Looking for some help with my amal valve on my s1 rs turbo

only running 4/5 psi even with the amal unpluged its the same. When I start the rs it clicks once and when I rev the engine the valve clicks like mad I would say above 3000rpm. So I changed the valve for another one and still the same.

Ive checked the power to the valve and when its on tickover its about 1 vault and when you rev the engine it goes to 12 vaults.

Ive also followed the wire from the valve back to the ecu and that has consutility so no brakes in that.

I tried earthing it to the battery and it stops it clicking when I rev the engine so I took it up the road and it boosts upto 15psi.

Any help would be fantastic.

 

Sounds like the ECU is shutting it, IIRC this happens if it detects high ACT's, overboost, or on later S2's knock.
I would try another ECU and/or ACT sensor and see what happens.

 

Ok mate thanks my mate has a ecu I can try which one is the act sensor

 

Air charge temp sensor which goes in the charge carrier giles m8 i might have a spare act sensor as well as the ecu

 

I have already explained on another site that the Amal valve should not click constantly.

For this reason you need to check the wiring.

Going by what you have said there is an issue with the earth side of the amal valve wiring. Just put a wire direct to earth from the valve and leave the power as it is and see if that sorts it.

 

You did Jano and thanks. I said above that I put a earth direct to valve and it sorted it. So that is what led me to this post.

 

The valve fails safe, i.e. if it loses power you will not bleed off any boost, in other words you can only produce what your actuator will allow.

The valve has a permanent live, the earth is switched by the ECU, so an input is TELLING it duff info hence it's acting the way it is, I would check TPS output, a bad calibration can cause this issue on a Cosworth but not knowing MFI intimatly I can not say for sure.

When the valve has power it opens and allows boost to "bleed off".

Martin

 

Jano if he does that then he may just be masking a problem with the ECU, MAP sensor in the ECU or ACT sensor! Better to try another ECU (known working) and ACT sensor than just run a wire and bypass it.
If for example the MAP sensor is faulty then it will be fuelling wrong.

 

I picked up a ecu tonight of Jas swaped them over and its stoped clicking like mad it still has 1 click when you turn the ignition on. I think this has sorted it I will take it up the road tomorrw as its raining now lol

 

Just want to say a huge thanks Karlos I like to think I am good with rs turbos after owning 12 over the years but this one got me. Changed the ecu and its fixed the fault also fitted a -31 actuator and set the boost to 12 psi tonight and all is great just going to book it into woodford as they are 10 mins from me to checked over fueling wise.

And another huge thanks to milesy for letting me buy his ecu.

Its people like this that give these forums a great name Thanks

 

No problem mate, always happy to help and always best to fix a problem if you can rather than cover it up! Glad you got it sorted!

 

No problem giles m8