I've been searching the archive the last days and have found quite a lot of threads issuing similar problems. I haven't ( yet ) found any that I can relate to my problem.

When I bought the car ( W124 300TE-24 1991 M104.98 ) I went on a testdrive, ( what else ). After appx. 10 minutes of driving it started to hesitate when throttle was rapidly engaged. Like when you do a kickdown and it takes some millisecs. before anything actually happends. The hesitations continued and in the end it stopped. It started up again and idled ok but when I pushed the accelerator down it hesitated again and stopped. I started it another time and run on idle back to the reseller.

After they had a look at it ( for appx 1.5 hour ) I came back and did another test drive. This time everything was ok and we suspected that it had been the engine washing they had did that caused the problem. ( Moisture )

I took the car home and it run for about 2 months ( 1500km ).

One day going shopping the problem came back. Exact same behaviour and about the same time after starting up from cold. ( 10 min ) I managed to limp into a gas station and did some checking. It wouldn't start at all this time. I waited for appx. 15 minutes ( waiting for a friend ) and did another try - it started. It run without missfiring or any other indication of fault. I went shopping, and then home again ( 12km ).

After a week or so I started her up and let her idle for appx 10 minutes while I was brushing of snow and ice. ( This is Sweden you know ) Took her for a test drive round the block and when I was almost at home - same thing. I was in kind of a hurry this time and walked home to have lunch and went back 15 minutes later. Started her up like nothing.

Another week later, started the car letting it idle for a while. I was only about to move the car so I could get to my 230TE. Then it suddenly start missfiring then revs went down and a sudden stop.

This time it would not start so I checked that the fuelpumps where ok, at least they sounded ok. I also checked that I had sparks by unhooking one of the cables and connected it to a sparkplug I had for spare.

I have been on the Swedish forum with this problem and received the following ideas:

Fuel pump relay - I don't have it on my engine, the MAS controls the fuelpumps.

OVP relay - As I have a car with ASR, I have a 'Electronic accelerator control unit'.

I'm trying getting hold of a Bosch diagnostics instrument to read out any fault codes. But I'll have to wait about two weeks before I can have one here. In the mean time I will try ( if it works on my engine ) to get codes by using the 'pulse counting method'.

I think that there obviously is something in the fuel delivery chain. It might be the cam position sensor that is faulty. ( I think ) I had a similar problem with my Jeep Cherokee but this engine wouldn't start at all until I cleaned the connectors to the sensor.

Anyone?

/Mel ( aka nivis )

__________________
This sentence is false.

i have same engine as yours and have similar problem.

i think your car runs lean when warm but when cold it starts easily and OK because of cold start and after start enrichment.

try unplugging your OXs behind right passenger footwell if still not OK, measure voltage of EHA (5-8ma when cold with ignition on, 2-3ma first 2-8 mins in park or Neutral, 0-1 ma when warm at idle) or you can try removing the EHA but adjust AF mixture manually if it stalls after removing the EHA.

Thanks for your rapid answer!

Some clarification needed please.

Where to find EHA ? ( What does it stand for ?) Isn't it the current you measure when ma ( milliamps )?

__________________
This sentence is false.

its the black thing on the side of fuel distributor(one with tubes going to injectors) with 2 wires.

I solved my problems this weekend. It was a faulty distributor cap and rotor. I did check for sparks when I begun investigating the problem but I didn't actually check the components. It was really worn out.

Some pics:

http://www.mellander.org/per/projects/mb

It's a shame that I didn't check earlier

__________________
This sentence is false.