No turbo boost until 3500RPM

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TechHunt
Posts: 16
Joined: Thu Jan 05, 2017 6:58 pm
Currently Drives:: 2003 Renault Megane Dynamique 1.5dci Hatchback (Phase 1) and 2006 Renault Megane Sport 225

No turbo boost until 3500RPM

Postby TechHunt » Mon Apr 03, 2017 4:50 pm

Hi all,

On my 2003 Megan's II I have been having boost problems after the egr valve broke, I have repaired the valve (put the pushing pin back on) cleaned the valve, changed the turbo and all the fault codes cleared but i still have no boost until 3500RPM and I lose speed and revs on hills, it only affects 4th and 5th gears and 3rd does not lose speed but it does not gain either on hills, flat ground is ok. The engine has done 170000 miles so am thinking of doing an engine swap.

Any help appreciated, thanks

grandadbobby
Advanced Driver
Posts: 499
Joined: Thu Feb 16, 2017 9:05 pm
Currently Drives:: megan dynamique estate 1.9dci

Re: No turbo boost until 3500RPM

Postby grandadbobby » Tue Apr 04, 2017 12:09 am

Hi,
when you say 'changed the turbo' do you mean a new one and is the actuator set correctly.
l ask this as it sounds like your waste gate is always open.
Have you re-checked for codes after running for a while.
Also l would clean your boost pressure sensor just incase.
Good luck
Bob.


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