Omega Owners Forum
Omega Help Area => Omega Electrical and Audio Help => Topic started by: Vulpine on 11 August 2011, 08:43:56
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HI
My 2.5td 1997 omega diesel has suddenly, ie no build up, starting really struggling to start when cold. Takes about 3 to 4 mins of turning the starter almost continuously to get her going. Hot starts fine.
I suspect fuel supply and/or the glow plugs. WDYT?
So can anyone tell me which fuses and relays control the fuel pump and glow plugs?
I will check the fuel pump this evening to see if it primes but would great to check the electrics first.
thank you all
Jon 8-)
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Oh and i will be doing a paperclip test at lunch time. :)
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Ok
checked fuse no18 under dash (fuel pump) and its ok
checked large black fuse (combined with relay) in engine bay and thats ok
done paper clip test and it shows code 49 - Glow Device General Error :(
anyone know which bit this means is broken? and what needs replacing?
thank you
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Possibly time for a new set of glow plugs
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hmm very sudden though?
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anyone got instructions on how to replace glowplugs?
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Inlet manifold off (may need to replace paper gaskets Vx part no 90509135 x 6) probably cheaper from Land Rover dealer.
8mm spanner to undo the nuts holding wiring, 12mm deep socket to do plugs,
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thank you so much for all your help
Jon
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Don't use cheapo plugs whatever you do. >:(
I've used NGK on several and had no problems.
A 12mm hexagon (not bi-hexagon) 'deep' socket will be your best friend to remove/refit 'em! :y
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what is wrong with the cheap plugs?
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Before you start changing glow plugs, check the GP relay as the 2 contacts can start to arc and be intermittent.
On top of the relay theres a multi pin plug, with six black wires going to each plug, should be 12 v on each while the GP dash lamp is on and 12v stays there for about 5 secs after the light goes out.
Theres also a heavy fuse that's screwed down with two screws in there as well.
Pull the multi conecter off and measure each plug to earth each plug should read 1 to 2 ohms.
Chris.
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hi zirk
i did consider the relay. Is it serviceable?
Any ideas on cost for it?
I have replaced the plugs. Looks like only 2 were working anyway so needed doing.
thanks
Jon
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hi zirk
i did consider the relay. Is it serviceable?
Any ideas on cost for it?
I have replaced the plugs. Looks like only 2 were working anyway so needed doing.
thanks
Jon
Sort off, as a temp fix, if its arced across you can carefully file it back again.
Its a BMW part, so could be sourced from BM, Freelanders as well as Vauxhall breakers or second hand suppliers.
Some pics and Part number here, the post doesn't relate to your problem, but gives an idea to the relay etc.
http://www.omegaowners.com/forum/YaBB.pl?num=1215886367/10
Chris.
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Nice one Zirk
Just out of interest, as i am awaiting for the corporate snail that is Vauxhal to deliver some parts to finish the repair off, I am currently driving around in my Omega with NO inlet manifold. Its very smooth if a little slow (due to no turbo boost). Amazing what a diesel engine doesn't need to to work!.
Pics later.
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Nice one Zirk
Just out of interest, as i am awaiting for the corporate snail that is Vauxhal to deliver some parts to finish the repair off, I am currently driving around in my Omega with NO inlet manifold. Its very smooth if a little slow (due to no turbo boost). Amazing what a diesel engine doesn't need to to work!.
Pics later.
Must admit Ive driven cars with some bits missing, or even missing Tax or Mot in the past, but never without an Inlet Manifold, lol. :D
Wouldn't advise you do it for too long with the amount of crap that gets thrown about on the roads, the last thing you need is your Head and Valves trying to chew bits of grit or stones while its sucking air in.
;)
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indeed, but all sub 30mph 1.6miles to work for today and tomorrow only.
maybe if weather is ok, i'll get the push bike out even to be on the safe side!!
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Hi All
Car still going well but need to know which relay is the Fuel Lift Pump Relay. Can anyone tell me which one it is?
Want to bridge the relay so the lift pump is always on (with engine) and/or a switch on the dash.
Thanks
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HI
Ah sorted! If I only read things properly first time! Using the H@ynes and info on here, for the 2.5td:
With reference to:
(http://images.omegaowners.com/images/techinfo/enginerelaybox/2-2.jpg)
Pos Code Colour Option Function
1 - Violet Test Connector
K96 Grey Cooling Fan
2 K97 Black Headlamp Washers
3 K22 White AC Coolant Pump
4 K8 Yellow Wipers (int)
5 K127 Green Without Aircon Charge Cooler
K60 Green With Aircon Aircon Compressor
6 K26 Grey Without Aircon Blower
K87 Green With Aircon Aux cooling Fan
7 K67 Green Without Aircon Cooling Fan
K51 Black With Aircon Cooling Fan
8 K48 Orange Aircon only Blower
8a F50 Red ?? ??
9 K80 Green Fuel Filter heater
10 K16 Black Lift Pump (in fuel tank)
12a F39 Green Headlamp Washers
17 K52 Brown Blower
18a F42 Black ?? ??
F50 Blue ?? ??
18b F52 Black Without Aircon ??
19a F36 Green ?? ??
20 K13 Green Park/Neutral (AT)
27a F55 Yellow ?? ??
28a F42 Black ?? ??
28b F52 Black ?? ??
30 K25 Glow plugs
40 K17 Polarity Protection
Anyone help with filling out the ??s for the fuses?
My interest is item 10, the fuel relay. Time to mod that circuit!
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with reference also to:
http://www.omegaowners.com/forum/index.php?topic=90451.msg1155234#msg1155234 (http://www.omegaowners.com/forum/index.php?topic=90451.msg1155234#msg1155234)
Fuse 18 for fuel pump
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Well on checking circuits, fuses and using test lamps, 12v is supplied to the pump whenever the vehicle ignition is on.
But i have no flow of fuel when there is :(
I have 12v to the top of the tank connector, so next job is to remove the pump from the tank (again) and see whats up.
anyone got a spare going for sale?