Hi guys,
A friend of mine has a 1993 W124 with a 2.5 turbo diesel engine abroad (LHD vehicle). It's got a strange issue that the engine cuts out when you let off the accelerator pedal a bit too quickly - the car starts fine, both on cold and warm, also if you're gently with the throttle, then this is not really a problem, but it gets a bit annoying after a while. Drives absolutely fine when it runs, doesn't seem to have any power issues.
When the engine is running and the car is stationary, if you rev the engine and let off the accelerator pedal, then it will cut out. Essentially, the same thing can happen when you're driving, if you're not careful, as I mentioned above.
I read that it could be the idle control relay (fuel pump relay?), so I managed to find a used unit, swapped over, but it made no difference? Also I was a bit confused with two relays with the same part number (006 545 87 32) having a different number of pins? My relay has 7, if it matters?
Also I tried changing the over voltage protection relay (A2015403745), again without any luck. Thought about the crankshaft position sensor, but the car starts fine, so my assumption would be that the CPS is fine?
Would appreciate if you could point in the right direction to hopefully find what's causing this issue?
Thank you
A friend of mine has a 1993 W124 with a 2.5 turbo diesel engine abroad (LHD vehicle). It's got a strange issue that the engine cuts out when you let off the accelerator pedal a bit too quickly - the car starts fine, both on cold and warm, also if you're gently with the throttle, then this is not really a problem, but it gets a bit annoying after a while. Drives absolutely fine when it runs, doesn't seem to have any power issues.
When the engine is running and the car is stationary, if you rev the engine and let off the accelerator pedal, then it will cut out. Essentially, the same thing can happen when you're driving, if you're not careful, as I mentioned above.
I read that it could be the idle control relay (fuel pump relay?), so I managed to find a used unit, swapped over, but it made no difference? Also I was a bit confused with two relays with the same part number (006 545 87 32) having a different number of pins? My relay has 7, if it matters?
Also I tried changing the over voltage protection relay (A2015403745), again without any luck. Thought about the crankshaft position sensor, but the car starts fine, so my assumption would be that the CPS is fine?
Would appreciate if you could point in the right direction to hopefully find what's causing this issue?
Thank you
