Hello again, I have yet another problem with my car, as I've come to expect it now.

I changed the glowplugs on my car yesterday, which was not as difficult as I thought it would be. Wire them up, and the car started fantastically (Better than ever). Drove it around, the car was great to have running again after replacing a whole bunch of stuff.

However, this morning, I went to start the car, and the glowplug light did not come on. I was immediately concerned. I checked the wiring, which was fine, I checked the connections, the battery, turned the key many times, but no light.

I thought that maybe, one or two of the connections was backwards and worked to reconnect everything. This did not work. When I rewired a glowplug backwards, every time the cylinder with the backwards connection turned over (when I was cranking the engine), it made a snapping sound, which was bad. However, I did get the glowplug light on when the connection(s) were backwards. After about 2 hours of re-rewiring, I got it back to normal. It cranks, no snapping, but no glowplug light, and it doesn't start.

What did I do wrong.

Check the GP relay and check the strip fuse in the GP relay.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Since you said "I thought that maybe, one or two of the connections was backwards and worked to reconnect everything."
I am guessing that you have the older Loop/Filiment type Glow Plugs. Otherwise I do not see what could get connected backwards.

If you do not put your year and model in your signature you will need to post that info each time you start a thread; or the answer you get may not match your question.

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84 300D, 82 Volvo 244Gl Diesel

um... snapping sound? ... wtf?
I'm gonna need more info on this one.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

What exactly is a GP relay?

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1980 240D - 275,000 KM

GP = Glow Plug

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

its the black box located on the driver side front fender/wheelwell. If you take it apart there is a strip-type fuse on the top of it that can burn through if you wire it up wrong, or just from old age sometimes. You should be able to trace the glow plug wires back to the relay box.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Rule #1
You might want to tell us what type of car this is on. Year and model please.....

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Glow plug relay is new, mechanic had an extra, and I swapped it. Problem not solved.

Actually, with some investigating, I think I know the problem.

The ground wire (after the fourth cylinder) looks old and frayed. I moved it around a bit, and there was a bit of sparking, so the connection looks bad.

Where can I find a proper ground wire, because I tried splitting it, and I failed.

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1980 240D - 275,000 KM