Ive just been  given the job of diagnosing why a renault scenic of my  sisters suddenly refuses to  start.
spark is there fuel pressure and the injectors are opening (wet plugs)
Im going to scope the  rpm sensor but dont have the details of its waveform.Can any body suggest other tests using the  scope.
There is one fault code po505

cheers  ian

I haven't seen a Renault in years. That being said I believe  speed sensor aka CKP is what the computer uses for spark and injection pulse.  With an obdll code P0505 maybe the idle air valve is stuck closed. Try holding the gas pedal down to the floor and crank it. This should put the car in clear flood mode and turn off the injectors to dry the plugs. Let us know what you find.

hi 
had the  air  valve out  badly  gunged  that must explain the  code
Im getting the feelings  the  ecu  is toast,but thats to easy a  road  to go down

bangshout wrote on Jan 27^th, 2015 at 9:44am:

Im getting the feelings  the  ecu  is toast,but thats to easy a  road  to go down

Is it, why ?

What does your pirate copy of Autodata say ?

Shut the up you annoying prat, IF BUMP INTO YOU ILL  MAKE YOU EAT THE DISC

Is their anybody on here  who can offer some advice and help not the  dribble that his fool  spouts

bangshout wrote on Jan 27^th, 2015 at 12:41pm:

IF BUMP INTO YOU ILL  MAKE YOU EAT THE DISC

;D


bangshout wrote on Jan 27^th, 2015 at 12:41pm:

not the  dribble that his fool  spouts

pointing out you're using an illegal copy of Autodata is not dribble !

I apologise to other members  for the  tiff going on here.
Can anybody offer  any further   information or advice
On this  no start problem

bangshout,

Please read this:

http://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1094423353

Your reply #4 is way over the line here.  This is your only warning.


Robski wrote on Jan 27^th, 2015 at 9:58am:

What does your pirate copy of Autodata say ?

Not sure where this came from since it was not mentioned previously in this thread.  Are you just trying to push his buttons?  Not cool. 

Tom Roberts wrote on Jan 27^th, 2015 at 1:53pm:

Are you just trying to push his buttons?  Not cool.

No Tom !

The information he reqs is on his Autodata (for his DTC, unless his version is well out of date,I wouldn't know as I use the genuine online service), which is a Pirate copy, that's not cool  :-/

Can you please give your engine code ie k4j714, k4j750.     The crankshaft sensor can go open circuit whilst warm.      Check starter motor wiring harness touching exhaust manifold causing short circuit to earth ?Check all fuses ? 

Robski wrote on Jan 28^th, 2015 at 2:09am:

which is a Pirate copy, that's not cool

No, it's not cool.  But there was no reason for you to bring that up here.  That's all I was saying.

I see no difference between using pirated/cloned tools and buying stolen tools out of the back of a pickup truck.  You are supporting criminals.  Someday it might be your tools in the back of the truck.   >:(

Tom Roberts wrote on Jan 28^th, 2015 at 9:14am:

But there was no reason for you to bring that up here.  That's all I was saying.

I hear ya Tom,sorry dude.


Tom Roberts wrote on Jan 28^th, 2015 at 9:14am:

Someday it might be your tools in the back of the truck.

Been there many years ago, had to start from scratch almost  >:(