BenzWorld Junior Member
Date registered: Sep 2011
Vehicle: 2001 clk430
Location: Sydney Australia
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Possible ecu fault, need help.
Hi Mercedes Benz fanatics, i am a new benz owner (2001 clk430 with 89,000kms). I bought the car 10 months ago and just started to have trouble. The problem (intermittent) in short is that the cel flashes momentarily and the revs drop and if the car is at idle it will stall. If the car is at mid to high rpm the revs drop suddenly as the cel flashes and then the rpm recovers.(the cel does not stay on or store codes) Sometimes the car will do this every 10 - 20 secs other times the car may run for 5 mins.
Symptoms of the problem while the ignition is on and with all lights on cluster on is that the temp gauge will periodically drop up and down, plus i can hear the throttle body clicking and the fuel pump powering up after the intermittent problem is occurring. The car starts every time however when i can hear the throttle body clicking the car doesn't crank straight away when i turn the key. Could it be the ecu is losing power momentarily or a link from das to ecu droping out momentarily? Could bad wiring leading to the ecu be the culprit? I took the car to MB dealership to diagnose the problem the told me that the ecu was faulty and needs to be replaced. The MB dealership quoted me an astronomically high figure for the new ecu. I was wondering what it cost for a new ecu in the states compared to Australia and could i order one throgh a dealer there.
Has anyone out there seen or heard of this problem/symptoms that i am having. I have been searching and researching on the net and at some work shops for nearly a month with no luck.
This is about all the info i can think of need help/advise please.
P.S. i have changed the cps.