clivebrown
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Posts posted by clivebrown
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Yeah I downloaded various troubleshooting guides, I have fuel at the cold start. I think I need to get rail off and at least one injector out. I don’t hear the injectors click....
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I’ve jumpered out the over run relay so there is a feed there, I’ve ensured there is a 12v ignition feed at cranking, red white wire. I’ve tried a handheld oscilloscope on the pin 1 today, it appears to be a regular signal......run out of ideas...I was trying avoid buy a recon Ecu, like I said I had two but you never know if they are both broken...the plektron relay has current coming out both side to power fuel pump. Fuel pump runs with flap open (hear it). I think next is to remove plenum and get an injector out, try and manually pulse one.
im not convinced there wasn’t an alarm / immobiliser before, someone has cut one out I think and it looks likes they put the wires back together....current have the dash in bits chasing wires....
any other ideas gratefully received...this bugger won’t beat me!!
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Indefinitely have continuity, and spark, the engine fires with fuel sprayed in and tries with fuel from the cold start...just not firing injectors. Oscilloscope (cheap one) turned up today, I’ll see if that can pick the pulse and dwell time....
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How do I test the pulse from -coil? I get a steadish 10v at pin 1 it doesn’t fluctuate much.... what should it be whilst cranking manual suggest fluctuate between 6-9volts...
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Hi I have a rrc 3.5efi, I bought it as a none runner that had been on carbs but the bloke had reinstalled the efi system. I found the resistor pack was missing and bought that (treated it with ohm meter all is fine). Changed the coil, tried a different MAF. The engine turns over and fires fine when fuel is sprayed in to plenum chamber. Fuel pump works. I have power to injectors, but they don’t fire, I have jumpered out the fuel over run relay and the resistor is inline. I have continuity tested the b/w wire to pin1 on the ecu and it reads fine.........but the injector don’t fire, Ive tried a noid light...nothing...I guess I’m not getting the pulsed earth to trigger....is this an ECU issue? I have another ecu and have tried that but got the same results. Is there anything else effecting the pulse on pin1?
Help is gratefully received...enjoying the process...but its getting a bit wearing now!! Ive been up and down all the forums...
Clive
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Hi All, Ive entered the world of RRC, I've never worked on a v8, (only diesel defenders). I want to restore this 1987 3.5vogue to std, there is minimum rust, but the efi had been removed before. It has been put back on, but the throttle linkages aren't connected. I have two cables, one the accelerator and another that I don't know what it's for. Does anyone have a good clear picture of the linkages connected? Cheers Clive
Range Rover classic 3.5efi flapper won’t fire injectors
in Range Rover Forum
Posted
There is pulse to pin1 ecu from -coil checked with handheld oscilloscope. But the noid light shows the that the injector isn’t pulsing. I was wonder if the injector circuit is as simple as coil pulse to pin1, power to resistor pack to injectors. Or whether there is another requirement at the ecu for the injector pulse to create the earth??