Struggle to start - Vauxhall Antara Forums
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post #1 of 17 (permalink) Old 21st May 2016, 09:04 Thread Starter
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62 plate se nav 2.2 cdti.

Ok so when the car is cold it starts fine. After doing a decent run so engine is up to temperature, if i then stop rest for a while ( last night was about 30 mins) it is very difficult to start the engine, but after taking 30 secs cranking it splutters into life then runs fine.

Anyone got any ideas.

No fault codes at all, historic or actual.Edited by: hmmyip
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post #2 of 17 (permalink) Old 21st May 2016, 10:49
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Can be a difficult one this, specially when no error codes so you're often left to change components and just hope you hit the right one. First thing I'd try that wouldn't cost anything is to see if a jump start from another vehicle or a known good battery helps any. Starter motors get worn and draw excessive current and although a diesel doesn't have ignition like a petrol engine, it still needs a good supply to power the ECU, injectors etc during start.

Another thing that'll cost nothing is to disconnect the engine coolant temperature sensor and see if that helps. Faulty sensors can play up, usually starting when hot.

2015 Antara Exclusiv 2.2 163ps Manual 2WD
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post #3 of 17 (permalink) Old 21st May 2016, 11:41 Thread Starter
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Thanks for the swift reply.

Ive already tried battery, as i have a huge one from a shogun. It never struggles to crank over, so im pretty sure its not ampage.

Got to say it doesnt always do it, but as weather is now getting warmer it has started to occasionally struggle to start. I think coolant sensor is a good shout, i was thinking possibly crank shaft sensor, but you can feel it trying to start before it does, where as crank shaft sensor is just cranking over with no attempt to start.

Where is the coolant sensor? Is it easy to get at?
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post #4 of 17 (permalink) Old 21st May 2016, 13:54
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What kind of mileage has the car done? Is the service history up to date?
Thinking possible water infuel filter?
If really high mileage maybe fuel pump.
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post #5 of 17 (permalink) Old 21st May 2016, 15:47
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Quote:
Originally Posted by hmmyip
Thanks for the swift reply. Ive already tried battery, as i have a huge one from a shogun. It never struggles to crank over, so im pretty sure its not ampage.
Got to say it doesnt always do it, but as weather is now getting warmer it has started to occasionally struggle to start. I think coolant sensor is a good shout, i was thinking possibly crank shaft sensor, but you can feel it trying to start before it does, where as crank shaft sensor is just cranking over with no attempt to start.

Where is the coolant sensor? Is it easy to get at?
Just a point on the battery, mines is an AGM battery 95 Amp/Hr rating with CCA of 900. The ex-Shogun battery may bebig but does it have that kind of power? Granted, it's to stand up to the rigours of the Stop/Start system but some fuel pump and injection systemshave 30 amp fuses and this is off residual current after the starter draw.

I had a look around mine awhile back for the location of the thermostat and the temp sensor and Ihaven't been able to locate them just yet. I could do with a workshop manual for this vehicle but baulk at the kind of prices I've seen.

2015 Antara Exclusiv 2.2 163ps Manual 2WD
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post #6 of 17 (permalink) Old 21st May 2016, 16:22 Thread Starter
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Yep regularly serviced done 30k in 3.5 yrs.

As for battery yep no problems with shogun battery. Can supply 1400 amps at cranking! and is new.

Water in fuel filter? I know my shogun had a sensor and a drain plug for this, though i never had to do it in 4 years. Does the antara?
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post #7 of 17 (permalink) Old 21st May 2016, 18:08
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If you had water in the filter you should be getting a
warning in the instrument cluster. You
will see a diagram of filter and how to drain it on Page 186 of this manual:

https://www.vauxhall.co.uk/content/dam/Vauxhall/Europe/united_kingdom/nscwebsite/uk/00_Home/Owner_Services/owners_manuals/antara/AntaraOwners_Manual_Mar07.pdf

I've never had to do my fuel filter (yet) but apparently
it's under the car just forward of the fuel tank hidden underneath a metal
shield with three bolts. There's two filter elements and there's trouble known
with cracking and/or leaking O rings. New fuel filter element here; http://www.ebay.co.uk/itm/Vauxhall-A...131&rmvSB=true

2015 Antara Exclusiv 2.2 163ps Manual 2WD
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post #8 of 17 (permalink) Old 21st May 2016, 20:28 Thread Starter
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Nice one cheers.

Yep seen the light on ignition this aft after you mentioned it. Its not lighting up while driving so suspect its not that.

I have just changed the air filter this afternoon. It feels to be running loads better, but that might just be me.
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post #9 of 17 (permalink) Old 22nd May 2016, 15:07
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Maybe take it to an independent diesel specialist. If your lucky it might just be a sensor.
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post #10 of 17 (permalink) Old 14th June 2017, 00:37
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I have antara 2.2 diesel stop / start 2012yr. I recent suddenly had occasions when starting engine when warm after driving and resting / engine stopped on key, To restart engine seemed rattle noises,
This worried me (no dash warninglights seen at anytime whilst driving)
Then yesterday, I come out of home having already been on a 50miles round trip without stop / start system active and without stopping engine manually.
As soon as I turn the ignition key, all dash lights went out and car appeared to have died, NO interior lights, horn. hazard flashes etc.
I rang AA (warranty assist),
The guy came and did full diagnostic from port connector below dash. NO Fault codes!
Battery power12.4volts. Then did across main battery check with inspection lame loading across battery, Still 12.4v and light lit. He decided to slave start it with booster box from the rear of theAA van. The engine sprung into life and he was able to check charge from alternator, 13.8 / 14.0 volts fluctuating slightly between both readings.
It was concluded the battery had been failing for a while and suddenly died totally without warning by slow starter motor or dash lights etc.
We tried to locate somewhere which could supply AMG battery (Local Vauxhall dealership said 3 days ordering one specially). several other reputable outlets were tried.
The AA man said they had their own suppliers scattered across uk. He went away from about and hour leaving his power box retaining my security codes. On his return the main battery was replaced and without any issues the engine started. It's vital that if your vehicles is a stop/ start model you have a AGM battery 95 Amp/Hr rating battery installed. My fault / failed battery was manufacturer original and around 4 and 1/2 yrs old. These batteries cost anywhere between £250 and £380. Costly but warrantied for another 4yrs. I was pleased it was only battery, not something else,
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