st220kyle

I have a Ka which sometimes wont start, just turns over. I have found that the relay for the fuel pump isn't being triggered, so don't know where to go from here?
I've tested the relay and also tried starting with a spare key incase it was an immobilizer issue. Its a 2003 duratec engined ka and runs mint when it starts.

costina

iTrader: (1)

Usually a crank signal.

st220kyle

Possibly a dodgy crankshaft sensor then? Its not bringing up any fault codes either, it's odd as it starts fine 85% of the time, but every no and then it just turns over with no sign of starting at all.

big_wasa

The ecu switches the relay with a switched earh. When you turn the ignition on it will run the pump to prime the rail. It will then run the pump when the ecu senses it's turning over with the signal from the crank. The ecu also monitors the pump is running.

st220kyle

Ok, well when I turn the ignition on the pump doesn't prime, the relay doesn't click, what would you be looking at now? Cheers for the advice chaps,

RichieST

iTrader: (2)

I would be checking the ecu for power, could be a bad earth or a resistance in wiring. Check the fuse box as well for damp / corrosion, not uncommon!


When it doesn't start, is the red light by the clock coming on then going out as it should?

st220kyle

Ok cheers, not sure about the light by the clock as the car has started working again, I will have to check when it wont start again and report back.

stevieturbo

Check wiring, check relay.