I mean after the engine has started.
I plugged a spare GP relay into my Dasher and added an LED to monitor glow-time... as described somewhere, my glow system stays energized about 180sec. ( Even with temp sensor wire grounded, initial glow <5sec.)
Relay: BOSCH 0 281 003 099
Anyone else have similar results?
How long does your GP relay post-glow or after-glow?
Moderator: Fatmobile
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- Turbo Charger
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How long does your GP relay post-glow or after-glow?
Have a nice day.
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
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- Turbo Charger
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Re: How long does your GP relay post-glow or after-glow?
I`m going to test mine out tomorrow when its like 40 degrees out. I have also been wondering about this as my previous car was on a toggle switch and this one starts easier and idles smoother probably because of the "post glow".
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- Turbo Charger
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Re: How long does your GP relay post-glow or after-glow?
I put a 50A strip fuse in the holder, to replace the wire bridge the PO had installed. A couple of tests revealed enough resistance in the connections to melt the fuse holder, but not blow the fuse.
I cleaned the connections, washers and fuse tabs to a sheen and tested again... a 3min post-glow gets the fuse terminals up to about 200F.
The post-glow does not get any shorter after the engine is up to temperature, so maybe the relay has to be replaced. I enjoy the smooth start and warmup, but the 3min glow every time I restart is not inspiring confidence.
I cleaned the connections, washers and fuse tabs to a sheen and tested again... a 3min post-glow gets the fuse terminals up to about 200F.
The post-glow does not get any shorter after the engine is up to temperature, so maybe the relay has to be replaced. I enjoy the smooth start and warmup, but the 3min glow every time I restart is not inspiring confidence.
Have a nice day.
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
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- Turbo Charger
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Re: How long does your GP relay post-glow or after-glow?
i know there is some 'post glow' to make sure motor runs during cold start, a few second sounds right not minutes.
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- Turbo Charger
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Re: How long does your GP relay post-glow or after-glow?
From what I have read the long style GP had little to no after glow with that relay. The fast glow ones had a short time of afterglow from what I have read. The later ones stayed on up to 2 minutes. I don't have any info to link but I remember many discussions about this and I think this was the end result.
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- Turbo Charger
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Re: How long does your GP relay post-glow or after-glow?
Yeah, I scoured the webz on the subject and it seems the longer post-glow is common on the TDIs, which may use PWM to drop the voltage during post-glow.
So far, it seems the GPs are handling the extended cycle, but the effect on their lifespan (and the entire circuit) is an open question.
So far, it seems the GPs are handling the extended cycle, but the effect on their lifespan (and the entire circuit) is an open question.
Have a nice day.
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
'91 Jetta ECOdiesel TD - clean & complete (less motor/tranny) for sale
'82 Westy Vanagon 1.9 N/A - 23.5mpg
'86 Jetta TD - 45-50mpg
'81 Dasher Wagon 1.6 N/A - 52mpg
'84 Wasserboxer - DOA, parts donor
'94 Passat wagon VR6
'03 Jetta TDI wagon 230K, 52.3mpg
'89 Jetta N/A - 51mpg
'82 Caddy 1.6 N/A - Sold
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- Diesel Freak
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Re: How long does your GP relay post-glow or after-glow?
I think vince Waldonmeister discussed this many years ago.
Try searching through his ramblings.
Try searching through his ramblings.
The center-core beam melter has been given a new lease.