to Bluebee, whose tireless efforts cataloguing E39 information created the foundations for this wiki. There is also a filter in the reservoir which eventually requires cleaning or replacement ,.