www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI 101

TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

Reply
 
Thread Tools
Old January 22nd, 2019, 16:34   #1
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default Flashing glow plug symbol

Hey all. I hate being a bother but I hope you can help. It was -30 here and when I went to start my 05 jetta tdi the glow plug light was solid then started flashing it turned over very slowly then stopped. It wouldnt turn over anymore. I have the glow plugs I had the fault so I purchased 4 new ones. Also my battery didnt have the cold cranking amps I needed in our cold Ontario weather so I just purchased a new one and put it in. The glow plug light is still going solid then blinking and I believe this is stopping the car from turning over. Thoughts??

Last edited by Grapeape; January 22nd, 2019 at 17:01.
Grapeape is offline   Reply With Quote
Old January 22nd, 2019, 16:57   #2
KLXD
Veteran Member
 
Join Date: Aug 2009
Location: Lompoc, CA
Default

Never heard of a flashing plug light causing that. Sounds like a bad starter to me, maybe wiring.

Or a bad new battery. Happened to me once in sunny California. Installed it in the store's parking lot and nothing. Buggers wouldn't even hand me a new one. Had to do the warranty paperwork.

How about proof reading your prose?
__________________
Saying no to gas for 25 years:

Current: ’02 Jetta, Auto; ’98 Jetta, 5 Spd; ’98 Dodge, 5 Spd, SB, 4x4; ’84 Grand Wagoneer with Nissan SD33T, NV4500, Dana 300, Reverse Cut Dana 44, Dana 60

The Black Sheep (Only gasser): ’85 CJ, 4.2 w/4.0 Head and Mopar FI.

Past: ’85 Mitsubishi PU, 4D55T; ’81 Rabbit, 1.6; ’80 Dasher, 1.5; ’79 Rabbit, 1.5
KLXD is offline   Reply With Quote
Old January 22nd, 2019, 17:02   #3
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default

I dont think so. It just happened when it was so cold. It seems because of the glow plugs.
Grapeape is offline   Reply With Quote
Old January 22nd, 2019, 17:28   #4
AndyBees
Veteran Member
 
AndyBees's Avatar
 
Join Date: May 2003
Location: Southeast Kentucky
Default

I have no clue on the 05, but there is a long list of things that will cause the GP light to flash. I use to have the list. Seems MOGolf compiled that list. It may be in a sticky.

VW also used the "the flashing GP light" as an indicator something wasn't happy. Have you had it scanned with VCDS or something similar?
__________________
'84 Vanagon '02 ALH TDI engine Malone Stage 1 tune. CAT, SS 2" exhaust, E-vac system, DMF with upgrade pilot shaft, 4.57 R&P, fan assisted IC. (32 to 35+ MPGs consistently)

Last edited by AndyBees; January 22nd, 2019 at 17:46. Reason: Clarification
AndyBees is offline   Reply With Quote
Old January 22nd, 2019, 17:32   #5
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default

Yes I have the scan software on my laptop and I had the check engine light came on a while ago and I should have changed them then. I bought new ones. As for the scan it came back as 1 and 4 glow plug fault. And I've never had the coil indicator flash until it hit these really cold temperatures.
Grapeape is offline   Reply With Quote
Old January 22nd, 2019, 17:44   #6
AndyBees
Veteran Member
 
AndyBees's Avatar
 
Join Date: May 2003
Location: Southeast Kentucky
Default

Grapeape, this may not be applicable to your 05 .. (it does apply to the ALH engine)

MOGolf .......... credit to him. (this is a copy and paste from one of my posts back in 2015)

Causes of flashing glow plug light

00741 Brake pedal monitoring - implausible signal
01044 Control unit incorrectly coded
16705/P0321 Engine speed sensor - implausible signal
16706/P0322 Engine speed sensor - no signal
16955/P0571 Brake light switch (F) - implausible signal
17653/P1245 Needle lift sender (G80) - short to earth
17654/P1246 Needle lift sender (G80) - Implausible signal
17655/P1247 Needle lift sender (G80) - Open circuit/short to positive
17762/P1354 Modulating piston movement sender (G149) - electrical fault in current circuit
17969/P1561 Metering adjuster (N146) - control difference
17978/P1570 Engine control unit blocked
18020/P1612 Control unit incorrectly coded
18026/P1618 Glow plug relay (J52) - short to positive
18027/P1619 Glow plug relay (J52) - open circuit/short to earth
18040/P1632 Accelerator position sender - voltage supply
17970 - Quantity Adjuster (N146): Upper Limit Reached
P1562 - 35-10 - - - Intermittent

It also flashes when an interface tool has put the ECM in 'basic settings' mode.

There may be more; these are the ones I found documented.

The brake light monitoring includes the clutch switch (manual transmission cars). It also includes a possibility of blown brake light bulbs

__________________
'84 Vanagon '02 ALH TDI engine Malone Stage 1 tune. CAT, SS 2" exhaust, E-vac system, DMF with upgrade pilot shaft, 4.57 R&P, fan assisted IC. (32 to 35+ MPGs consistently)
AndyBees is offline   Reply With Quote
Old January 22nd, 2019, 17:51   #7
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default

I'll have to scan it again tomorrow in the light. I believe it was the 18027/1619
Grapeape is offline   Reply With Quote
Old January 22nd, 2019, 18:00   #8
Fahrvegnugen
Veteran Member
 
Join Date: Jan 2017
Location: Burlington Vt
Default

I guess Battery, ground or electrical problem, is the glow plug harness good? Reading Andy’s list makes me think of a bad cable or ground connection, or wires shorting out.
Fahrvegnugen is offline   Reply With Quote
Old January 22nd, 2019, 18:20   #9
Vince Waldon
Veteran Member
 
Vince Waldon's Avatar
 
Join Date: Apr 2009
Location: Edmonton Alberta Canada
Default

The flashing glowplug light means the ECU has detected a "fix me now!" problem NOT related to the glowplugs (dunno why VW chose to use the glowplug light).

Scanning with a good VW-specific scanner is the best next step.. .if there are a bunch of codes clear 'em and see what comes back.
__________________
Vince Waldon Edmonton AB Canada

Note: The above is to the best of my knowledge- but at the end of the day simply interweb opinion, worth EXACTLY what you paid for it, and if used done so at your own risk.
Vince Waldon is offline   Reply With Quote
Old January 22nd, 2019, 19:03   #10
Fahrvegnugen
Veteran Member
 
Join Date: Jan 2017
Location: Burlington Vt
Default

Oh that’s right Vince. I recall it getting cold and my glow plug lights would flash and ding and my headlights would turn off. I replaced my battery cables and it never did it again.
Fahrvegnugen is offline   Reply With Quote
Old January 22nd, 2019, 19:52   #11
jokila
 
jokila's Avatar
 
Join Date: Dec 2004
Location: Houston, Texas
Fuel Economy: 52/45/40
Default

Quote:
Originally Posted by Grapeape View Post
I dont think so. It just happened when it was so cold. It seems because of the glow plugs.
Cranking of the engine is unrelated to the glow plugs. You have a power problem in starting the car. Check the wiring and grounds. Is this a manual car? Anything related to the starting system can be suspect. Did you check the voltage of the battery before deeming it a failure?
__________________
Ventecomy | Heated seat lighted switch | W8 light |
Blue tint aspherical tinted mirrors | Turn signal convenience | Euro Light Switch | Rear Fog Light | DrawTite Hitch | HIDs | 520 injectors | Engine Cover mod light |
VCDS-HEX/CAN & VagTacho available Houston metro area.
jokila is offline   Reply With Quote
Old January 22nd, 2019, 19:55   #12
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default

Yes the battery was shot. And yes it's a standard.
Grapeape is offline   Reply With Quote
Old January 24th, 2019, 14:48   #13
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default

Update. I just got a new odb scanner to work with my phone. The only stupid thing I did in a hurry to get it fired up was clear the codes before I saved them. I believe it said it was a 7036 or 7042 powertrain fault code. There was 4 of them. I cleared them but it still wont turn over. Any thoughts. The glow plug light is working normal now. I did replace all 4 of them.
Grapeape is offline   Reply With Quote
Old January 24th, 2019, 15:17   #14
jokila
 
jokila's Avatar
 
Join Date: Dec 2004
Location: Houston, Texas
Fuel Economy: 52/45/40
Default

Quote:
Originally Posted by Grapeape View Post
Update. I just got a new odb scanner to work with my phone. The only stupid thing I did in a hurry to get it fired up was clear the codes before I saved them. I believe it said it was a 7036 or 7042 powertrain fault code. There was 4 of them. I cleared them but it still wont turn over. Any thoughts. The glow plug light is working normal now. I did replace all 4 of them.
The codes will come back if the engine is started, but if you are getting zero cranking then you have to look into the starting circuit, from ignition switch to lines that feed power - not necessarily in that order though. eg: clutch safety switch keeps the starter from engaging.

You might try bypassing the starting circuit by jumping the power to the starter. If that works, you would need to figure out the circuit and isolate where the failure point is located.
__________________
Ventecomy | Heated seat lighted switch | W8 light |
Blue tint aspherical tinted mirrors | Turn signal convenience | Euro Light Switch | Rear Fog Light | DrawTite Hitch | HIDs | 520 injectors | Engine Cover mod light |
VCDS-HEX/CAN & VagTacho available Houston metro area.
jokila is offline   Reply With Quote
Old January 25th, 2019, 09:24   #15
Grapeape
Newbie
 
Join Date: Oct 2018
Location: Ontario Canada
TDI(s): 05 jetta tdi
Default

Any idea if there is a way to bypass the clutch safety switch or diagnose it.
Grapeape is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
electrical short no brake lights blinking glow plug symbol FL/COtdi VW MKIV-A4 TDIs (VE and PD) 2 July 25th, 2014 16:57
Flashing glow plug symbol Robert Lerch TDI 101 18 January 21st, 2009 16:57
Flashing Glow Plug Indicator flashing while drivin Bob Allen VW MKIV-A4 TDIs (VE and PD) 2 October 29th, 2003 04:46
Glow plug symbol parkcity TDI 101 5 November 22nd, 2002 10:46
no glow plug symbol? indigo99golf VW MKIV-A4 TDIs (VE and PD) 3 March 18th, 2002 01:44


All times are GMT -7. The time now is 12:36.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
© 1996 - 2017, All Rights Reserved
Page generated in 0.17932 seconds with 11 queries
[Output: 127.29 Kb. compressed to 106.21 Kb. by saving 21.08 Kb. (16.56%)]