The V8 Owners Forum -

meanwhile, a doubt:

there is a MIL lamp in the dashboard? (RRC MY1990)

why is it not turned on in the car? and why is it on in rover gauge?

Hi,
today I have changed the TPS on my Range.

On rover gauge, MIL is off and i have no errors

But the problem of power is still here

what i have to do?

Keep looking. Clearly you have more than one fault!

Chris.

Ok

just to do it, i will check again the ignition timing

Hi,
I have a G4 halogen lamp like this:


(12V 10W)

is it ok to build a noid lamp?

thank you

I'd say not. It will take a lot of current to drive it, and may damage the injector driver. A small low current LED would be better. Also, a filament bulb won't show something flashing at speed like an injector

For the normal small LED you'll need a series 1000 ohm resistor. It will then draw about 0.01amp at 12v rather than the near 1 amp of your 10 watt bulb.

LEDs are polarity sensitive so need to be connected the correct way round.
Cathode is negative.

Ok, i will use a led

meanwhile, Meanwhile, the main relay can cause problems if it is damaged or not working properly?

I'm not that familiar with your injection, but on some Lucas injection the main relay is an oddball - it is a 5 pin with two outputs. Fit the common SPDT type and you have a problem. So I'd certainly make sure it is the correct one.

since i have the range i never touched this relè. It can be the original or not, that's why i have asked for problem on it

Relay contacts can be dirty (as can the terminals) - check the voltage drop across them with it in circuit.

Hi everyone,
today I have made others test

First of all, my hand-made noid lamp (with halogen) doesn't work properly...or i have no injectors that works

For second, on Rover Gauge the MIL now is ON, but i have no errors

relays looks good

next step is use a led to build another noid lamp, then i will check again fuel pressure regulator...other ideas?

thank you lot

I just did a little experiment to see if the fuel pressure regulator was good:

I disconnected the fuel line after the filter and I did run the pump with rover gauge to see how the fuel flows.

Next, i have disconnected the fuel line after the fuel pressure regulator and i did run the pump again and I noticed that the flow is slower.

So i think the FPR is ok...right?

anyway, the MIL is always on but i still have no errors

My advice is not to rely on computer diagnostics on a system this old and use traditional testing methods.

Which for things like the fuel pressure involves checking it with a pressure gauge. Pretty well everything else can be checked with a decent DVM. One with a dwell reading will also show injector opening duration.

I agree, but if you remember the first post ... I've checked or replaced everything I could. And the car continues to go wrong. If the noid test will say that the wiring is, I have also finished all the tests that you have suggested to me

What do you expect the 'noid test' to show you?