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Old 05-02-13, 19:54
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joncorry joncorry is offline
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T5 Post Icon Intermittent flashing coil lamp

Since the snow came the other week, the glow plug lamp flashes but not
all the time, now the check engine lamp is on, no reduction in power and no codes stored in the ecu? Anyone had this combination of odd things?
It's an 08 2.5 130, dpf removed and pendled...

RentaKampa here

Last edited by joncorry; 05-02-13 at 19:55. Reason: Stupid predictive text....
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Old 06-02-13, 06:46
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Willboff Willboff is offline
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Default Re: Intermittent flashing coil lamp

I had a loose wire which caused a flashing coil light and no fault codes, wasn't until I gave it a tug and it snapped that the check engine light came on and then a fault was logged. Did you test it before or after the engine light came on?
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Old 06-02-13, 07:14
rhino-wayne rhino-wayne is offline
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Default Re: Intermittent flashing coil lamp

Yes, had same situation, occasional glow plug light, then later engine light........took it to a local independent VW specialist..."hum strange no fault codes".......after fiddling about with some of the cable connections the engine light disappeared (after removing fault reader & restarting engine)????

The glow plug light has returned (motorway driving only) a couple of time since, still trying to figure it out!
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Old 06-02-13, 08:08
Partofthechaos Partofthechaos is offline
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Default Re: Intermittent flashing coil lamp

On other VAG cars I have had glow plug lights coming on while driving means you have no brake lights, might be worth checking?
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Old 06-02-13, 08:24
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T4 Post Icon Re: Intermittent flashing coil lamp

Quote:
Originally Posted by joncorry View Post
Since the snow came the other week, the glow plug lamp flashes but not
all the time, now the check engine lamp is on, no reduction in power and no codes stored in the ecu? Anyone had this combination of odd things?
It's an 08 2.5 130, dpf removed and pendled...
Could be 1) your brake light bulb has blown, 2) but I would guess its you brake light pedal switch, easy cheap fix however there are a couple of types, it simples unscrews half a turn from the top of the brake pedal once off you can se how many connections it has then replace it, its like a kind of rachet plunger thing. Good Luck
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Old 06-02-13, 08:25
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T4 Post Icon Re: Intermittent flashing coil lamp

http://www.justkampers.com/191-945-5...1990-2003.html

There you go if required !
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Old 06-02-13, 14:28
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Default Re: Intermittent flashing coil lamp

Had this problem on my 174 ,when it was very cold 2 years ago
Checked the brake light bulb it was loose ,it was just as you say glow plug light flashing now and them !!!
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Old 09-02-13, 11:15
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joncorry joncorry is offline
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Default Re: Intermittent flashing coil lamp

I've checked the brake light switch, works brake lights as it should. Removed brake light switch and checked for signs of wear inside it, all good.

Now when the coil light flashes, power is reduced, it wont allow boost. Yet when the coil lamp stops flashing, power restored.
Engine check lamp is sometimes on, sometimes not but has no bearing on the power.

Brake bulbs (non-led) checked and found to be working and tight in their housing.

Towbar wiring checked and found to be ok, no chafing and good insulated connections.

VAG Com cable sourced from forum member, just got to wait until her returns from hols before I can try looking into codes with a more specialist code reader than the one I already have.

Bloomin frustrating, sometimes there power and all is well, sometimes it feels like I'm towing a sherman.

It's now relegated to the drive... I wonder if mazda bongos/transits have these problems?

RentaKampa here
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Old 09-02-13, 11:50
bluezie bluezie is offline
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T5 Post Icon Re: Intermittent flashing coil lamp

VCDS diagnostics is definately the only easy way to repair these modern vehicles. They are so complicated, that to try and do it by old methods of multi meter and osciloscope etc would take forever.
Without this sort of kit, you can spend huge amount of time and money guessing, and repacing perfectly good components.
I'm sure when you get the VCDS on loan, all will reveal itself. Good luck!
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Old 21-02-13, 18:26
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Default Re: Intermittent flashing coil lamp

Got version 704 vagcom working on nieces laptop and pulled the following:
Address 01: Engine Labels: None
Part No S 070 906 016 EC H 070 906 016 DS
Component: R5 2,5L EDC 000SG 2539
Coding: 0000072
Shop #: WSC 66565

1 Fault Found:
001031 - EGR Potentiometer (G212): Signal too Low
P0407 - 000 - - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 1
Fault Frequency: 1
Mileage: 211401 km
Time Indication: 0

Freeze Frame:
RP 777 /min
Speed: 0.0 km/h
Load: 0.0 %
Lambda: -25.0 %
Mass Air / Rev.: 1100.0 mg/str
Mass Air / Rev.: 515.0 mg/str
Bin. Bits: 00000000

Readiness: 0 0 0 0 1

EGR needs looking at then...

RentaKampa here
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