Glow plug lights arnt coming on please help out

[Aaron_Tupper]

The green light hasn’t came on since I bought the car a month ago but the orange light always has till now the car sat for a week without being started went to fire it today and the orange waiting light didn’t even come on. The car started but I had to crank like hell for it to fire. I checked the number 6 fuse and I chanced the big glow plug fuse in the black box and they’re both good. I hear people online talking and glow plug relays and glow plug timers but I don’t know if that would retaine to me. I also pulled the cluster out to check the bulbs and they are fine as well. Any sort of trouble shooting would help since the info related to these cars is limited. Thanks!

[gadget73]

The glow plug relay and timer are the black box. Its all internal to that. If you have power in at the large fuse (check with a voltmeter, just in case) and the fuse in the car that the lights run from, there isn't a whole lot else in there. There is a temperature sensor in the engine, and the module itself. I'll email you the Ford diagnostic manual for that, it covers the step by step diagnostics for the system but basically you're checking for power input, verifying the temperature sensor is good, and checking some grounds. It also goes over the wait to start lamp, though Ford doesn't use the green lamp so I'm not 100% the details on checking that. I presume its a matter of seeing which pin it comes out on and grounding it. Ford uses all but one pin in the plug, wild guess, that empty pin is what BMW used for the green lamp.

[danix]

If in doubt, I'd change the plugs - they are super cheap and not that hard to get to with the right sockets.
Or, you could pull yours and ohm them out. I'd change them.
It's unlikely to be the relay but I guess it's possible. I may have a spare.

[Aaron_Tupper]

If in doubt, I'd change the plugs - they are super cheap and not that hard to get to with the right sockets.
Or, you could pull yours and ohm them out. I'd change them.
It's unlikely to be the relay but I guess it's possible. I may have a spare.

But the fact that the light won’t light at all anymore that’s whats weird

[gadget73]

I think the wait light should come on even if the glow plugs are dead. The green light will not come on after if the plugs aren't all good though.

Its pretty easy to ohm the plugs out to see if they're bad though. Unplug the large connector on the glow plug module and read each pin from ground. It should read about a half ohm on each terminal. Any that read open indicate a bad glow plug.

Basically the big plug is to the glow plugs, the small one has the warning lights, temperature sensor, a lead to the starter, and a key-on hot. There is also a hot and a ground connection in there but I believe those bolt on. If those connections aren't good, it won't work either.

[Aaron_Tupper]

I think the wait light should come on even if the glow plugs are dead. The green light will not come on after if the plugs aren't all good though.

Its pretty easy to ohm the plugs out to see if they're bad though. Unplug the large connector on the glow plug module and read each pin from ground. It should read about a half ohm on each terminal. Any that read open indicate a bad glow plug.

Basically the big plug is to the glow plugs, the small one has the warning lights, temperature sensor, a lead to the starter, and a key-on hot. There is also a hot and a ground connection in there but I believe those bolt on. If those connections aren't good, it won't work either.

I’m just trying to figure out why the warm up light isn’t coming on at all can you send me
The link to the service manual you have and any suggestions on why the warm up glow plug light won’t come on at all anymore.

[gadget73]

I sent it to your email address. Did it not go through? If it didn't go through I'll upload it someplace and post the link.

[gadget73]

try this

http://www.grandmarq.net/gadget73/Ford% ... engine.pdf

[Aaron_Tupper]

try this

http://www.grandmarq.net/gadget73/Ford% ... engine.pdf

This is great! Try to email me again!