graham63

Hello.... Just joined the group.... but I have been reading the forums for a couple of months now.

I went half's on this car with my son (1989 MB 260E with under 200 kms)
The car recently stopped starting..... will turn over and rumble to life for a couple of seconds....and you have to turn the car to the off position the start it again only to the same results.

When we got the car I changed spark plugs(NOS),wires,rotor and distributor . New fuel pump relay , battery , fixed ovp relay and new regulator in alternator. Also new serpentine belt and used tenser as mine was just spinning.

I even adjusted the EHA just a 1/4 turn yesterday to see if it would help...no help.(and yes I got sprayed on...noob)

Duty Cycle... I get a reading of 30.8 before turning over the engine and after it reads 60.8 ..... so could the engine temp sensor cause the engine not to run?

Any Help/ideas ?
Here in Alberta those with learners lic's have to wait a year before going for there Drivers lic. and the car will be my son's after that...but he's losing faith in the car. Money is tight as we all know so it's a DIY project.... just racking my brain so any help please.

graham63

forgot to add, I check Crank sensor and got 828 ohms and put in new fuel filter

optimusprime m1

Graham yes the tempo sensor could send a message to the ecu to say it was up to temp and set injection to run lean so it will stop. Check Can you join up pins no 7 and 8 on fuel relay ? to get it to start but dont let it run to long with it bridged as it will put fuel in to engine after it stops. Also check all earth points clean them up .turn fuses in their holders .Check for vacumm leaks on pipe and rubber conectors. I will send PM you a workshop manual that will help .

optimusprime m1

Unable to put this in to your PM So this is what you need
Google search put in Mercedes 124 Maintenance Manual Index.

graham63

Alright I'll google for it. In my other post I had some one come over.... he did jump those points and it did start... he said it could be the tach(hunting one down now).....so I'll look into a temp sensor. The car was acting up before it stopped running. when warm it would not start with out giving it gas to start,so when doing it now it just keeps cranking with no firing up... so again will look into a temp sensor.....
Thank-You for your help

graham63

OK googled and saved. New sensor$117.35 plus 5% , will phone and see if they need to order it in.

optimusprime m1

Graham did you check to see if it as spark at the plugs And fuel at the injectors. Will it run at all? [start up ] Also did you google that workshop manual.

optimusprime m1

This may help

graham63

jumping 7/8 (87/30)does start . It's been raining when I get home these last few days and it died at the front of the house and not in the garage ....so have to wait for a break.
yes I bookmarked the shop manual... I'll just clean all the grounds in the engine bay before anything else.

graham63

I installed a used cluster(93000Kms on it) and still the same.... will now check for leaks.

optimusprime m1

Graham 63 how did you get on with your car? Keep us updated.

graham63

Well I build another blink code reader(1st one died and this time I got the right parts) Before the rain and hail started again I got the following :
3 blinks .... coolant temp sensor
5 " .... Oxygen sensor
6 " ..... Not assigned
9 " ..... Electric actuator
10 " .... ThrottleValve switch/idle speed contact
repeated
So they don't have the coolant sensor here so I'll have to get one from Pelican or Rock. I did waste to little sunshine we had at a yard only to find out they entered the wrong model of mb 300e that they had( want to test it before I tested my own).
Oxygen sensor I had cleaned before.... so leaving it for now .
My wife is home for the weekend before returning to the hospital for treatment on Monday night (Long weekend here) so just trying to make mama happy.

optimusprime m1

Graham yes there are 2 types ,one round with 4 contacts in and a one with 2 contacts green nothing like one another , i think the later one is like mine...so yours has a cat in the pipe Start with one at a time ,like the sensor first.Then go from there. The temp sensor can play a big part with these other 4 items. Do make sure you orderd the right one .Because there are 2 ,one for temp guage in the console ..

optimusprime m1

Gra this is the throttle switch see pics .Also it will show you a good one and a bad one .You need to remove it to check ,you will see if the carbon track is damaged . Also Google search again put this in now-
What to do when my M103 is giving me trouble A rough guide . Read the post.

optimusprime m1

The last pic is the other type temp sensor i will post the type on my engine .

optimusprime m1

This is the type of temp sensor i have in my m103 engine .

optimusprime m1

Did you replace the wires? and put them back on distributor in right order. And with resistor less plugs .These engines dont like resistor plugs. Just check the wire locations out on distributor.This is 190e but the same engine.

graham63

That is the temp sensor (2 prong) I ordered.... a week to week and a half del time.
the m103 giving me trouble by artisianexcite..... I've read it several times and bookmarked.
Correct type of plugs and new wires , cap and rotor .

optimusprime m1

Grahma I have more information for you I need you to clean your idle control valve .But by going to this site it will give you step by step instructions .Google search again -
in the search box put this in Peach Parts Wiki Do it your self Any probs let me know

graham63

I did clean it when I cleaned the o2 sensor....they both got their own bath... and I checked it the other day with the battery.... it opens and closes

optimusprime m1

Graham do use the wiki i sent it as lots of info on there...As for you car i am stuck like you This may be the temp sensor we will have to wait and see.Can you get some one to try and start while you look at the throttle plate ,you will see if its moving .As the throttle pedal is pushed down.Ther is also 2 small switches on the bowden cable [throttle cable] see if they are clicking or not .

graham63

alas I'm home alone right now.... wife in hospital and son camping...... are two dogs are no help...lol.... I'll see what I can do by myself ....

graham63

Rock just emailed and said Aug 15th del date

optimusprime m1

Keep on it mate hope it solves the problem. In the mean time go and check all earth points you can find ,clean ,and grease, then put them back on . 90% of problems are bad earth .Then check all vacuum pipes and their rubber ellbows [joints] for splits. This is proventive maintenance .Thats after the dogs have licked you crazy. Also did you tyrn all the fuses in the fuse box.

optimusprime m1

You will find all ground locations in the manual under no - 24 electrical trouble shooting ground locations. I remember a friend , have his choke cable getting realy red hot when he started his car .The earth on the body was painted over, as the car was new ,the earth was not making contact ,it earthed through the choke cable...thuse the red hot cable.