Starter fuse blowing on c 220 CDI

[Rob Corfield]

I have a 2003 Mercedes C class 220 CDI estate. I have replaced a leaking injector seal. When I came to restart the car I found that the starter motor just gave a loud continues clicking noise, and on removal of the starter, found the cast cover which supports the drive cog was broken. I have fitted a reconditioned starter (RTX from Euro car Parts). Now the starter fuse (no 52 – 15 amp) blows when I try to turn the starter, I have tried a 20 amp (and a 25!) but it still blows. Euro parts have exchanged the starter but the result is the same. The fuse even blows if I just connect the feed to the starter solenoid (with the starter not fitted in the car). The engine turns over when cranked by hand and the there does not appear to be any damage the teeth of the large cog which the starter engages on.

Any suggestions please- the only positive is that we now know how to take out and refit a starter to a C class !

 

[Robbostanhill]

Fuses

I have a 2003 Mercedes C class 220 CDI estate. I have replaced a leaking injector seal. When I came to restart the car I found that the starter motor just gave a loud continues clicking noise, and on removal of the starter, found the cast cover which supports the drive cog was broken. I have fitted a reconditioned starter (RTX from Euro car Parts). Now the starter fuse (no 52 – 15 amp) blows when I try to turn the starter, I have tried a 20 amp (and a 25!) but it still blows. Euro parts have exchanged the starter but the result is the same. The fuse even blows if I just connect the feed to the starter solenoid (with the starter not fitted in the car). The engine turns over when cranked by hand and the there does not appear to be any damage the teeth of the large cog which the starter engages on.

Any suggestions please- the only positive is that we now know how to take out and refit a starter to a C class !

Raising the fuse rating will eventually cause a wiring burn out...Fuses are there for a purpose !

I suggest disconnecting the starter feeds, isolate and then try the start position on the keyswitch. Then reconnect the low tension side to the starter and see if the fuse blows.
After that the heavy duty side and see if the fuse blows.

There must be a short somewhere

 

[rpe2]

Hmmm, this thread http://forums.mercedesclub.org.uk/showthread.php?t=46827 would seem to confirm the starter, but as it's new I'm with the chap above on a short.

 

[mattkh]

Any suggestions please- the only positive is that we now know how to take out and refit a starter to a C class !

Hi
Any chance of photos of the cable end of the starter in situ.

 

[Alex Crow]

Really sounds like the trigger wire has been pinched between two parts somewhere.
The fuse should never blow without the starter connected.
As above, do not be tempted to use anything bigger than a 20A fuse on this, unless you like barbecued car.

 

[denchen]

Im no expert on this but by what you are saying the trigger wiring as Alex is saying is shorting. I would fit a small fuse to replace the one that keeps blowing. Do not connect the wire to the solenoid, make sure it is not touching anything and then turn the key. If the fuse blows you know it`s not the starter but the wiring between the key and solenoid. Hope this helps.

 

[Rob Corfield]

starter fuse blowing

Thanks everbody for good advice - but have realised I had only connected one of the two cables to the main body of the starter - at third attempt starter now works - operator error !!

Not going over 20 amp on fuse !

Car failed to start but fired up on replacement of original defective injector !

The engine now runs fine but I have an additional problem - after about 5 minutes of running the engine a malfunction comes up saying - engine oil visit workshop - I have checked the oil level electronically but it says its OK - when I turn the ignition off the warning disappears only to pop up again after 5 minutes driving

Any ideas ??

 

[turbopete]

slightly overfilled?

 

[jj1975]

Thanks everbody for good advice - but have realised I had only connected one of the two cables to the main body of the starter - at third attempt starter now works - operator error !!

Not going over 20 amp on fuse !

Car failed to start but fired up on replacement of original defective injector !

The engine now runs fine but I have an additional problem - after about 5 minutes of running the engine a malfunction comes up saying - engine oil visit workshop - I have checked the oil level electronically but it says its OK - when I turn the ignition off the warning disappears only to pop up again after 5 minutes driving

Any ideas ??

You can check exact amount of oil in litres by presing the reset button when the key is turn position 1 and the small screen show miles the car has done and after volumeter show up turn the key position 2 and with arrows on steering wheel find menu for showing oil level hope this helps

 

[Rob Corfield]

Oil Level

Thanks - really helpful - how would someone get to know this stuff ! - first time on the forum and wish I had used it before.

Oil level reading says 6.4L - which I presume is OK as capacity is 6.5L

I have had some diesel spraying around the engine compartment could this have affected the sensor ?

 

[television]

All oils are non conductive, not 100% sure on diesel as I have never tested it

 

[Nicholast]

I have a 2003 Mercedes C class 220 CDI estate. I have replaced a leaking injector seal. When I came to restart the car I found that the starter motor just gave a loud continues clicking noise, and on removal of the starter, found the cast cover which supports the drive cog was broken. I have fitted a reconditioned starter (RTX from Euro car Parts). Now the starter fuse (no 52 – 15 amp) blows when I try to turn the starter, I have tried a 20 amp (and a 25!) but it still blows. Euro parts have exchanged the starter but the result is the same. The fuse even blows if I just connect the feed to the starter solenoid (with the starter not fitted in the car). The engine turns over when cranked by hand and the there does not appear to be any damage the teeth of the large cog which the starter engages on.

Any suggestions please- the only positive is that we now know how to take out and refit a starter to a C class !

Did you get help?

 

[mattkh]

He realised he had only connected one of the two cables to the starter.