I tried to communicate but somehow the message didnt go thru/

fuel pump does not run at all with relay installed - new relay, but runs with jumper

What sends signal to injector to fire? my injectors fire when 12v is applied to them, but not when cranking

I have a project '98 v70 that is now all together but need some tech advice on remaining issues - any hobbyists/mechanics in the King of Prussia/Devon area that want to assist? Regular shops wont help because car is too 'Old'

Hi - I've got a project car and there is an injector problem. When I test the injectors with 12v they all work, But when I crank the engine, they dont. Also even with new fuel relay, fuel pump only runs when I use jumper on relay power. Thoughts?

I checked all fuses.

OK so no love yet from several fronts. Fuel pump relay not working even with replacement, unless I jump terminals. Fuel injectors work with direct 12v power, but not when engine cranks. Starter sounds super slow and lethargic, but battery, terminals and wiring are good. I have a replacement starter ...

I have another 2 wire connector plugged into that valve - if I swap, then I'm still left with another extra connector I'll see where that one comes from.

Many thanks

I disconnected the coil wire for safety Its the small guage 2 wire connecter I need help diagnosing its function - black with white stripe flex wire sheath & blue tape in pic

All I took was engine block and head and turbo from 99 everything else is 98

The entire wiring harness from the 98 was intact and connnected - I may have some vacuum lines mixed up but I dont have any orphan wires/connectors except for one 2 pole by the coil. I've got a seperate query string on that - someone has said it was for a diagnostic? Its only about 8" long so i...