Idling Problems/Loss Of Power (What little I had!!)

[jujuju]

Noticed the last couple of weeks that every now and again my car just randomly loses power, I can have my foot to the floor and it just don't "go", and then all of a sudden it will just surge off.

It feels as though the car is braking, if that makes sense.

Can't be the brakes though, just had the disks and pads changed and the back cleaned etc. And this was happening before they were done.

Also, when idling, sometimes the car sort of splutters, sort of jumps up and down between 500rpm-1000rpm, as though it's gonna cut out.

Any help would be greatly appreciated.

Thanks.

 

[jujuju]

Any ideas?

 

[chrisbmxr]

When it loses power does the engine sound a bit ... rough?

Sounds like what my old motor felt like when it was running on 3 cylinders intermitently.

Could be spark plugs/ht leads/coil packs

 

[Beef-Mc]

From the sounds of things I would go for coil pack, just because of the uneven idle.

 

[ceaselesspig]

I've not had much experience with renaults, but from past experiences, problems with revs at idle are almost always curable by new ignition coils and a new mass air flow sensor. Ohh and obviously stick some new spark plugs in too!

 

[jujuju]

The car has just had a full service, so sparks etc are all new, so it's gonna be something they don't do in a service. Will have to get coil pack etc checked.

Just out of interest, where is the mass air flow sensor?

 

[Firas]

check the ecu tamper box. this caused my car to go into limp mode.

 

[Firas]

its a metal box that covers the ecu in teh engine bay.

 

[Dave Hester]

girlfriend had exactly the same problem with her billabong- ended up it was the tdc sensor needed replacing. It's been fine ever since

 

[jujuju]

Without trying to sound dull, can I ask where/what is a tdc sensor?

 

[Dave Hester]

Top dead centre sensor. Looking in ya haynes manual

 

[Harry_manback]

it sits on top of the gearbox, under the water pump, its on a short horizontal bracket and the sensor is at a 90 degree angle.

 

[Beaver6813]

Without trying to sound dull, can I ask where/what is a tdc sensor?

Sorry to revive an old thread, jujuju did you eventually get it fixed? And what was up with it? Mines doing exactly the same as what yours was!

 

[jujuju]

Still not sorted this out, ive had it in renault on the computa but nothing is showing up, they seem to think its the throttle body but arent 100% sure

 

[Beaver6813]

Still not sorted this out, ive had it in renault on the computa but nothing is showing up, they seem to think its the throttle body but arent 100% sure

Okay cheers, I've been digging around a lot on the web and some of them said that it might need cleaning out or something like that because it can get filled with "gunk" but usually a new one isn't needed. Did anything come up with the TDC sensor?

 

[jujuju]

Finally got this problem sorted, it was the two lambda (sp?) sensors had gone, along with all the wiring that goes to them.

How Renualt didn't pick this up when it went for diagnostics, I have no idea!

All sorted now though!

 

[Beaver6813]

Good to hear that its all sorted! I had to go on a long drive down to cornwall (500 miles round trip) and it seems to have fixed itself for the time being! How much were the lambda sensors to replace?