Search found 7 matches

by Doni
Tue Apr 13, 2010 12:24 am
Forum: Electrical & Ignition Area
Topic: 3.9 EFi Wiring Help Needed Please
Replies: 8
Views: 2591

Mine is black/orange, But my donor range rover is from Canada so it may be different.

Just out of curiosity thev8kid, what will happen (or not happen) if this wire is not grounded?
by Doni
Tue Apr 13, 2010 12:21 am
Forum: Electrical & Ignition Area
Topic: 3.9 wont start.
Replies: 15
Views: 5327

Sorry, I forgot to mention I have spark, I have pulled each plug and laid it on top of the engine and they all have a good strong spark. -engine turns over nice and strong but wont catch -I have an inline pressure gauge installed and my fuel pressure is at the recommended ~37lbs -I have the fuel rai...
by Doni
Mon Apr 12, 2010 9:10 pm
Forum: Electrical & Ignition Area
Topic: 3.9 EFi Wiring Help Needed Please
Replies: 8
Views: 2591

It sounds like we have a similar issue at the moment, do your injectors fire at all? Mine give a little squirt at initial cranks but stop as the engine turns over. Is your loom from an auto? if it is the black/orange wire from the harness needs to be grounded via a 510ohm resister in order to bi-pas...
by Doni
Mon Apr 12, 2010 7:20 am
Forum: Electrical & Ignition Area
Topic: 3.9 wont start.
Replies: 15
Views: 5327

Heres where I am at now, it still WONT START. I have pin pointed the problem, when i turn the key to ignition the pump primes for 3 seconds, when it starts to crank the injectors all fire once, then nothing while the engine is cranking. when I stop cranking they fire once more. So, why aren't the in...
by Doni
Sat Jan 02, 2010 8:11 am
Forum: Electrical & Ignition Area
Topic: 3.9 wont start.
Replies: 15
Views: 5327

Right now I have my fuel pump wired to a switch, so I can turn it on or off. When connecting the pump using the white/purple wire from the pump relay it does not come on or "prime" at all -not sure what's going on here, will it cause me issues to run the pump separately? It's an aftermarke...
by Doni
Wed Dec 30, 2009 8:13 pm
Forum: Electrical & Ignition Area
Topic: 3.9 wont start.
Replies: 15
Views: 5327

Yes, the trigger wire (white, black) is connected to the - coil.

Ive checked the inline resistor and it is fine.

The group of grounds from the wiring harness were all attached right to the engine block. Is there more grounds I dont know about?

Thanks for the welcome and the help!
by Doni
Wed Dec 30, 2009 3:23 am
Forum: Electrical & Ignition Area
Topic: 3.9 wont start.
Replies: 15
Views: 5327

3.9 wont start.

I recently swapped a 90' 3.9 into my 72' series 3 88" The motor was running fine before when I pulled it from the range rover. I have the 4 main wires connected, 12V, ignition, fuel pump, and 510ohm ground (auto to manual trans). The motor turns over, there is spark and I have approx. 37lbs fue...

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