We've made our own glow plug harness.
Basically one for the left and one for the right row.
Reason for this was that my '94 idi has a hard start when cold.
Glow plugs are new. (Beru)
Glow plug controller is new (Motocraft)
No air intrusion anymore (https://www.oilburners.net/threads/e350-idi7-3-fuel-sending-unit-air-intrusion.91338/post-1103580)
Battery cables and connectors are new. Batteries have 13.6V
IP timing is fine.
After the "wait to start" sign went off, the controller started clicking for the next 15 secs and firing up the engine was horrible.
The glow plug harness was for me the last possible source of the problem. (the female cable plugs for the glow plugs were replaced in 2019/20 because the original ones didn't keep the contact anymore)
The harnesses are 2 symmetric sets.
one main cable goes to a distributor (https://de.wikipedia.org/wiki/Federkraftklemme),
which looks like this: https://commons.wikimedia.org/wiki/File:Wago_221-413_splicing_connector_with_stranded_wire.jpg
and from there 4 separate cables go to each glow plug.
After connecting them, we wanted to start the engine. But when turning the key to "run" position, the "wait to start" light didn't flash.
Also the controller didn't start heating the glow plugs.
All fuses are fine. The controller receives power.
When then turning the key to ignition, the engine wants to fire up.
Now, my question is: why does the controller not heat the plugs?
I am assuming that the controller measures the cable resistance and it thinks, that the engine is warm.
Can this be?
Basically one for the left and one for the right row.
Reason for this was that my '94 idi has a hard start when cold.
Glow plugs are new. (Beru)
Glow plug controller is new (Motocraft)
No air intrusion anymore (https://www.oilburners.net/threads/e350-idi7-3-fuel-sending-unit-air-intrusion.91338/post-1103580)
Battery cables and connectors are new. Batteries have 13.6V
IP timing is fine.
After the "wait to start" sign went off, the controller started clicking for the next 15 secs and firing up the engine was horrible.
The glow plug harness was for me the last possible source of the problem. (the female cable plugs for the glow plugs were replaced in 2019/20 because the original ones didn't keep the contact anymore)
The harnesses are 2 symmetric sets.
one main cable goes to a distributor (https://de.wikipedia.org/wiki/Federkraftklemme),
which looks like this: https://commons.wikimedia.org/wiki/File:Wago_221-413_splicing_connector_with_stranded_wire.jpg
You must be registered for see images attach
and from there 4 separate cables go to each glow plug.
After connecting them, we wanted to start the engine. But when turning the key to "run" position, the "wait to start" light didn't flash.
Also the controller didn't start heating the glow plugs.
All fuses are fine. The controller receives power.
When then turning the key to ignition, the engine wants to fire up.
Now, my question is: why does the controller not heat the plugs?
I am assuming that the controller measures the cable resistance and it thinks, that the engine is warm.
Can this be?