Help-Valve not stopping/draining battery

peters877 · Jun 3, 2011

Hi, Hope someone can help me. Has this ZT 1.8 for 2 weeks everything was okay but now the battery is draining. When I opened bonnet I could hear a high pitched whisltly sound and traced it to what appears to be a valve.
It is on top of the engine, R/H side as you look at engine, just below plastic cover with "Injection" on it. The valve is held in place by 4 star headed screws, electric plug on one end and rubber hose on other. If I unplug electric plug to it the high pitch sound stops, re-connect and it`s back again.
Can anyone tell me what this is, and how can i resolve it. I`m going away with car in 2 days so need it sorted if possible.
Thanks

ts autos · Jun 3, 2011

This is normal and will remain on for some time, how long is the important thing can you time it, as your battery drain may be elsewhere, have you checked for water in the plenum bulkhead as the power for the stepper motor comes from the ecu

peters877 · Jun 3, 2011

Hi, Thanks for that. Not sure how long, Was in work 4 hours yesterday, checked it and still making noise. So decided to unplug it, to save battery. Where is the plenum bulkhead for ECU.??

Pauliexjr · Jun 3, 2011

peters877 said:
Where is the plenum bulkhead for ECU.??

Rear RH side of the engine bay (looking from the front) have a look at post No.6 here http://forums.mg-rover.org/showthread.php?t=416529&highlight=plenum+drain+cleaning

It's basically a box under the windscreen where MGR in their wisdom decided to site the ECU. Unfortunately the drain at the bottom can get blocked by leaves and debris so the box starts to accumulate rainwater, if left long enough this can flood the ECU and that is an expensive fix!

ts autos · Jun 3, 2011

You have a problem if that's how long it's stopping on,
The bulkhead is under the wiper scuttle check that for water ingress

peters877 · Jun 3, 2011

would it be a fault with that valve/solenoid. If so, how much to replace and where can i get one. Can it be removed and cleaned, what does it do?

ts autos · Jun 3, 2011

I would check it's feed which is the ecu

Mr Edd · Jun 4, 2011

Check this thread out for info on Plenum drains ASAP... Click Me
Scroll down to post number 5

Edd

Help-Valve not stopping/draining battery

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