|
|
|
#1
|
|||
|
|||
How does the older GP relay work
Switched to the fast GP’s last Saturday. Much better starts, but I also put in new (rebuilt injectors) so that may be some of it. I didn’t install the new relay that came with the kit after reading all the posts here, and not really having a clue about how to wire it in. The price of the kit was less than a relay so I can’t think it’s very good anyway. I didn’t throw any old parts away. So how does the old original relay work? Does it sense the temp of the plugs, or is it a timer? Plugs now glow quicker but it’s still about 15 seconds, and I wait until the lights off to start the car. Must be a temp sensor as they’ve always glowed for just a spilt second after the cars run.
By not putting in the new relay, am I throwing a strain on the electrics in any way?
__________________
89 300E 79 240D 72 Westy 63 Bug sunroof 85 Jeep CJ7 86 Chevy 6.2l diesel PU "The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane." Marcus Aurelius |
#2
|
|||
|
|||
I recommend that you install the new relay, otherwise you're just wasting your money on the kit. The relay in this kit is the same as the one you can buy by itself and the main feature of it is the afterglow (glow plugs keep glowing briefly after starting the engine). There is a temperature sensor that's bolted into the engine, but regardless of the sensor the relay will cut out after a brief time (about 30 seconds). You can hear this as a click.
__________________
2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL |
#3
|
|||
|
|||
Every diesel I've had before I got my benz, the GP would "cycle" on/off a couple times when engine first started. My benz GP light comes on when the key is first turned, I wait for light to go out then immediately start. After it starts, the glow plugs don't cycle at all .
Is this normal? Cheers, Bill |
#4
|
|||
|
|||
Yes that's normal. But the plugs don't stop glowing as soon as the light goes out, though they do stop if you start the engine unless you have one of these new relays. The light just indicates the recommended wait time before starting. With older relays, this recommended time is often too short so just let it glow longer before starting the engine.
__________________
2004 VW Jetta TDI (manual) Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL Last edited by DieselAddict; 10-19-2004 at 05:59 PM. |
#5
|
||||
|
||||
crash9,
I'm surprised you even need glowplugs where you live!
__________________
The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) |
#6
|
|||
|
|||
Quote:
Once again, THANKS!! Cheers, Bill |
#7
|
|||
|
|||
Quote:
Now I’m getting confused about the relay. The glow light does not stay on as long as it did with the old GP’s, so I’m assuming it is not a timer, but a heat sensor. Then again maybe I’m imagining things. I understand the afterglow thing, but also have read mixed ideas about whether that’s such a good thing. My concern is removing the ground strap on the new plugs – were the resistors on the old plugs insulated from the block? I’ve been around to many English cars to want to mess with the electrics too much. I guess the fuse strip would have blown if this weren’t proper – I’m also just a little paranoid by nature. I drive in the middle of no place most of the time.
__________________
89 300E 79 240D 72 Westy 63 Bug sunroof 85 Jeep CJ7 86 Chevy 6.2l diesel PU "The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane." Marcus Aurelius |
#8
|
|||
|
|||
Quote:
Never understood how positive can be ground.... Cheers, Bill |
#9
|
||||
|
||||
Quote:
They don't call Lucas "The Prince of Darkness" for no reason at all................... Ever hear the comment about British electrical systems being inferior to and at best equal to an elaborate system of Tallow candles?
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche Last edited by boneheaddoctor; 10-20-2004 at 03:29 PM. |
#10
|
|||
|
|||
Quote:
Not much wiring on a bike compared to cars so I guess bikes are fairly easy to convert because my buddys friend didn't charge much to do the conversion Cheers, Bill |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|