Limp mode

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S

Spitrans

Member
Posts
15
Location
Nottingham
Freelander2 usually when towing in slow moving traffic oŕ stationary foŕ a while the engine power drops and will not go above 40mph until in free moving traffic for a couple of miles and all returns to normal, no warning lights or raised temperature gauge, wether coincidence or not has only occurred after service and fuel filter change
 
This is a common issue if an aftermarket fuel filter is fitted.
Use only genuine fuel filters, or OE filters that have the word Perflux molded into the top.

The reason an aftermarket filter causes this is pretty simple. The fuel filter on these vehicles is supposed to have a thermostat in it, which supplies fuel fresh cold fuel from the tank when the engine is hot, or recycles warm fuel from the rail overspill when the engine is cold. If an aftermarket filter doesn't have the thermostat, then a majority of the fuel going to the engine is recycled and hot. The ECM then limits power, by reducing pump pressure to avoid damage, hence power drops off.
There's nothing actually wrong with the engine or the ECM, so no warnings are given, its just a safety routine which is only supposed to be implemented in extremely hot conditions, but a low quality filter allows the safety routine to be activated unnecessarily early.
 
Nodge68 said:
Make sure you know how to prime the filter properly, or it won't start after the change.
Click to expand...
Use one of these below to prime the good filter.
HdppZ17l.jpg
1

Aanyjzkl.jpg
2
 
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