Starter Motor Issue

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Delwyn

Delwyn

Active Member
Posts
151
Location
Widnes
Hi All, I have a starter problem on my 300TDi. The starter engages properly to start the engine but you have to keep the starter running for a second or so before the engine will run on its own, any ideas please?
 
Delwyn said:
Hi All, I have a starter problem on my 300TDi. The starter engages properly to start the engine but you have to keep the starter running for a second or so before the engine will run on its own, any ideas please?
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That doesn't sound like a starter motor problem. Sounds like the engine is taking a while to fire. Does it run ok once it fires? Does the starter turn the engine over quite fast or is it laboured?
 
Don't really get this bit either.
Delwyn said:
The starter engages properly to start the engine but you have to keep the starter running for a second or so before the engine will run on its own
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Or do you mean the solenoid engages the starter, but the engine does not turn over for a second or two after you turn the key and hear the starter engage
 
Yes the engine does take a few turns before it fires, its an Auto EDC. Once its fired it runs great. No, its turns over well.
 
Devilish said:
Don't really get this bit either.


Or do you mean the solenoid engages the starter, but the engine does not turn over for a second or two after you turn the key and hear the starter engage
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The starter will turn as soon as you turn the key as it should but when you would normally let go of the key once its fired it stalls, you have to keep to starter running with the engine until its ready to go on its own after throttle input.
 
Delwyn said:
Yes the engine does take a few turns before it fires, its an Auto EDC. Once its fired it runs great. No, its turns over well.
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Hmmm, know nowt about the EDC ones apart from the fact they have a few more horses to cope with the auto box, IIRC. I wonder if the EDC unit is taking a second or so too long to open the stop solenoid. I'm presuming here that the EDC unit controls that, rather than a straight live feed from the ignition as in the standard 300Tdi. Other than that I'd be wondering when the fuel filter was last changed or lift pump. Or, small leak in fuel pipe that's allowing air in and taking a second or two to get fuel through after been sat for a while.
 
It is possible that it is the stop solenoid as yes the EDC does control that. Its always been a slow starter but only recently this problem has occurred so don't think its air in the fuel.
 
You might just have a sticky stop solenoid then, marra. IIRC they can get a bit of cr@p in them which can cause them problems opening and shutting or even keeping them shut/open. I think you can unscrew them and give them a clean.
 
Great thanks. I was hoping it would be simple :) I will take the starter out and give it a good clean I think and maybe replace the solenoid to be sure. Do the solenoids just unscrew or are they bolted on?
 
Delwyn said:
Great thanks. I was hoping it would be simple :) I will take the starter out and give it a good clean I think and maybe replace the solenoid to be sure.
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:confused: That's not what I'm saying, Delwyn. I think your starter motor and starter solenoid are ok. I suspect that your fuel shut off solenoid may be a bit slow to react. Possibly because there is some gunk in there stopping it sliding back and forth. That's just my best guess though!
 
Delwyn said:
Ah ok sorry I thought you meant the starter solenoid:cool:
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Sounds like your starter is engaging and turning over vigorously as it should. So, if it's taking a while to start then I'd start thinking fuel supply. You want a recently changed fuel and air filter, so that you can rule them out of interfering with getting good combustion. Then there's delivery of fuel from lift pump, then if the fuel supply is being opened by the stop/shut off solenoid. You could take the solenoid out and try putting 12v across it. 12v live to terminal and an earth/negative to the solenoid body. That way you could switch it off and on and see how quick it is to react. Also, this will give you a chance to see if there is any gunk around the plunger slowing it's movement. If it is stop solenoid related, hopefully it's not an issue with the EDC unit controlling it, cos that sounds like it will be a pain. Hopefully, someone with 300Tdi EDC experience will chip in to this thread.
 
Thanks for that. I will have a look at that tomorrow. I just hope it's not a tamper proof with the 3 wires, if it is, what can I do, or give it to a LR specialist to do?
 
Delwyn said:
Thanks for that. I will have a look at that tomorrow. I just hope it's not a tamper proof with the 3 wires, if it is, what can I do, or give it to a LR specialist to do?
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Don't know, mate. My stop solenoid just has one wire to it. The live wire. It's earthed through the body of the valve. What three wires are you on about?
 
So has mine hehe just checked. In some on the later ones they made them tamper proof as you can hot wire so easy from that to the starter.
 
Delwyn said:
So has mine hehe just checked. In some on the later ones they made them tamper proof as you can hot wire so easy from that to the starter.
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Ha, ha. If it's just the stop solenoid needing a clean, it'll be a simple fix. Good luck with it :)
 
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