[Engine] random hesitation (increasing frequency) and ESP warning lamp and sound.

[Bootlebarth]

This issue appears to be getting worse and I had a nerve wracking 15 mile journey today in one instance the rev counter dropped to zero even though vehicle was at speed (~40mph) and then recovered. On other occasions no big change in indicated revs.
The ESP lamp went out once but soon returned, it is always out on startup and there are no issues with starting.

I have a 1.6 HDI engine. Any sugestions?

[Bootlebarth]

This issue appears to be getting worse and I had a nerve wracking 15 mile journey today in one instance the rev counter dropped to zero even though vehicle was at speed (~40mph) and then recovered. On other occasions no big change in indicated revs.
The ESP lamp went out once but soon returned, it is always out on startup and there are no issues with starting.

I have a 1.6 HDI engine. Any sugestions?

Well after living with this problem for nearly a year a "solution" has been "found".

On the last service I had the timing belt replaced and what do you know smooth as the proverbial just like a new machine. Whether it was the belt or something done during the belt change I know not. Just to have a carefree drive again is enough.!

[cancunia]

Maybe it was the crankshaft sensor with a bad connection, it needs to be removed to change the belt. Good to know it's fixed all the same.

[Bootlebarth]

That makes sense. I didn't know about that sensor (maybe the garage did'nt either)

[brajomobil]

Did you have any errors on diagnostic ?
Lexia or plain ODB...


I have seen a lot of bad CKP sensors on Renault.
Renault original Clip Diagnostic shows nothing.
Revs goes all over the place. Engine hesitates a lot...
Replace CKP , engine like new... Diagnostic not helping at all....


Best regards,
brajomobil