Starting issue

[Mr_Viking]

hi all i have a mk7 t260 2008 euro 4 2.2 tdci 140ps

In the morning when you try to start it its like the battery is being disconnected while cranking( dash lights, interior flicker on/off) And starter clicks like low battery also if i let the glow plug light go out then turn the key it doesnt crank at all.

but once its started its starts all day no problems.

Checked all fuses, relays, cleaned earth points, have ordered a new ignition switch as thats my suspect.

Plugged it in and no dtcs

Any other ideas?

[5h4ggy]

Check the battery, mine did this. The battery was holding volts and charge but had a load test done and it was poor. Battery sorted

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

[Mr_Viking]

Check the battery, mine did this. The battery was holding volts and charge but had a load test done and it was poor. Battery sorted

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

i have done that, put battery from my other van in and still the same also when i put ignition in position 2 i get ------ where my mileage is.

also it is not the ignition switch as i swapped it with my other van.

even put leads from battery straight to starter motor and still same thing.

also took starter motor off and tried to "start" the van and it does the same thing but does spin, if i put my hand on the relay i can feel it clicking but have changed the relay.

Haven't had the van long and the starter looks quite new.

[Mr_Viking]

Here is a video of what happens

https://youtube.com/shorts/IdN9GYGpBxA?feature=share

also when it does start it dies right after

[Mr_Viking]

update: after checking all the wiring (and others posts with similar issues) im thinking it has to be a faulty pcm as everything else is fine as far as i can tell. i have ordered a dongle for forscan to see if that can pick up any codes the delphi can't.

[5h4ggy]

Just a thought, 1 of the pulleys isn't seized? Or seizing Making it really hard for the starter to turn?

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

[Mr_Viking]

Just a thought, 1 of the pulleys isn't seized? Or seizing Making it really hard for the starter to turn?

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

i'll have a check when its not hammering it down, but i did take it on a 2 hour drive over the weekend and it was fine when started, surly the belt would of snapped if a pulley was seized?

its so strange as once i get it to fire up it drives fine

[5h4ggy]

It's very odd, only reason I suggest is had a rwd 2.4 and the vac pump started to seize and the van did a much less extreme version of what your seems to be doing, once started it was fine, I didn't realise it was seizing to I carried on using. And then is propper seized and snapped the belt. Just thinking of the easy stuff to check.

I also had the main starter fuse blow on a van, that's under the seat it's like 350amps or something daft, I was stranded and swapped it out for a bit of metal I had in the van. The metal also gave me that kind clicking and then It started. The metal obviously wasn't a good enough conductor. So maybe have a look that to maybe a bad connection and the little extra load need in the morning for a cold start is making the fuse or a connection throw a wobbly

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

[Mr_Viking]

It's very odd, only reason I suggest is had a rwd 2.4 and the vac pump started to seize and the van did a much less extreme version of what your seems to be doing, once started it was fine, I didn't realise it was seizing to I carried on using. And then is propper seized and snapped the belt. Just thinking of the easy stuff to check.

I also had the main starter fuse blow on a van, that's under the seat it's like 350amps or something daft, I was stranded and swapped it out for a bit of metal I had in the van. The metal also gave me that kind clicking and then It started. The metal obviously wasn't a good enough conductor. So maybe have a look that to maybe a bad connection and the little extra load need in the morning for a cold start is making the fuse or a connection throw a wobbly

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

Will deffo give them a check, i have checked all fuses with multi-meter and they seem ok. I also bypassed the fuses under the seat with some jump leads to the fuse box under the bonnet (well was bypassing the live wire to see if that was knackered) but same thing.

[5h4ggy]

Has your van got 2 batteries or 1

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

[Mr_Viking]

Has your van got 2 batteries or 1

125 T 350 LWB 2003 *dead*
100 T 300 LWB 2002 *dead*
115 T 350 Trend Lwb 2011 *gone*
140 T 280 GLX MWB 2008

just the one

[andz327]

Probably the the ignition switch, if your decent with the spanners take the starter out and strip the starter(2× Phillips screws, 2x 8mm or sometimes 7mm long bolts and 13mm nut )and check the brushes as they can give same symptoms, clean it all out lube the little planet gears , if it needs brushes you can get off ebay for about £20, if brushes ok just a clean and lube makes big difference

Sent from my SM-G975F using Tapatalk

[Mr_Viking]

Probably the the ignition switch, if your decent with the spanners take the starter out and strip the starter(2× Phillips screws, 2x 8mm or sometimes 7mm long bolts and 13mm nut )and check the brushes as they can give same symptoms, clean it all out lube the little planet gears , if it needs brushes you can get off ebay for about £20, if brushes ok just a clean and lube makes big difference

Sent from my SM-G975F using Tapatalk

Ok i'll give it ago but tbh the starter looks brand new

[tranmx2]

hi all i have a mk7 t260 2008 euro 4 2.2 tdci 140ps

In the morning when you try to start it its like the battery is being disconnected while cranking( dash lights, interior flicker on/off) And starter clicks like low battery also if i let the glow plug light go out then turn the key it doesnt crank at all.

but once its started its starts all day no problems.

Checked all fuses, relays, cleaned earth points, have ordered a new ignition switch as thats my suspect.

Plugged it in and no dtcs

Any other ideas?

Starter solenoid contacts dirty. Supply to starter solenoid interrupted.

if i let the glow plug light go out then turn the key it doesnt crank at all. Glow pug supply could be on a timer, can be a bimetal switch. Battery drained - could be direct earth on glow plug circuit.
Make / break in circuit - eg wire on solenoid touches - gets warm - moves away. Vibration can cause make/break in circuit. Is damaged part of circuit can be supply or return. Corroded earth can cause this symptom.

[Mr_Viking]

Starter solenoid contacts dirty. Supply to starter solenoid interrupted.

if i let the glow plug light go out then turn the key it doesnt crank at all. Glow pug supply could be on a timer, can be a bimetal switch. Battery drained - could be direct earth on glow plug circuit.
Make / break in circuit - eg wire on solenoid touches - gets warm - moves away. Vibration can cause make/break in circuit. Is damaged part of circuit can be supply or return. Corroded earth can cause this symptom.

I have cleaned the connections on the starter, battery, fuse box under the bonnet, even ran new cable from battery to starter, took fuse out for the glow plugs just in case there is a short in them but has made no difference.

it really does seam like an earth issue but it does the same even when i try and jump it from another motor.