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2012 Mk3 Clio 1.2 (iMusic)
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Discussion Starter #1
Discussion Starter • #1 3 h ago
Daughter's 2012 1.2 Mk3 Clio (iMusic) cut out on the motorway and had to be towed home. Now it will not start at all.
Turn key to run position and can hear fuel pump prime for couple of seconds.
Turn key to start and starter motor turns but no attempt at all to fire. Hear fuel pump run briefly then stops.
Have checked CPS - appears fine (and very clean), checked sparks seen from all HT leads when cranking.
No blown fuses anywhere (well not that I can access anyway - are you really supposed to remove the fascia panel to access the top fuses on interior fuse board?...). Checked resistance / continuity with DVM and all fine.
Swapped around some relays in switching unit, no change in behaviour.
Can't physically see any wiring issues, loom in very good condition.

Intermittent codes appear on (cheap) OBD2 scanner:
  • P2101 Throttle Actuator Control Motor Circuit Range/Performance
  • P0106 MAP sensor (removed, very clean, wiring seems fine)
Disconnected line from fuel rail and everything dry, no smell of fuel at all.

When engine cut out daughter vaguely remembers seeing an Injection-related warning message.

(Want to retry as much as possible at home first before being fleeced by local dealer...)

What (and how) can I check to see if this is a fuel pump or injector problem, or if blockage anywhere else in the system?


Getting desperate....
 

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Super fantastic Mod Technical Supremo Nice Guy
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Disconnect fuel line from fuel rail, switch ignition on, You will get fuel out if fuel pump is working
Or
Have you got the back seat out yet, as fuel pump is under back seat
Switch the ignition on, and listen, you might hear the fuel pump,
Easier to do this with two of you.
Back seat out, remove the large rubber bung, place your hand on the fuel pump/sender unit, and get your helper to switch ignition on
You will also feel as well as hear the fuel pump buzz
 
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2012 Mk3 Clio 1.2 (iMusic)
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Discussion Starter #3
Disconnect fuel line from fuel rail, switch ignition on, You will get fuel out if fuel pump is working
Or
Have you got the back seat out yet, as fuel pump is under back seat
Switch the ignition on, and listen, you might hear the fuel pump,
Easier to do this with two of you.
Back seat out, remove the large rubber bung, place your hand on the fuel pump/sender unit, and get your helper to switch ignition on
You will also feel as well as hear the fuel pump buzz
Had back seat out and backprobed pump with DVM to check power.
Switching ignition to run position I can hear the pump prime. Swicthing ignition on and sure I hear something very briefly, but nothing after. Could that be either cut off due to pressure or just not running properly.
Will disconnect fuel line from rail and try that way (with my ever so helpful daughter assisting and a rag/container just in case fuel is getting there...).

Would like to take the pump out and bench test it but don't fancy having to drop the fuel tank first.

Is the P2101 code symptomatic of a knackered pump/sender?
 

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Super fantastic Mod Technical Supremo Nice Guy
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Doubtful normally means engine has stalled ..

You have checked CAM belt is still intact ( Just asking here )
 
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Discussion Starter #5
Doubtful normally means engine has stalled ..

You have checked CAM belt is still intact ( Just asking here )
Err, nope. Have to admit, didn't think of that. Easiest way to inspect it? (assuming an easily accessible cover somewhere...)
 

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51 plate Laguna 2 1.6
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Renault? Easily accessible? You're avin a larf.
There will be a cover on the driver's side end but you probably have to take a lot of things off. You may need the Haynes book for that.
When was the belt last changed and what's the mileage?
 

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Sexy at 71 super mod..
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Renault? Easily accessible? You're avin a larf.
There will be a cover on the driver's side end but you probably have to take a lot of things off. You may need the Haynes book for that.
When was the belt last changed and what's the mileage?
Haynes manual good call..but in the mean time and just to fill in..

 

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51 plate Laguna 2 1.6
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Ah that's handy. That may save OP the price of the manual. OP you only have to remove the upper cover to check for absence of belt. Looks like engine mount off first........crikey what a performance. I probably had to do it on the Laguna.......mercifully forgotten.
 

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Discussion Starter #9
Renault? Easily accessible? You're avin a larf.
There will be a cover on the driver's side end but you probably have to take a lot of things off. You may need the Haynes book for that.
When was the belt last changed and what's the mileage?
No idea when (if) changed.
Just checked, ~95k on the clock, she's had it almost 3 years and maybe done 10k a year...


If it is the cambelt, does that mean the engine is knackered? (assuming D4F on a 2012 Clio mk3?)
 

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51 plate Laguna 2 1.6
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Can't you look in the oil filler cap whilst cranking it to see if the camshaft is working?. Or am i being daft here.
Well, yes, but the idea is not to crank it again until you're sure for fear of further damage. If it is broken, the pistons get another chance to bend some valves.
No idea when (if) changed.
Just checked, ~95k on the clock, she's had it almost 3 years and maybe done 10k a year...
If it is the cambelt, does that mean the engine is knackered? (assuming D4F on a 2012 Clio mk3?)
Then she's had it from 5 years old and the change would have been due at 6 years if serviced by the book, so it's unlikely to have been done previously. If she hasn't had it changed, a break is deffo on the cards. I wouldn't turn it over again until it's checked.
Knackered or not is a matter of luck but damage to one or more valves is very likely. I still have my bent Rover 213 valve as a souvenir.
 

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Discussion Starter #13
Update:
@ours2012
  • Disconnected fuel line from rail, turned ignition on, no fuel.
  • Also checked at fuel pump. Turn to run position, can hear/feel pump prime. Turn ignition on and can feel/hear pump try to run, albeit for about a second.
  • Haven't been able to remove top cover and check timing belt yet, it's been raining most of the time and car on drive with no cover available.
Couple more questions:
  • If it were the timing belt, what type of noise would you expect to hear when trying to start the engine?
  • Turning key to start position can a high pitched buzz in engine compartment (sounds like it's somewhere between engine and internal instrument cluster location. It persists after trying to start the car. What would this be?
 

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Discussion Starter #14
[Am not attempting to start in effort to limit damage if it is the timing belt. This question more from initial attempts to diagnose issue]
 

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Super fantastic Mod Technical Supremo Nice Guy
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wont do any more damage if belts gone as daughter was driving ,,damage is done
The noise yu hear will be the throttle body trying to find initial settings, dont worry about it , its always been there , you have just never heard it before

Usually when the belt has gone on a small engine, the engine tends to spin over really fast

not saying it is your belt here, but would be first thing to be checking for two reasons now, one peace of mind, and two so you can look somewhere else as why its a non-runner
 

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Discussion Starter #16
wont do any more damage if belts gone as daughter was driving ,,damage is done
The noise yu hear will be the throttle body trying to find initial settings, dont worry about it , its always been there , you have just never heard it before

Usually when the belt has gone on a small engine, the engine tends to spin over really fast

not saying it is your belt here, but would be first thing to be checking for two reasons now, one peace of mind, and two so you can look somewhere else as why its a non-runner
Well, finally managed to remove the top cover and inspect the timing belt. What a complete PITA (do all Renault mechanics have tiny hands? The rear bolts on that cover are not easy to access...).
As I took away the cover, a couple of stripped teeth were inside. Nice little smooth section on it.
184843


Gonna be expensive... :confused:
 

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Super fantastic Mod Technical Supremo Nice Guy
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Not really that dear, if you are willing to do the work yourself
You have your phone.
So its taking a part off, picture, another part off a picture.
Renaults are time consuming.
BUT lots of car engines are now



Its not a hard job,
Just remember its already tucked, so nothing to lose
Head off, valves out, new valves in, head back on, new belt,,,, jobs a gooden

YOU will get as much help as you need from us, plus little tips here and there to make the job a bit easier
should you decide to tackle it
 

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Sexy at 71 super mod..
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Not really that dear, if you are willing to do the work yourself
You have your phone.
So its taking a part off, picture, another part off a picture.
Renaults are time consuming.
BUT lots of car engines are now



Its not a hard job,
Just remember its already tucked, so nothing to lose
Head off, valves out, new valves in, head back on, new belt,,,, jobs a gooden

YOU will get as much help as you need from us, plus little tips here and there to make the job a bit easier
should you decide to tackle it
If pistons are tucked then what..second hand one would be a better option than rebuilding and less time consuming..new belt on the engine before that goes in is a must though..if pistons are ok I would go for a recon head..
 

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Super fantastic Mod Technical Supremo Nice Guy
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He wont know until the heads off
Would price all parts up first
So its
Valves
Head gasket set
Head bolts
Antifreeze
Oil
Oil Filter
Cam belt kit + water pump
An extra £50 for anything that could possibly be found as he's doing the job

Little bit of pricing up off tbay, then add 12% if getting the parts from a motor factors

This will give him an idea of costing the job up, and most importantly which way to go

Now taking this to a garage, Best part of a grand,
As opposed to £500 max, plus that priceless feeling of I Did That
 

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Sexy at 71 super mod..
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Complete engine ready to drop in from around £200 to £400..still a lot of work but the car would be on the road quicker..at the end of the day its down to the OP and what he can afford and if he can do the work himself..
 
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