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VW Golf 140 TDI 2004 Plate. - Golf GT 140 TDI - Hot Start Problem - RueyBristolVW

Ref my car, it’s a Golf 2.0 GT TDI (140) on a 2004 plate – it’s a mk5 version.

The problem, it starts absolutely fine cold, first time. When the engines warm, it doesn’t start very easily, in fact it turns over for a few seconds before it eventually starts, almost like it’s stalled or the batteries flat.

There’s various views and opinions surrounding this, which are available on the internet. A number of views on the internet point to glow plugs as a possibility. My garage chap, ran diagnostics on the car and it returned a fault with ‘Glow Plugs’. Although they’re not 100% certain, it’s looking possible that the glow plugs are what’s causing the starting problem.

Also, I’ve been told that when replacing glow plugs they can snap and if this happens then I’ve a bigger problem to replace them, engine out. Normally and in most cases the glow plugs come out easily without snapping and are replaced. However, this is still causing me concern, especially considering it’s not necessarily going to fix the problem.

Another garage who are mapping specialists have suggested a PD 'hot start' Map, which will apparently solve the problem, this garage (the mapping specialist) has said that he's repaired this problem on multiple occasions and it will work. I'm worried because I've been told mapping can just add to problems.

So over to you lot - talk to me, help me!!?? Look forward to hearing from you and thanks in advance for your time.

Edited by RueyBristolVW on 23/08/2013 at 14:52

VW Golf 140 TDI 2004 Plate. - Golf GT 140 TDI - Hot Start Problem - sam87
Interested to hear the outcome of this as my seat leon has the same problem exact same engine etc.

PS. What's different about a PD hot start and any other normal remap to upgrade power (which mine has had done already).
VW Golf 140 TDI 2004 Plate. - Golf GT 140 TDI - Hot Start Problem - tourantass
Hi, i had the same issue, it turned out to be a "lazy" starter motor which tricked the ecu into thinking it was always a cold start.
VW Golf 140 TDI 2004 Plate. - Golf GT 140 TDI - Hot Start Problem - Ordovices

If you think about it, when does the car most need good glow plugs?

During a cold start.

So if your glow plug(s) are duff, you'd expect the cold start to be protracted, rather than a hot start. I, personally, would be looking elsewhere, both for the problem and a mechanic :D

VW Golf 140 TDI 2004 Plate. - Golf GT 140 TDI - Hot Start Problem - A3 A4

Plenty of info here....

http://www.audi-sport.net/vb/a3-s3-sportback-8p-chassis/77957-golf-a3-2-0-tdi-starting-problem-can-anyone-help.html

VW Golf 140 TDI 2004 Plate. - Golf GT 140 TDI - Hot Start Problem - Avant

One thread on this subject is enough - please comment on the other one.