V8! Had a Gut Full

[bambamjj]

Well thats it! she keeps on cutting out intermitently changed Ignition module leads coil dizzy arm & Cap leads Plugs.  and now fuel filter.

Can not make it cut out just does it when it wants too.  Runs like a dream then for 1/2 mile runs lumpy as any thing then back to normal, cuts out with Orange light on dash coming on with "!" on it then light goes out and she runs ok again :x

So into garage she went V8 EFI specialists in stubbington Hampshire but they cant find anything tuned it and changed Fuel filter as above, drove away tonight and 10 yards down the road she cuts out again  :x

*$%k it! at moment she is going for scrap!!!!  :x  :x  :x  :x

Any ideas before i take grinder to her?  :x  

Please?

[chuggaman]

i had a problem on my old v8 that was similar....

it all happened when i was giving it new plugs leads and rotor arm.....

when i took the rotor arm off i had (unknown to me) broken a bit of plasticoff it which fell inside the distributor..

this then damaged the bottom plate which is connected to the module..

i changed all that could be changed within the distriburor.....i got spark but she would not run for long...

when i changed the whole distributor for a second hand one all was cured..

i am not a mechanic and dont want to give you false hope .....

just telling what happened to me and howit was cured!!


mike

[bambamjj]

Stripped the dizzy when i put the ignition module on but still no change.  :?  :x

[josh 109]

my dad had a simalar problem with his 3.9 rrc it took him ages to sort it out .
http://forums.mud-club.com/viewtopic.php?t=18993&start=0&highlight=

[Range Rover Blues]

The orange ! is the ECU warning light, it should blink on as you crank it up then go out, perhaps there is a wiring fault so the EFi is turning off momentarily, otherwise you have an intermitant fault in the EFi somewhere.  Trouble is I don't think there is a log for fault codes.  Try a S/H ECU for a few days.

[Kenny]

Try changing/cleaning the AMP for the coil. This is bolted to the body, right where it can get really, really wet. If you off road or get wet try this. Had the same problem myself, spent hundreds trying to find out, replacing bits and bobs all over the show and that was what it was.

Damian

[bilge rat]

so it  doesnt start when the orange light is on ?, but as soon as it goes out it fires ? alan.....

[Range Rover Blues]

Yeah, that's how I read it.  Is it Hot wire or flapper EFi as the former will run with certain fault the later could not tolerate.

Things like throttle sensor/air flow have redundancy (air flow is temoremental though)
Has it got lamda sensors?

Whatever it is it's the worst type of fault to tracem, an intermittant one. Is it getting slowly worse?

[petergalileo]

Have heard this sort of problem happens with non-landrover rotor arms.  Apparently some pattern parts have a thinner contact at the top and it sometimes causes the spark to travel back down the arm and earth itself inside the dizzy.  Once the arm is changed for the land rover part with the thicker contact the problem is cured.

Just an idea.

[Spooky]

A mate of mine's having very similar symptoms on his '91 registered V8i - he's discovered that by disconnecting the fuel temperature sensor, the car runs fine ... :-k