correct relay
Turbo Mini Forums

hi guys i posted a while ago about fining the wiring for the relay for the fuel pump.
After your help i found them so thanks now my problem is the relay i think i have the wrong one as when i put the ignition to the first position it cranks the engine.
could anyone send me a link to a site selling the correct relay or the type they have on their car. I bought under the impression it was a five pin change over relay but i think its the wrong type. Any help would be great.

cheers steve

can you post a pic of relay or make a diagram of how youve wired it up?

no longer a series, but still 1.3 turbo.

i wired it the same as a diagram i found one here drawn by bat i think. it is exactly as the diagram says its been checked by others to see if id done something stupid. so i just wondered if i could have got the wrong relay as it tries to start the engine when i put the ignition in the first position.

clearly it isnt wired correctly then !

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

well i have wired it as the diagram says it has been checked over and over. i was aking if somone could show me a picture of the correct relay? as i was sold this one as 5 pin change over and it isnt.

Edit* i'm so stupid

Does your car have a starter relay to energise the solenoid, or does it go straight from the ignition switch, to the solenoid?

Edited by Sprocket on 26th Apr, 2010.

it goes straight from the ignition to the solenoid.

then its wired wrong, we need to see how its wired to help show you where it is wrong


Or could it be a faulty ignition switch?

Edited by Sprocket on 26th Apr, 2010.

the car used to have the inner wing solenoid. But the new engine has pre-engaged so all the wiring was transfered to the front just extended the existing loom. I have all the correct wires as on the digram.
crank live, switch lived, constant live and oil switch but cant seem to get it right does this help you see where i am wrong?

If you cant draw a diagram, then please at least give us wire colours and to where they connect , to be at least in with a small chance of being able to help.

There should be no power on the white/red wire (white/yellow on some) on the first position on the ignition switch

ill get a drawing done! the car turns over with ignition as normal but when the relay is wired in it turns over on the first position its back feeding through the relay.

drawing i think.

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does this help.

Where is the fuel pump? and what is the relay amd its contacts.

TBH, you might be better getting an auto electrician to look at it

Not a single bit, as you havent identified any connections

And why on earth is the oil pressure switch going anywhere near a relay ???

In fact...what are you even trying to make the relay do ??

Edited by stevieturbo on 26th Apr, 2010.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

there is a diagram on here that i think bat put together i used this i cannot see what can be wrong with the wiring it has not been touched only the relay added into it. it works without the relay so must be right but when i put in the relay i get power going back to the solenoid in position one.

this is the diagram i used.

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on the origional metro turbo wiring im sure the fuel pump relay didnt energise unless oil pressure was detected, daft system..

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

it is to power the fuel pump it says oil pressure switch on the wiring diagram thats why it is going to it. does any one have a pic of their wiring or relay at all?

http://i153.photobucket.com/albums/s203/re..._pump_relay.jpg

http://www.polevolt.co.uk/acatalog/Fuel_Pump_Relays.html

this is what i wanted to know is it a certain type of relay because the ones on those sites arent just 5 pin change over relays?

Two points.....
Firstly I thought the Metro Turbo system that interlocked the oil pressure switch to the pump had to use a special oil pressure switch that worked in reverse to the usual switch
Secondly, if you changed to a pre-engaged starter motor and simply extended the existing wiring, you will eventually melt your ignition switch - the solenoid on the pre-engaged starter draws a lot of current so Leyland fitted an interposing relay when they fitted it to the Mini to prevent overloadiong the ignition switch. Leyland would only spend that sort of extra money if it wasn't going to survive the warranty period.

Schrödinger's cat - so which one am I ???

No, you use the standard oil switch for this system to work. but you need a normally closed contact in your relay.

However, it seems fooking obvious to me why your car is starting when you turn the ignition on. Who the fook checked this wiring???!!!

The diagram of the relay you got from TM is correct, but your wiring diagram looks nothing like this. For a start where is the fuel pump??

You seem to have connected the main feed to the solenoid via the relay contact. Assuming that you have a normally open contact (rather than normally closed), as soon as you switch the key, the relay operates and switches the solenoid, duurrrrr.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

yes thanks i know what is happening what my question was. is why are relays sold as 5 pin change over relays and it is clearly not could any one point out the correct one but i have obviously upset a few of you by asking an innocent question i wont ask for help again. in this case and would appreciate the school yard duurrrrs left out if thats what your thinking try and keep it to yourself im not an auto electrician and dont know much about wiring. thought you were the freindliest bunch to ask but im obviously not in the loop or something.

Regardless of what relay you have if it's wired to the diagram you have posted it won't work.

If you use a normally open contact then it'll crank when you turn the key. If you use a normally closed contact then it'll just keep cranking til the battery runs out UNLESS you turn the key.

It may be true that you only want to know about the relay, but that's not the problem. Whether the right or wrong type of contact is used it should never be operating the starter.

With the wrong contact worst case is that the fuel pump will fun constantly.

This is not a relay problem.

I know you're only after advice, but in this case you posts give me a feeling that you're not listning to what is being said and that you are very likely to do some serious damage to you wiring if you are not 100% sure about what you are doing.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph