clio 172 wont go anywere!!!

[pritchard89]

hi i brought a clio sport 172 and basicly there is no power? have to change gear at around 5k and wont go over 100mph? put it this way my mate has a 106 quicksilver 1.4 and i cant go past him!!? had it plugged in and came up with rear lambda sensor? cud this be my problem? also been told the timming may be out? please help! thanks

 

[Slinkey]

limp mode? Is the engine light on?

 

[Tom84]

sounds like a blocked cat

 

[jack_kemp]

Haven't you answered your own question? Just replace the lambda sensor....

 

[pritchard89]

i have no engine light on but thats what i falt it might of been at first.... and the lambda sensor my friend told me it wudent cause it to loose so much power? true or false? also a brake foot pedal switch come up on the machine aswell

 

[Sargara]

The Lamda sensor is how the ECU knows what fuel/air ratio its running by determining if its rich or leen. If your friend doesnt think that will effect performance hes special. In regards to timing being out thats probably true if its had its belts changed in the service history at a local garage. Anything other than a specialist or Renault your pretty much guaranteed to not have had the proper timing tools used. It crops up ALL THE TIME on these forums.

 

[pritchard89]

okay thank you! ive just orderd a lambda sensor so ill fit that and let you no if my problem is solved! thanks

 

[Matt W]

LOL at timming.

 

[pritchard89]

what about the timming? lol

 

[brisa4984]

should have bought a quicksilver lol

 

[bmh.01]

Don't think the lambda will make a blind bit of difference, the post cat one is only there to check the cat is working correctly. And if it were a pre-cat one it'd be idling rough and usually puts the engine management light on.

Blocked cat is a possibility I guess. Still, i'd put money on the lambda making no difference at all with what you've said.

Brake pedal switch is very common and just wants adjusting.

Timing wise when did it last have a belt?

 

[Martin_172]

as above rear lambda has nothing to do with the mixture, only controls the cat, and im pretty sure the pre cat one goes into closed loop when on full throttle so wouldnt make a difference?

i always hear people taking about blocked cats but never came across one myself, id be looking at cam timing, does it idle ok?

next up check the exhaust system, a guy from here put his cup on the RR and it made just over 100bhp, on close inspection it had a dodgey exhaust that looked like it was less than 2", changed that for a genuine renault, back on the rollers and it put out 172!

 

[Sargara]

Ah sorry i thought it was pre-cat lamda we were talking about. If its the rear then what the above said

 

[pritchard89]

yea it idles fine... so maybe i need a new exhaust system? the back box on it looks pretty new.... its confusing lol ive just spent 80 quid on a lambda sensor hoping it would be that but by what people are saying its not lol

 

[pritchard89]

and the cam belt was done sum time last year so the last owner said but dident say wen ezactly

 

[coxxy]

any proof of the belt being done or did they just "tell"l you it had been?

 

[pritchard89]

just said in the advert for the car that it had been done last year... but wen i rung him up the other day to ask him he said he dident no so he most prob is hiding somthing anyway changin lamba sensor now so will let ya know what happens cheers

 

[pritchard89]

well lamba sensor has been done but cars still slow... does feel a tad quicker but nuffin special lol so more head scratchin time i think!

 

[Matt W]

dident say wen ezactly

This is pure comedy.

 

[coxxy]

fred is the bloke you need to talk to mate. he is a genius.

 

[pritchard89]

ok so changed the cat.... crank shaft sensor and maf sensor and a diff throttle bodie.... but still no luck!

 

[Shervi]

Hmm, just a thought hear ( and don't go murdering my post if this is stupid ) But I think it may have something to do with the fuel delivery system. Try the fuel filter.

If it idles fine and revs up fine when standing still but when you up the speed it doesn't shift, it may not be getting proper fuel delivery?

 

[pritchard89]

yes maybe... the exhaust sounds a bit huffy and puffy if u no wot i meen lol it also smells quiet bad of fumes aswell

 

[Bren Rogers]

yes maybe... the exhaust sounds a bit huffy and puffy if u no wot i meen lol it also smells quiet bad of fumes aswell

No, please clarify.

 

[Shervi]

You can get a cat cleaner from halfrauds... may be worth a try

 

[cheechchong]

sounds like blocked fuel pump/filters/injectors i swear the same happened to me n the pump and filter both covered in s**t changed the injectors cuz they would have had s**t in too n got a set from a friend who raced cups:rasp: