LH 2.4 turbo injectors question.
 

Sorry, me again.
I now have a good spark on cranking (dodgy ignition switch contact pack), and can get it to run briefly on carb cleaner down the throttle housing.This means a crank position signal is getting through.Otherwise no joy.
Fuel pressure is there at the rail when the schrader valve is pushed.
Pump relay is new and both pumps run.Main pump is stock 200F but I have the 230ET one if needed. Should start on the old one surely?
There is a feed to both sides of the injectors by test light, cant see a pulse on cranking though.
200FT Green top injectors are fitted all at approx 2.5 ohms each. I have two resistor packs available to use, one was from the motronic 740 230ET donor car and gives a reading of 6ohms between each resistor and the centre terminal, and the LH one which is slightly higher at 6.5 ohms.I tried the LH one. Not 100% sure I have wired the resistor up correctly though.
there are 4x wires on the non ECU side of the inectors -red and black on the 240 LH NA loom- which i have cut the resistor wires into.
I used a radio suppression relay which should get a feed from the pump relay and coil 15 terminal?It seems a bit unnecessary.
I believe Classicswede has a bypass loom available for high resistance injectors.Are Turbo green tops high or low? Would this be an easier solution?
And does that radio relay really need to be there or could a simple switched feed from the pump relay to the injector resistor centre connector do the trick?
Sorry to keep wittering.
Thanks,
Jim

Getting there then...

The easiest solution is to leave the 240 n/a loom untouched and use high impedance injectors from a Volvo 850 t5.

The 940 turbo has low impedance injectors and a resistor pack. The n/a 240 with 2.4lh uses high impedance injectors, so no resistor pack in the loom.

The bypass loom from classic swede is just a connector with all the connections within it soldered together. If you have a 940 with a resistor pack that connector goes in place of the resistor pack so you can use high impedance injectors.

Try taking the fuel rail off and leaving the injectors connected to it, put each of them into a glass jar and then turn the car over- does any fuel come out?

The radio suppression relay is used in a 940s wiring, but not in a 240- how have you got the car wired up? Which loom are you using?

I can send you wiring diagrams for both a 240 and a 940 turbo if that’d help- pm me your email address.

Cheers

Thanks, have PMd you.
The car is fitted with the complete loom from a 1992 245 from a B200F car with LH2.4.
ECUs are1991 945 B200FT without immobiliser
0227400177(3531722) EZK and 0280000932 (3547772) LH

If you are running a 2.3FK the 2.0ft ecu won’t make it run well either, I had a 2.0ft ecu by mistake when I first did mine, and it ran terribly, it ran, but stalled all the time, and uneaven.

Tried a bit of "two steps back" fault tracing and fitted a set of N/A 240 injectors and bypassed the resistor pack in order to connect a known OK N/A ECU.
It starts and runs , albeit pretty rich by the smell.
So, set of T5 injectors coming and then I can try that 200FT turbo LH ECU again. Suspect I will need to find a correct 230 FT one though.
Jim

I've got a couple of ecus from 2.3 turbo 940s if you need one.

Aafter a bit of kind advice from Bugjam, I have fitted T5 injectors and done away with the resistor pack and radio suppression relay. It starts and runs pretty well now on a 200FT ECU, idle is high but speedo not connected yet which Im guessing is the cause.
Thanks 360 Beast for the offer of an ECU, I may well be in touch later depending how it goes.
Jim