Renault 5 - Engine problem | Technical matters | Back Room Forum

Tue 7 Jun 2005 18:50

Renault 5 - Engine problem - jacoblp

I have a problem with my Renault 5 from 1993 (Injection model)

Failure:
The engine runs fine when it is cold, but when it has reached its normal temperature the engine has a funny idea about stopping/stalling when the clutch is pressed.
Sometimes it is really jumpy under light to medium load conditions as well (When it is warm). It feels like its loosing power and then it starts to get jumpy. If I press the pedal again the failure disappears but only until I release the pedal again (Back to light load conditions).

I have tried my local garage but they haven't been able to fix the problem. They have tried to change the MAP. It didn't help much.

I have recently changed the distributor cap/rotor, cables and spark plugs.

Do any of you have an idea?

Thanks
Jacoblp

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Tue 7 Jun 2005 21:03

Renault 5 - Engine problem - Roberson

I had a problem similar to this on my '93 Polo. I have no idea how the Renault set up works, but mine was due to a split engine breather pipe, which allowed unmetered air into the induction system. In my case, i might as well of drilled a hole in the air filter housing, because the split pipe was so close to it.

Mine would have a good idle when cold, but would be all over the place when hot. It also had trouble on light throttle openings, it would miss and surge terribly, and power delivery was anything but smooth. Actually, power took a bit of a nose dive too, what about yours?

Check over all of the breather pipes, looking for splits or tears.

Let us know how you get on

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Tue 7 Jun 2005 21:19

Renault 5 - Engine problem - Civic8

You would be wise to check any vacuum pipes as well.They can split on inside of pipe.So not visible from outside.Just a thought
--
Steve

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Fri 10 Jun 2005 20:23

Renault 5 - Engine problem - jacoblp

Thanks for the advice. I have checked all the vacuum tubes/pipes and they look OK.
I have checked some of the sensors (idle switch, inlet temperature sensor, lambda sensor) it seems that they are working (according to the Haynes manual).

The Renault 5 model I have has an exhaust gas recirculation system fitted. It should only open for the recirculation valve in normal running conditions, not in idle (according to the Haynes manual). But if I try to unplug the solenoid (which control the recirculation valve) in idle, I can hear it makes a difference. Does that mean that there is something wrong with the ECU (computer) or ??

Do any of you have any other ideas?

Thanks
Jacoblp

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