1988 300E Stalling
08-09-2016, 06:48 PM
#1
1988 300E Stalling
Hello All,
I have a Mercedes 300E with roughly 190,000 miles. For several years now, I have been dealing with an intermittent stalling issue. Typically this is the sequence of events:
1. Intermittently the ABS malfunction light comes on in the instrument cluster. This may stay on for just a few seconds, or it may remain for a few minutes. It has NEVER remained on for as much as 1 hour. When this light is on, the engine is prone to become "rough" at low RPMs.
2. While the ABS light is on, if the RPMs drop close to idling - for example when I slow to stop at a light or to make a turn - the RPM's may continue to drop past the idle point and the car may stall. I may see the "Check Engine" light flash on just before the car stalls.
3. When stall occurs all electrical systems remain on, but the steering locks up as soon as the engine cuts out.
4. Typically the car starts up again right away, with the ABS light off and the engine running very smoothly.
At one point 3 years ago, this problem became progressively worse and more frequent. This ended with the car stalling one day and I could not restart it. When towed to the shop however, the car started just fine and the problem could not be replicated. We decided to replace the fuel pump relay and this seemed to help - stalling frequency decreased sharply, and when stalls occur the car can be restarted at once. BUT, the problem continues intermittently - a typical pattern is several stalls will occur within a 1-3 day period, then there are no problems for a while.
I believe the ABS light coming on triggers this, or is associated with this, in some way, but my mechanics don't seem to agree. Any ideas? Thanks.
I have a Mercedes 300E with roughly 190,000 miles. For several years now, I have been dealing with an intermittent stalling issue. Typically this is the sequence of events:
1. Intermittently the ABS malfunction light comes on in the instrument cluster. This may stay on for just a few seconds, or it may remain for a few minutes. It has NEVER remained on for as much as 1 hour. When this light is on, the engine is prone to become "rough" at low RPMs.
2. While the ABS light is on, if the RPMs drop close to idling - for example when I slow to stop at a light or to make a turn - the RPM's may continue to drop past the idle point and the car may stall. I may see the "Check Engine" light flash on just before the car stalls.
3. When stall occurs all electrical systems remain on, but the steering locks up as soon as the engine cuts out.
4. Typically the car starts up again right away, with the ABS light off and the engine running very smoothly.
At one point 3 years ago, this problem became progressively worse and more frequent. This ended with the car stalling one day and I could not restart it. When towed to the shop however, the car started just fine and the problem could not be replicated. We decided to replace the fuel pump relay and this seemed to help - stalling frequency decreased sharply, and when stalls occur the car can be restarted at once. BUT, the problem continues intermittently - a typical pattern is several stalls will occur within a 1-3 day period, then there are no problems for a while.
I believe the ABS light coming on triggers this, or is associated with this, in some way, but my mechanics don't seem to agree. Any ideas? Thanks.
08-12-2016, 05:32 AM
#3
Super Member
Check this out on youtube .You need to replace the over voltage relay it sits at the rear of battery .On top of the relay you will see two, or maybe just one , fuse . Remove it give it a shake ,if it rattles its shot.
10-23-2016, 02:22 AM
#6
Member
It would be nice if in each case the thread starter tells us if the advice obtained here has helped resolved the problem and if not how it was finally sorted. I find the forum very useful in helping me with where to look first in trouble-shooting.
As our cars get older, oxidation of electrical contact points and rusting of metal parts would give rise to problems. Rust in the fuel tank is a common issue for aging vehicles. The fuel filter would have helped if it is replaced more frequently along with the age of the car, but eventually the tank strainer at the bottom of the fuel tank would become clogged and need deep cleaning or replacement. See pictures and discussions from the 190E forum below.
http://mercedes-190.co.uk/topic/6690827/1/
As our cars get older, oxidation of electrical contact points and rusting of metal parts would give rise to problems. Rust in the fuel tank is a common issue for aging vehicles. The fuel filter would have helped if it is replaced more frequently along with the age of the car, but eventually the tank strainer at the bottom of the fuel tank would become clogged and need deep cleaning or replacement. See pictures and discussions from the 190E forum below.
http://mercedes-190.co.uk/topic/6690827/1/
10-23-2016, 06:24 AM
#7
Super Member
QVHK yes makes you think if it worth looking in to helping others , after members dont reply .But maybe he as problems .Some times i look for some time to find a fix for the problem .Only to get no after news ,to say it worked or not....
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10-23-2016, 07:56 AM
#8
Member
w/ smiles
Jimmy
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optimusprime m1 (11-26-2016)
10-23-2016, 08:32 AM
#9
Super Member
10-23-2016, 03:34 PM
#10
Member
