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110 Iain

Member Since: 11 Nov 2019
Location: Scotland
Posts: 82

2008 Defender 110 Puma 2.4 USW Chawton White

2 years starting issue

Hi been trying to get to bottom of starting issue for 2 years now 2008 110 commercial she starts first time sometimes but regularly take 4or 5 attempts spins over well but just doesn't catch leave sitting a bit then will start so far in order have replaced battery starter motor ignition switch earth cables under seat relays glow plugs maf sensor starting her ia lottery use it every day so would like to get to bottom of problem any further suggestions would be appreciated cheers Iain. Endeavour To Persevere

13th Jan 2022 7:01pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 1991

Have you any diagnostic trouble codes (DTC’s) ? These would help.
One thing it could be is a failing crankshaft position sensor, but I would have thought that would have registered a DTC and perhaps a check engine light.

16th Jan 2022 2:20am

110 Iain

Member Since: 11 Nov 2019
Location: Scotland
Posts: 82

Thanks for reply have basic reader only code I get is occasional maf error p1103 no check lights on dash it's a lottery some days instant start next day 5/6 attempts when engine warm starting general OK but not always you are right I should get it plugged into proper unit and see if any stored codes. Endeavour To Persevere

16th Jan 2022 11:53am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20302

How old is the starter motor?

Also VCV?
The latter is less likely to be too much of a culprit but may add to it.

There is the crank position sensor as well, but as far as I know that tends to either work or completely fail.

Glow plugs, are they working? ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

16th Jan 2022 12:21pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 1991

It could be a range of things, and can get costly if changing out components only to find the issue remains.

Another cheap thing to do is clean the MAP sensor, these can get a bit gunked up on the 2.4.

Also run some millers diesel power ecomax through a few tanks to help clean up injectors etc.

And really check all earths are clean and well torqued up.

16th Jan 2022 1:52pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20302

Very true, I’ve found checking and doing the things that cost the least the best approach.
Typically that will result in a good outcome in its self. 👍🏻 ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

16th Jan 2022 2:02pm

110 Iain

Member Since: 11 Nov 2019
Location: Scotland
Posts: 82

Thanks guys I'm getting a bit obsessed with this took it out today frosty she started first turn dove about 30 min parked up for about an hour and took 4 attempts to start so frustrating so far new heavy duty batt new earth cables new starter motor new lgnition switch replaced glow plugs and relays run Millers additive a few times perhaps it's fuel related but that's a bit beyond me I have a basic Autool obd reader anything I should look for when I start her up its so erratic Id rather something broke thanks again for replies. Endeavour To Persevere

16th Jan 2022 5:30pm

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