w124 shuts off
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1988 300e
w124 shuts off
i have a 1988 300e sometimes when i am slowing down coming too a stop the car shuts off radio still playing really don't know it's off until i look down an see that all my pressures are off but it starts right back up no problem.it doesn't seem like i feel any hesitation as it needs gas just shuts off. could it be that it's idle so low it cuts off don't know please help thanks.
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Joined: Oct 2008
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From: seattle
1990 300ce supercharged and intercooled
It could be a couple of things. First, you have not repl. the fuel pump relay recently, then the idle valve can stick. You can try to clean the idle valve with brake clean or carb choke cleaner. After those two items it gets a little harder to diag.
There is a way to open the idle valve with the stop adj. but I would not suggest that for someone that has never done it. Its not technically difficult but the brass screw can strip really easily. It has to be heated up to get the thread locker to release.
Also something that happens not to often is the a/c compressor can be worn out and have to much load. This is pretty easy to diag. First if the a/c is off then it does not happen. and then just grab hold of the clutch and if it is pretty hard to turn then the compressor needs repl.
There is a way to open the idle valve with the stop adj. but I would not suggest that for someone that has never done it. Its not technically difficult but the brass screw can strip really easily. It has to be heated up to get the thread locker to release.
Also something that happens not to often is the a/c compressor can be worn out and have to much load. This is pretty easy to diag. First if the a/c is off then it does not happen. and then just grab hold of the clutch and if it is pretty hard to turn then the compressor needs repl.
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1988 300e
i changed the fuel pump relay still have problem also changed spark plugs an wires.will try idle check you suggested. it never happens when the a/c is on so do i need to check the clutch or leave it alone thanks
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SLR
I assume it could be the fuel pump... Try checking it by taking the air cleaner of and spray starter fluid on it. Or it could possibly be an alternator, since the radio shut off and then the car died.
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From: Los Angeles
90 300E, 03 E55 Black designo, 06 IWC CLS55
hi there, its your Idle Control Valve. Nothing to do with the other things. My 300e would sometimes just cut out when braking for lights or to take slow turns, used to start up immediately. Refused to believe it was the Idle Con Valve because i really didnt want to gamble on spending a lot of money on something I wanst sure was faulty. So replaced so many different things including the alternator, battery, leads, dist cap, rotor arm and took care of all the oil leaks. But it still would cut out. Finally a real expert explained how the ICV worked and from then on it made sense that it was the fault item. Replaced it and never any more problems. Get a new Bosch one. Do not get a used one that the seller claims has been tested, because seller cant usually see the intermittent faults the ICV develop.
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1991 420SEL & 300E, 2003 BMW X5, 2001 740iL all on DUBS
i fixed my problem It was a dead battery apparently since my battery was so low on power it simply could not keep the car on when the alternator was not charging it. So when im driving the car everything is ok but as soon as i come to a stop the feul pump shuts off cause it was not getting enough juice
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1992 300TE 4matic wagon
i fixed my problem It was a dead battery apparently since my battery was so low on power it simply could not keep the car on when the alternator was not charging it. So when im driving the car everything is ok but as soon as i come to a stop the feul pump shuts off cause it was not getting enough juice
Kevin
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1991 420SEL & 300E, 2003 BMW X5, 2001 740iL all on DUBS
I got a new alternator a few years back do they change the voltage relay at the same time?
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From: Gledale,Ca.
1989 300E
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1988 300e
trying something else
i think i found the problem i sprayed starter fluid on my vaccum lines an found a leak on the hoses on my idle control valve.when i sprayed the fluid the idle revs up an down and cuts off if i have it in drive or reverse.i ordered hose will install and check out will let you know...
