Lack of power - Found it ??

Robh18 · Aug 18, 2011

As many of you may be aware and if so now probably becoming quite bored with my posts on my T lacking in power I'm sorry however I may have just found it !!

Well keeping it short here it is ... With the trophy parked (in neutral) idle is very lumpy but this is normal for the 182's, when I slowly increase the revs the engine becomes steady and smooth which is good

however this next part is where I think the problem is ! ... when the revs start to reach 2500 - 2800 rpm the engine starts to become slightly lumpy and vibrations can be felt through the car, if i go past 2800 rpm the vibrations and lumpiness goes completely and runs fine again. This is not right and I think its the problem !!

What could be causing this ????

Cheers
Rob

aucky · Aug 19, 2011

Cam timing perhaps?

hoolio · Aug 19, 2011

aucky said:
Cam timing perhaps?

I think we both said this in the other thread. The problem manifested itself after the major service, have you had this checked yet?

Robh18 · Aug 22, 2011

The guy says timing cant be out as if it was it would be flagged up as lights on the dash ... ?

Matbrown · Aug 22, 2011

Nope, there is no cam timing light on the dash.

hoolio · Aug 22, 2011

Robh18 said:
The guy says timing cant be out as if it was it would be flagged up as lights on the dash ... ?

Methinks with comments like this your guy is not as good as you think. Really your car should not run worse after you take it to a garage and if it does it seems to suggest that they have not done something right.

Robh18 · Aug 22, 2011

That's true, but is he correct in saying the car if not timed properly will flag up lights on the dash ? or can the timing be out slightly and no lights present ??

hoolio · Aug 22, 2011

No, as far as I am aware incorrect timing will not bring up any lights. I'm no mechanic/engineer and that is why I'm loath to give advice a lot of the time. It may not be a timing thing but it does seem that you may not be getting the best advice/service from the guys you are using.

eljeffo64 · Aug 23, 2011

I agree, but just wondered; anyone mentioned/considered a worn dephaser pulley?
In any case, whoever worked on it shouldn't be asking you to do the fault finding, they should be sorting it out!

is1 · Aug 23, 2011

eljeffo64 said:
I agree, but just wondered; anyone mentioned/considered a worn dephaser pulley?
In any case, whoever worked on it shouldn't be asking you to do the fault finding, they should be sorting it out!

I think the car's only done about 13,000 miles hasn't it?

eljeffo64 · Aug 23, 2011

Ha! there's the reason; needs to be used more regularly ;-)

Robh18 · Aug 23, 2011

Thanks for the advice guys, the car is now on just over 14k
And the guy is real good mates with the guys from Renault, next Tuesday my mechanic is removing the original Renault mapping and re installing it, he thinks it could be a mapping fault, he doesn't seem to think its timing.