Join Date: Oct 2016
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Re: Modus 1.4 limp or not?
I would like to update progress, went to buy new inlet manifold seals from Renault, were I fount a workshop manager and he told the vehicle will never go into limp mode if the engine light is not shining. So that ends all my speculation on limp mode.
I then told him what the car does with the spluttering on idle and in the meantime I also discovered that when pushed hard on uphill it seams to suffer from fuel starvation.
He said I should check pump pressure and should not be below 3.5 kpa.
My test showed 3.3 kpa, so I blocked off the return flow and pressure went up to 4kpa.
I just reconnected the engine injector rail and spluttering disappeared, so I'm off to buy a new pump.
I would never have thought of this myself because logic tells me that if a fuel pressure problem exists, it should only affect the vehicle at a higher speed and not at idle.
Anyway hopefully some can learn from my experience, I will complete the repairs and write a final post if successful.