Tdi lazy starting when warm and short glowplug light

[imortalmonkey]

Hi all

My golf 1.9 110 tdi has a few issues and Im thinking they could be related.

When starting from cold it starts great but even if its been turned off for a few mins its a pig to start takes a good few seconds.

Also the glow plug light is only on for a second??? hot or cold.

Im a little down on power too with some ugly flat spots around the mid range.

Ive recently replaced the gearbox,I replaced the glowplugs two months ago.

Have i disturbed the starter and caused it a problem as it wasnt lazy starting when warm before i replaced the gearbox??

Thanks Aaron

[jonathanfenton]

Hi all

My golf 1.9 110 tdi has a few issues and Im thinking they could be related.

When starting from cold it starts great but even if its been turned off for a few mins its a pig to start takes a good few seconds.

Also the glow plug light is only on for a second??? hot or cold.

Im a little down on power too with some ugly flat spots around the mid range.

Ive recently replaced the gearbox,I replaced the glowplugs two months ago.

Have i disturbed the starter and caused it a problem as it wasnt lazy starting when warm before i replaced the gearbox??

Thanks Aaron

Did you ever sort out the 1 second glowplug light?

[tdigolf]

have you had a cambelt done recantly?

[imortalmonkey]

Hi thanks for the relplies

What I found is that I have a few things going on,The lazy starting is the starter motor and whats happening is the ecu is looking for the starter to be cranking quite fast and until it is it wont let the engine start,on cold start the ecu doesnt look for the rpm of the starter hence the quick start.

Hope that made sense?!! glow plug light still goes out quick...hmmm. starts loads better now tho!!

I think my power issues may be maf related as when i tap it with a spanner the idle speed changes!!! lol,it tops out at 103 mph and it used to do 119 mph.

No cambelt change recently!!

[tdigolf]

have you got a new starter motor or? i notied some times mine spins over quicker than other and when it does it starts quicker, i was wondering if it was the battery

[imortalmonkey]

have you got a new starter motor or? i notied some times mine spins over quicker than other and when it does it starts quicker, i was wondering if it was the battery

with mine i stripped it and lubricated it, just gave it a bit of an overhaul and its loads better,may buy a new one if it goes back the way it was!!

[STEWY L]

[QUOTE=imortalmonkey;352733]Hi thanks for the relplies

What I found is that I have a few things going on,The lazy starting is the starter motor and whats happening is the ecu is looking for the starter to be cranking quite fast and until it is it wont let the engine start,on cold start the ecu doesnt look for the rpm of the starter hence the quick start.

Hope that made sense?!!
not at all
why would it look for crank speed?
crank direction i can understand,but it can't control crank speed.
if the battery's good,and the starter is good it will start faster because it cranks faster and the heat required under compression is generated faster.
unless i have missed something,why does it look for crank speed when hot,
but not when cold?
regasrds,
stewy.

[imortalmonkey]

[QUOTE=STEWY L;353050]

Hi thanks for the relplies

What I found is that I have a few things going on,The lazy starting is the starter motor and whats happening is the ecu is looking for the starter to be cranking quite fast and until it is it wont let the engine start,on cold start the ecu doesnt look for the rpm of the starter hence the quick start.

Hope that made sense?!!
not at all
why would it look for crank speed?
crank direction i can understand,but it can't control crank speed.
if the battery's good,and the starter is good it will start faster because it cranks faster and the heat required under compression is generated faster.
unless i have missed something,why does it look for crank speed when hot,
but not when cold?
regasrds,
stewy.

The ecu doesnt look at the starters crank speed when cold. However it does when warm.
its looking for 2300 rpm from the starter if Iirc befor it allows fuel to be injected. Simples.!! Lol

[STEWY L]

[QUOTE=imortalmonkey;353356]

The ecu doesnt look at the starters crank speed when cold. However it does when warm.
its looking for 2300 rpm from the starter if Iirc befor it allows fuel to be injected. Simples.!! Lol

2300rpm from the starter motor
some starter that is
you will be lucky to see 500 rpm with a very very good battery and starter.
don't know who told you 2300rpm,but he is a very dangerous mechanic to use if he believes that.
i'm gob smacked
regards,
stewy.

[imortalmonkey]

Posted on here in many many posts. ok so i may be wrong on the speed but Im sure your arogance isnt required.