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Old 07-07-2018, 04:28 PM   #1
benvvc
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Default Revving!!

Onto my 2nd problem. Mems2 vvc. Upon starting the car the engine isles around 1k. But once the throttle is pressed the revs stay around 3k and sometimes rise to 4k. I've checked the inlet for vacuum leaks, I've removed the iacv and cleaned it. Took the throttle body off and cleaned it. I dunno where to look next. The car is driving me mad . Took all this time to get it on the road and now it's like it prefers being unused in the garage lol.

Just 1 thing going wrong after the next
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Old 07-07-2018, 04:45 PM   #2
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Did it work ok at any point since being in the Mini?

If yes, then likely a component failure.

If not then more likely wiring.
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Old 07-07-2018, 04:51 PM   #3
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Yes worked ok in the mini b4. Just since it's been mot'd and used on the road it's started being a dick!

Which components are we talking about? Iacv. Tps????
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Old 07-07-2018, 06:06 PM   #4
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Default Revving!!

The IACV are prone to being assholes, Andrew knows, his likes to decide every now and then wether or not it wants to work or not.
Do yourself a favour, when itís revving high, squeeze the hose to clamp it shut on the IACV and see if the revs drop back down.
Also when you switch the engine off can you hear it reset? Does it sound like a smooth whine or does it click?


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Old 07-07-2018, 06:50 PM   #5
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What should it do? Hard to hear over 3-4k of revs lol
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Old 07-07-2018, 06:54 PM   #6
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I've just clamped the hose shut and the revs dropped. And when I switch it of it whistles down. Can you make sense of this for me please???
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Old 07-07-2018, 07:20 PM   #7
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I would say the IACV is sticking open.
You need to unclamp the IACV and have a close listen as someone switches off the ignition for you is easiest, you should here the IACV motor as it resets itself, if it sounds like a clicking then itís jammed.
Your better off just replacing it, sometimes they come unstuck, but they donít last long before they stick again.


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Old 07-07-2018, 07:26 PM   #8
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Il get 1 ordered. Cheers for your help
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Old 08-07-2018, 02:46 PM   #9
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Try disconnecting the throttle cable first and revving without it. A kinked cable inner caused me all sorts of ballache that was just like this, eventually diagnosed by Dan.
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Old 08-07-2018, 07:08 PM   #10
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Still revs high without the cable attached. Cable was my first thought. Cheers for your input.

Any ideas of best place and price for the iacv??
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Old 08-07-2018, 07:15 PM   #11
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Still revs high without the cable attached. Cable was my first thought. Cheers for your input.

Any ideas of best place and price for the iacv??


Just before you do, you could try resetting the TPS.
https://youtu.be/WN1CLldffDo


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Old 08-07-2018, 07:21 PM   #12
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After youíve tried that then I would say your not going to find a new one cheaper than this:
https://rover.ebay.com/rover/0/0/0?m...2F162577659316


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couldnt be bothered to stretch that far to pull it out.
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Haz obviously don't like custard , my Mrs spits it out to!
I love it
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Old 08-07-2018, 08:13 PM   #13
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Il try the reset tomorrow. That iacv is different to mine. Mine has a square plug with 5 wires going to it. Il have a look on eBay. Big thumbs up for all the replies
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Old 08-07-2018, 08:20 PM   #14
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This type?




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Haz obviously don't like custard , my Mrs spits it out to!
I love it
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Old 09-07-2018, 08:27 AM   #15
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Ben is right. The link Dan posted is a MEMS 3 one. You want the earlier MEMS 2 type with square plug.

In last 2 years, I have had 3 of these. I have to say though, my fast idle was only about 1200rpm.

To test for leaks, I dribble water over any suspect area. If it coughs or dies, then that's the problem.
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