EFI V8 14CUX not cranking - solved

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dvollebregt

Member
Posts
13
Hi all,

I have a 110 with a build in 3.9 EFI, (Z gearbox).
After parking the car 2months ago I did not use it, now I try to crank it but it wont turn.

With help of the range rover 1992 14cux diagnose manual I try to get everything tested but now im lost.

so far done:
1. Battery check, was empty but now full again (y)
2. Manual starter engine via + cable at relay, starter engine turns but with key at position 2 not firing up (only start sound of fuel pump)
3. Relay tested, is ok.
4. Fuel pump is ok in position 2 and starts briefly waiting for signal of rotating engine afterwards.
5. Relais - signal is active when gearbox in P or N, when not in that position not active.
6. + key position 3, no signal at relays +
7. + key 3, no signal at ECU position 39, seems a bit of a different connector then shown in maunal, a bit more round not so square at picture, however same amount of pins.

I expect cable between key/ignition and ECU, however car is not starting when manually cranking at the relay. Or is this normal?

Help is welcome...
 
id check inhibitor switch on gearbox and its connector to the loom on top of bell housing, you can link the 2 wires at the connector that cuts out the starter
 
that was my idea, while checking the relay in the car, when changing gear it shifts the negative connection, so when in P or N earth is connected to the relay, as I understand, it does more and can block the ECU separately?
 
that was my idea, while checking the relay in the car, when changing gear it shifts the negative connection, so when in P or N earth is connected to the relay, as I understand, it does more and can block the ECU separately?
the starter circuit is separate from the efi apart from immobiliser will effect both
 
Hi James,

Is it this connector? Or is it really two cables, these are 4 cables? How to link it through?

Thanks
 

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I think i found it, cranking was blocked by old relays (hidden behind breaker board), seems they are corroded. I will get some and let you know.
It cranks again, so first issue solved! Now it does not start, so what more did the corrosion do.... This topic closed!
 
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