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Took it to another place for diagnostics, and they're used to Clios, and it still failed even after Cat was "red hot". So, worst comes to worse, and it's change both sensors at least £100 each, then new milltek sportscat fitted for £650, then belts due Feb for £650, then possible new remap...

Have bitten the bullet, and as i cant get to the connector of the lambda sensor on exhaust manifold from axle stands, have booked it in to get investigated. £45 for diagnostic and booked me in next day (Leave it there and they can have a look when they can) which i thought pretty good Lets see...

Think i will take back to MOT tester, and have a chat and see if he can retest (After ive run through some CAT cleaner) and if test fails again ask him to replace the sensors, then if it still fails, may have to replace the Milltek Sportscat. I dont mind replacing the sportscat at £550 odd...

Thanks for this. This diagram was shown to me in a parts retailer store. They were pretty confused which was applicable to where, as well. (And confuses matters a bit more when mine has after market milltek exhaust with a sportscat, but assume the sensors would be same anyway to marry up with...

I have a reasonable scanner, but isnt as in depth as to check lambda sensor voltage

Just phoned Renault Main Dealer spare parts for info- and I know theres lots threads and comment on this site bout LAMBDA sensors So- 7700107433 is the correct pre Cat sensor (£168.07 + VAT) They then said the after CAT sensor was 8200590431 (£168.06 plus VAT) when around this site it says...

where in Hampshire, i could nip down How do you think you could help? Thanks

No, they arent cheap. atm trying to find a video showing removal Believe there is one on the manifold (accessible engine bay?) and another on the CAT itself

My mechanic thinks they didnt get it hot enough, although i did get it up to temperature, idling, for 20 mins before i went in Looking at swapping out the pre and after Cat sensors if it has both, anyone got links? (2006 model 197). Seemingly the connector plugs can be a problem, and OEM parts...

Clio 197 failed emissions today- big style CO2 was 10% (Should not be above 0,2%) HydroCarbons 900-1500ppm (Should not be above 200ppm) Lambda 0.7 (Should be between 0.97-1.03) Tester suggested new LAMBDA sensors and new Catalytic converter That seems strange when i only fitted the Milltek...

Did this result in any gains (Even minimal, or feeling of more free flowing) or does it just add noise?

Yes. Turning over fine but getting nowhere after several attempts Checked my paperwork and cant see a new battery fitted in last 6 years So, as Ive done in past (And never regretted) bought a new Youasa battery and will fit it tomorrow Think will keep the charged up old one in the boot for...

Similar to me. Spent a fair few quid upgrading a 172 Phase 1 a while back, after 5 years moved to a 197 after writing it off at Brands Hatch. Didnt fancy spending lots on the 197 replacement, even removed knackered KTEC coilovers and put standard suspension back on. Remapped first off...

Engine turning over, wont start Always been told start with the battery. So charged it overnight Maxed out at holding 13.2 volts. (Should it max out at 14.4 volts as if so, battery needs replacing?) Put back in, started fine With engine idling, voltage was 14.4 Soooooooooo......... Is 13.2...

Have used V-Power last couple months after an issue using Tesco 99 RON (Contamination scare at my local Tesco couple month back) Changed back to Tesco stuff as its lots cheaper- have noticed it seems slightly "less sharp" at pulling away, and less sharp thru the rev range The car is generally...

Last year had my 197 remapped at Engine Dynamics- got rid of the flatspot Prior to that I had a Racechip pedal box which worked really well for torque/acceleration down low when pulling away in gears The Racechip pedal box didnt work at all well after the remap, and nowadays my pull away is...

Been told its normal.

Just replaced my fuel pump with a good used one, and its making a slight buzzing noise. Is it normal, air block, dirt block? Seems to run ok?

Anyone got a link to a 197 decent fuel pump

Might just be the words I use. Alex at AW has agreed it's coming from gearbox. Like a slight grating. Not particularly loud, but irritating. Specially when u just spent stackloads getting the box reconditioned.