Renault Clio 2003 - Engines - Loss of power and Warning Light - Page 11 - Renault Forums :: Independent Renault forum

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post #51 of 322 (permalink) Old 8th October 2007
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Originally Posted by adam1942 View Post
Graemep, welcome to the forums, if this happens while driving lock and unlock the car twice and you should be able to drive again,

The easiest thing is taking it to a garage which can connect a computer to the ECU and sort it out,

the ECU is at the top back of the engine in my 2003 1.2 16V Dynamique, look around there but dont touch it with a screw driver or anything as I belive that it is tamper proof so it may totally kill the engine.

Hope this helps!

Thanks for the tip! Next time it happens it's going in for the diagnostic.

Originally Posted by LOUIS CHIRON View Post
Hi Graemep,

On the D4F engine, the ECU at the back of the engine should have 2 SCART-like plugs entering it from the top.

The left-hand SCART plug should be enclosed by the 'Black Box' - it's a cube roughly 3 inches by 3 inches.

If you can't see it, it's probable that its been removed by the garage/previous owner (although its meant to be Tamper-Proof!).

If so, you probably should be asking why somebody's gone to the hassle of removing it...
I can get to both plugs - in fact I had them off for a look the other day. Definitely no box there - I'd better have a look around & see if I can spot any repairs!!!
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post #52 of 322 (permalink) Old 9th October 2007
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Hello all

Sixteen valve vanessa i have to say i've the same car and the exact same problems as you with my clio.

It's freaking me reading all the worries on this forum. My car has been having problems on and off for 2 weeks now. I'm not sure if the weather effects it or not. But it seems to occur when i'm in slow moving traffic.

I've had my car diagnosed 3 times now with various different results, i've had my break pedel sensor fixed to the tune of 55 but was also advised that it could be a plug or switch on my ignition/throttle system.

Its a problem that seems to happen at random. It'll run fine for a few days then one morning coming into work i will have problems. Restarting the car seems to fix it for a short while but my engin revs virtually die off then they come back and over rev then they die off again.

My engin management light comes on all the time (the electral fault one) but when i take it to a garage the light has turned itself off and the car is running ok again. I'm sure my garage think i'm making it up.

I am seriously worried at how bad this problem might actually be. I've had the car since July bought 2nd hand. Mine is a late 2001 model 16v 1.2

Have Renault or Watchdog got back to anyone about this?

Has anyone resolved their problem and how???

I'm seriously regretting buying this car now but i guess i am stuck with it.

I'd love to hear back from you all. I'm shocked at how many people are having the same problem.
Currently in space_age_jelly_head's garage:
2001 Renault Clio 1.2 16v
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post #53 of 322 (permalink) Old 9th October 2007
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Electrical Gremlins


I have been reading the posts here and i have had experience of similar faults with other manufacturers and yes, all the usual suspects have been listed...many in my experience may be Bosch parts and there often just seems to be something hookey with MAF 's etc in general!

An obvious point which i always consider with random electrical problems is the health of the battery/alt in the car, as sudden voltage drops can always lead to electrical gremlins! Have people tried swapping batteries round?

I have also come across vehicles where blocked EGR valves and sticky throttle butterflies give similar symptons. Do these Clio's have fly by wire throttles or mechanical ones? If they are mechanical has anybody tried opening the butterfly and spraying in a load of carb cleaner?

Also what are the air intake systems on Clio's like for perished hoses and air leaks? any air leak in the system would throw off the MAF and MAP readings therefore confusing the ECU .

Are these problems with the cars cutting out also accompanied by bouncing or kangarooing revs? Are the symptons worse when dipping the clutch in 1st gear such as when at traffic lights?

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post #54 of 322 (permalink) Old 9th October 2007
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Hi 16VV

I have had a reply from renault re my problem (caused by the loose black box) who said they'd 'a small number' of similar reports and were all down to the wiring loom/harness not being repositioned correctly after work was done i.e. Not their fault

They weren't going to do anything else about it, didn't want to look at MY car. I haven't yet received a reply to my further telling then this is not acceptable...

VOSA have also got back to me saying they are aware of 8 cases, all 1.2 Clio's but again due to badly positioned wiring harness wearing through the wires.

I have explained this isn't exactly what's happened on my car and they may look at it further. Watchdog have been copied in to all communications.

All I can say is EVERYONE who has this problem please report them to Renault AND VOSA. They don't work on hearsay and are unable to do anything if people don't report it. There are loads of us on here with this problem and so far only 9 reports lodged with VOSA.


My 52 plate 1.2 has the fly by wire throttle with integrated ICV so giving the throttle body a clean involoves removing the Inlet Manifold etc.. not as straight forward as on the other Renault engines. As far as I know the other 1.2 D4F engines are also like this.

I have two seperate probs, the engine cut out (due to worn wiring loom) and lumpy idle/nearly stalling. This can happen at traffic lights when I depress the clutch and the exhaust also splutters a bit every few seconds after a long drive. I'm thinking MAF sensor re this...
Currently in LOUIS CHIRON's garage:
52-plate Clio Expression 1.2, 3dr manual
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post #55 of 322 (permalink) Old 9th October 2007
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Yeah the MAF sounds likely. Can you try to disconnect it and start the car, If the idle is no little then the MAF is deffo up the creak!
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clio , engines , light , loss , power , renault , warning

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