Author Topic: Cold Starts  (Read 39748 times)

Offline Teutonic_Tamer

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Re: Cold Starts
« Reply #60 on: February 03, 2012, 10:53:26 AM »
Just to bring up a old post. I have exact same problem with my 08 reg Normal GTi (24k miles), especially now the weather has gotten a bit colder. Every morning I start the car, although it starts first time, It hesistates, almost as if its going to fail and then fires up. I've got the Liquid Golf Gauge installed and that has not revelaed any fault codes. The car has also been dyno'd at Awesome GTi who has said the car is in healthy condition. When speaking to a staff at Awesome, they recommended checking the battery?

Is it worth leaving the car with the garage to have this problem investigated or is this a common characteristics of FSI engines?
What spec battery do you have?

The Mk5 GTI was originally specified with a 72Ah battery, but around the 2007 model year change, Wolfsburg started penny euro-cent-pinching by fitting a 70Ah battery.  Now you might think the difference between 72 and 70 isn't significant - but the Ah (Amp/hour) figure is a rating for 'slow drain' power output capacity.  What is more relevant in car batteries is the CCA or 'cold cranking amps' - this is basically the 'stress test' which is basically how much juice the battery has when trying to start a cold engine (there is a specific ambient temperature, but I can't remember it).  The original spec 72Ah had a CCA of 340A DIN / 570A SAE, whereas the cheapskate spec 70Ah had a much better CCA of 380A DIN / 640A SAE.

If anyone still has a 70Ah battery, I'd strongly recommend getting it changed for a 72Ah batt (if not a genuine OEM, then an aftermarket one with a comparable CCA rating).  I had horrendous problems with the 70Ah batt as supplied on mine (competely dead on cold mornings, repeated call-outs of VW Assist, etc, etc) - and the thick monkies at my stealer refused to accept the battery was faulty (tried fannying around with other things such as battery drain from sat nav - the useless cnuts basically just kept turning off the TIM recording settings).  I eventually went compained to VW UK (who still took a little persuading) who authorised (basically told the service 'manager') to fit the 'correct' spec 72Ah batt - and touch wood, the same battery is still going strong five years later.
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Offline daboy3000

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Re: Cold Starts
« Reply #61 on: October 08, 2012, 04:21:06 PM »
Sorry to jump in on the thread but i'm having Cold and hot starting issues on my 140tdi, have changed starter motor and glow plugs and had a service, have just checked the battery and its a 72Ah but not sure how old it is.  It's got to the point where I have to bump it now rather than it just taking a while.  Any ideas?

Offline GLIDN

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Re: Cold Starts
« Reply #62 on: November 23, 2012, 03:10:55 AM »
Sorry to jump in on the thread but i'm having Cold and hot starting issues on my 140tdi, have changed starter motor and glow plugs and had a service, have just checked the battery and its a 72Ah but not sure how old it is.  It's got to the point where I have to bump it now rather than it just taking a while.  Any ideas?

this is specifically to daboy3000.
I bought a 2.0TDI (BKD motor) a little over 3 years ago. Mine also had starting issues. Eventually the car would not start at all.
in the firs 3 weeks, VW replaced all the following parts. Battery, Alternator Wiring Harness, Two injector seals and re-calibrated all the injectors.
It was poor on diesel to say the least. But never had another starting issue afterwards.

Related to this topic -

Our newly acquired GTI. Also seems to have this infamous starting problem. Only when left a while or cold. But turn key and it fails, a few seconds later car starts first pop. It also keeps having the stupid P0441 - upper limit exceeded problem. So will replace the N80 and hose next week. See if the problem then rectifies the starting problem too?

Offline Tr0nic

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Re: Cold Starts
« Reply #63 on: May 31, 2013, 09:57:25 PM »
Have had some starting difficulties too, replaced my battery with a Bosch Silver S4 and I think that made my starting much smoother  :smiley:

Still isn't as good as my Dad's passat TDI tough...
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Offline z00bz

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Re: Cold Starts
« Reply #64 on: January 27, 2014, 12:26:55 PM »
I have the same cold start problems BUT my GTI's symptoms are abit unique compared to the rest to confuse the matter  :confused: -

She doesnt always start up 1st time on cold starts - sounds as tho its going to die and then cranks up fine. (without me having to turn the ignition again) When it does start up, 1 of the following things happen --

* Rear wiper starts to operate it self (until I switch the wiper stalk to 'on' and then 'off') which then returns back to its normal position. 

OR

* The onboard computer completely resets with the clock, trip etc all going to zero (in which I have to set the clock again to the correct time. In addition to this I then get the Steering Wheel, ESP and TPMS lights come on dashboard - these lights then go away completely as soon as I start driving. (within a matter of seconds) My one touch windows feature 'sometimes' needs resetting again but not all the time. Sometimes the one touch window feature still seems to operate as normal.

Any thoughts on this? (She is an 05 GTi with a VARTA 70Ah battery) Warm starts are fine


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Offline JMP

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Re: Cold Starts
« Reply #65 on: March 01, 2014, 07:05:36 PM »
Any thoughts on this? (She is an 05 GTi with a VARTA 70Ah battery) Warm starts are fine

Either your battery is dying or you have a bad ground connection from battery to chassis or to engine block. It might also be wiring to starter motor. What you are describing, happens because voltage drops too low during engine start (those same issues come up if you need to remove and reconnect battery). I would put it on battery charger over night and see how it behaves then. I have seen a lot of mk5 GTI's that had to change their battery after about 6 years, so it might be just that.

Offline Bennz

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Cold Starts
« Reply #66 on: July 13, 2014, 12:01:44 AM »
I posted the same on other thread but wanted to mention it here too . Could the cold start issues be related to coil pack combined with low CCA of the battery ? Mine has the same issue when cold start .

Update : changed the battery to Bosch S5 and it starts immediately ever time from cold start.  74Ah and 680 CCA

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Offline GTiBlues

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Re: Cold Starts
« Reply #67 on: November 15, 2014, 09:40:47 AM »
My GTI is a 2005 build. My car used to hesitate to start when I bought it last year. When I was doing work on my car few months ago, I did a battery health check...the print out read critically low. Popped down to my local TPS and picked up a new battery. I noticed this battery was a higher spec on the figures. Since my car has been a lot better on cold starts.

P/N - ZGBEB 712 096 SE Excell 096 Battery £39.65+vat