sharkie
Member
In fact - with VAG COM channel 12 looks nothing like it does here. Mine has a stored value of 0. Measuring block 12 looks something like with the binary word, the time ins seconds, the voltage and the temperature.
How To extend glow time with Vag-com - ALH
- Thread starter Wingnut
- Start date
n1das
TDIClub Enthusiast, Veteran Member
- Joined
- Jun 11, 2002
- Location
- Nashua, NH, USA
- TDI
- 2014 BMW 535xd ///M-Sport, 2012 BMW X5 Xdrive35d, former 3x TDI owner
I know the VAG-COM mod to extend preglow time DOES NOT WORK on the BEW PD engine. 
I've already tried it. Measuring block 12 on the BEW PD engine in my 05 PD Jetta Wagen looks like what you've described. I expect that it will also not work on the 2.0 PD engine.
As far as I know, the adaptation only works on the ALH and older TDI engines.
I've already tried it. Measuring block 12 on the BEW PD engine in my 05 PD Jetta Wagen looks like what you've described. I expect that it will also not work on the 2.0 PD engine. As far as I know, the adaptation only works on the ALH and older TDI engines.
jhedrich
Veteran Member
coolant glow plugs
Is there a setting that can make the coolant glow plugs heat longer too? My car takes forever to warm up, but my sisters car heats up in no time at all. Hers is a 2003 mine is a 2000.
Is there a setting that can make the coolant glow plugs heat longer too? My car takes forever to warm up, but my sisters car heats up in no time at all. Hers is a 2003 mine is a 2000.
MyAvocation
Top Post Dawg
I am 99½% certain the 2000 ALH doesn't have a coolant glowplug (I know mine doesn't). And that model year does not have an extended glow time, as the 2003 does. Meaning, when the GP light turns off, so do the GPs. But newer models extend glow time to assist combustion (not sure if same is true for the coolant GP).
BTW, I want to thank the guys who came up with this mod. It works great during spring and fall temps.
BTW, I want to thank the guys who came up with this mod. It works great during spring and fall temps.
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chromeBuddha
Veteran Member
As I learned a few days ago, the auto tran TDIs don't have coolant GPs.
Brock_from_WI
Veteran Member
Yup, I was going to say auto trannies don't have the coolant glow plugs since they somehow extract heat from the trannie.
I did check and lengthening of the time does also effect how long the coolant plugs stay on after you start it as well. With the stock setting my coolant glow plugs go off about at about 90F and now mine go off at about 110F. And yes if my car has been sitting all day at 80F outside the coolant glow plugs do come when I start on and stay on until about 110F.
I did check and lengthening of the time does also effect how long the coolant plugs stay on after you start it as well. With the stock setting my coolant glow plugs go off about at about 90F and now mine go off at about 110F. And yes if my car has been sitting all day at 80F outside the coolant glow plugs do come when I start on and stay on until about 110F.
SheeB
Veteran Member
I am a tad confused here so I apologize up front if this questions is stupid
So if I go and increase my gp time say a couple seconds and the coolant is @ 0C will the ecu automatically use that setting as a reference point and increase the overall gp time as the temperature drops?
Example: So I change gp time to 3s @ 0C and the stock gp time @ -10C is 3s wil the gp time increase to something like 6s automatically?
Hopefully this makes some kind of sense to someone
So if I go and increase my gp time say a couple seconds and the coolant is @ 0C will the ecu automatically use that setting as a reference point and increase the overall gp time as the temperature drops?
Example: So I change gp time to 3s @ 0C and the stock gp time @ -10C is 3s wil the gp time increase to something like 6s automatically?
Hopefully this makes some kind of sense to someone
Brock_from_WI
Veteran Member
It's not really a time setting as much as a temperature setting. My understanding of this mod is what your telling the ECU is it is "x" number of degrees cooler then it thinks it is. So if it's really 32F (0C) outside the ECU might read it as 20F (-6C). Based on that temp it lengthens out both the pre-glow and post-glow for a given length of time.
I have been wondering if this effects the temp the car thinks it is outside once warm as well. So if its 100F does it think it's only 90F as well and not change the IQ as much?
I have been wondering if this effects the temp the car thinks it is outside once warm as well. So if its 100F does it think it's only 90F as well and not change the IQ as much?
rotarykid
Top Post Dawg
- Joined
- Apr 27, 2003
- TDI
- 1997 Passat TDI White,99.5 Blue Jetta TDI
IQ & ID & Timing are directly related air temp , fuel temp , water temp and altitude . The ECU has Fuel maps for variances in all .Brock_from_WI said:
SheeB
Veteran Member
So if I use a coolant heater currently how would this affect doing this adaptation for the gp's?
Brock_from_WI
Veteran Member
Assuming the coolant heater has warmed up the coolant and engine enough it may not run the GP's at all. I run mine for about an hour right now and two hours in the middle of winter and the GP's never come on since the engne is already warm. When I leave work at 25F they run for 10-15 seconds, they used to run about 5 seconds at this temp.
shanefoshia
Member
I live here in michigan and it has been cold out there and my 2000 jetta tdi was staring poorly and now After this adjustment Its working great. It was bad enough to light up the mil light.I checked the code that number 2 cyclinder was missing Intermidite. After she warms up she is fine. I am sill going to put some new glow plugs in her she has 130000 miles on her so she needs new ones. Now I have autotrans too i cant find any glow plugs for the coolent. I would love to have heat faster than i get. THANKS
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volkswarren
Well-known member
What other logon codes are there? 12233 doesn't work for me on my AEL (97) engine, yet it works fine on my brothers aat(95) and dad's (99)tdi's.
jasonTDI
TDI GURU Vendor , w/Business number
Autos don't need coolant GP's they warm up MUCH faster than the manuals due to the autobox heating up very quickly. Besides, you'd have to change your alternator too. You have 90amp and you need to go to 120.
red golf tdi
Vendor , w/Business number
Can the coolant glow plug's operating time be extended too?
TurbineWhine
Veteran Member
Change out your coolant thermostat. I have done this for several customers this winter and to my own car just last evening. My car went from 8 miles to reach normal operating temperature to 3.5 miles.jhedrich said:
TW
ChuckDubDub
Well-known member
Mine is a 2000, New Beetle. So if I set a lower number in the adaptation field, like 32650, but the "time" units still read 0, could that be an affect of my engine not being quite cold enough?
This is the case even though I shut off and restarted the ignition/ECU.
Thanks,
Chuck
This is the case even though I shut off and restarted the ignition/ECU.
Thanks,
Chuck
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NarfBLAST
Top Post Dawg
What the temperature say?ChuckDubDub said:
Wingnut
Top Post Dawg
Yes. The coolant has to be very cold to see a number other than zero in that field. If you set the adaptation at 32650, you will increase your glow time by about 5-7 seconds over what it would normally be at any given temperature. It will also decrease the threshold at which they start to glow. You just cannot see the results unless the coolant temp is low enough.ChuckDubDub said:
For example:
Before adaptation:
10*C (50*F) = No glow
5*C (40*f) = 2 seconds of glow
0*C (32*f) = 5 seconds of glow
After adaptation:
10*C = 2-3 seconds of glow.
5*C = 4-6 seconds of glow.
0*C = 6-8 seconds of glow.
Note: These are just examples for reference. Each car is different.
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Lug_Nut
TDIClub Enthusiast, Pre-Forum Veteran Member
- Joined
- Jun 20, 1998
- Location
- Sterling, Massachusetts. USA
- TDI
- idi: 1988 Bolens DGT1700H, the other oil burner: 1967 Saab Sonett II two stroke
Re questions about 1Z adaptation:
Depends on which ECU is installed. The original North American market 1996 Passat TDI ECU (with the BK suffix after the part number) does not support this adaptation. The 'smoke fix' replacement ECU (GQ suffix) might. The 1997 and later FA Passat and JB Jetta do allow this adjustment.
I've added a manual over-ride to allow me to power the glow plugs for as long as I hold the button. My BK doesn't allow adaptation. More importantly to me, the high percent of biodiesel I choose to use can benefit from heat assist at an ambient temperature where petrodiesel might not need and the stock ECU program doesn't activate the glow plugs.
Depends on which ECU is installed. The original North American market 1996 Passat TDI ECU (with the BK suffix after the part number) does not support this adaptation. The 'smoke fix' replacement ECU (GQ suffix) might. The 1997 and later FA Passat and JB Jetta do allow this adjustment.
I've added a manual over-ride to allow me to power the glow plugs for as long as I hold the button. My BK doesn't allow adaptation. More importantly to me, the high percent of biodiesel I choose to use can benefit from heat assist at an ambient temperature where petrodiesel might not need and the stock ECU program doesn't activate the glow plugs.
ChuckDubDub
Well-known member
As it turns out, it was definitely temp-related. We had a chilly morning, and the duration of the gp when I started was certainly up to several seconds!
Brock_from_WI
Veteran Member
Are you referring to the actual glow plugs or coolant plugs or both? The glow plugs run about as long after starting as they do before starting. The coolant plugs (only on manual transmission’s) run to about 90F or 32C with stock settings.
I believe the two times / set points are linked. So if you reduce this it will also lower the temperature set point the coolant plugs switch off after as well. The catch is if you lower it you might have an issue starting, or you might have to cycle them twice before a cold start. If it was just the coolant plugs you could just physically unplug one or two or all three. That shouldn’t affect starting in any way, it would just take longer to warm up because of the reduced load on the alternator and the obviously the plugs not warming the coolant. The mileage is reduced with a cold engine and emissions are also worse with the engine colder.
Out of curiosity, why would you not want the coolant plugs on after?
I believe the two times / set points are linked. So if you reduce this it will also lower the temperature set point the coolant plugs switch off after as well. The catch is if you lower it you might have an issue starting, or you might have to cycle them twice before a cold start. If it was just the coolant plugs you could just physically unplug one or two or all three. That shouldn’t affect starting in any way, it would just take longer to warm up because of the reduced load on the alternator and the obviously the plugs not warming the coolant. The mileage is reduced with a cold engine and emissions are also worse with the engine colder.
Out of curiosity, why would you not want the coolant plugs on after?
Bora-chiara
Veteran Member
I did the adaptation to 32700 the other day and came out of work tonight to a cold car and for the first time since i've purchased the car the glow plugs turned on. Never heard that relay and seen the dash lights dim a little bit like that. Started nicely, but adapted to 32650 any way because i'd like to have the plugs glow at a higher temp than they do and make a smoother start. REALLY happy with the results so far! Can't wait for tomorrow morning!
egibbys
Veteran Member
Huge improvement. I'll mess around a little bit and see if anything feels better than what I have.
ArturCosta
Veteran Member
Well I saw this mod when it was posted years ago but never needed this , here we get like 5 days per year under 8ºC and my car is in a garage so it ends up not that cold in the morning since I arrive ate 23h with a hot engine and it heats up the garage... so at 10h in the morning its like 3 to 4ºC warmer.
So the problem now is that with so much mods and a oil cooler it takes a lot of time to heat up... I was thinking on making some modifications like a switch to the coolant plugs but now I read they will come on also longer?
Brock_from_WI : did you notice it heats up better the coolant? Mine takes a lot time to get to 50ºC.. then it goes fast to 75 more less when the oil cooler thermostat opens and it goes slowly to the 85 I set for it (80ºC thermostat).
My car is a AFN 16bits ECU from 96... will it work?
Im also a chiptuner so will take some minutes to search this maps now
Regards,
So the problem now is that with so much mods and a oil cooler it takes a lot of time to heat up... I was thinking on making some modifications like a switch to the coolant plugs but now I read they will come on also longer?
Brock_from_WI : did you notice it heats up better the coolant? Mine takes a lot time to get to 50ºC.. then it goes fast to 75 more less when the oil cooler thermostat opens and it goes slowly to the 85 I set for it (80ºC thermostat).
My car is a AFN 16bits ECU from 96... will it work?
Im also a chiptuner so will take some minutes to search this maps now
Regards,
ArturCosta
Veteran Member
Just to say that it works on my car too.
Extended from 1.5s to 3.5s... 9ºC was doing 1.5s of glow. Changed to 32700 and will test ASAP. At least I was able to save and see the glow plug light come up a lot longer.
Regards,
Extended from 1.5s to 3.5s... 9ºC was doing 1.5s of glow. Changed to 32700 and will test ASAP. At least I was able to save and see the glow plug light come up a lot longer.
Regards,