X type help

[Myblackt5]

Hello all, 

Im hoping someone can help me. I have a 2002 X type 2.5 v6 sport with manual transmission. The car has developed an irritating fault. When accelerating in any gear once the revs get above 2750rpm the engine management light starts flashing and it cuts the power until the revs dip below 2750 rpm. 

This only occurs when the engine is under load. You can sit stationary and rev it all the way to the rev limiter without provoking the engine management.

The car has thrown up the following fault codes:-

P0301

P1313

P0420

i have changed the coil packs on bank 1. So cylinders 1,3 and 5 as well as replacing all 6 plugs. All new parts used. 

The old plugs did not show anything out of the ordinary. Has anyone experienced this or similar before. Can anyone point me in the right direction to getting this fixed. I like the car and don't want to sell it but I'm struggling to justify keeping it.

Yes I know that 2750 rpm gives me 70 mph in top gear but it would be nice to go up a hill without it  cutting the power. 

Thank you all

[JOE-DOT-COM]

Hi

this is out of JTIS for a 2002 2.5 v6 x-type

I'd say you have 2 faults, a faulty Ho2 sensor and a possible blocked injector on cylinder one

Cheers

Joe

 

[Myblackt5]

Thank you for that. Most informitive. 

So do you think replacing the lambda sensor may help? 

Also this is really silly sounding even as I type it but possible blocked injector? Would Redex or some other fuel treatment help this?

Thanks again

[Myblackt5]

I took the car out the other morning. Not frosty or anything but the car hadn't been used in about 3 days. Didn't have the problem come up until it began to get warm. Does this make a difference to the diagnosis?

[Myblackt5]

It also gave p0430 code too

[JOE-DOT-COM]

Hi

replacing the lambda will clear one of the faults

its worth trying, the lamda fault might be due to the missfire, causing a lean situation

cheers

Joe

[Myblackt5]

I've bought some fuel treatment so will give that a go too. Lambda sensors seem expensive