Help please.

[Pooh]

I have a problem with my new 400SE, it runs fine when it is cold(maybe a bit down on power)but once it is warm it will not accelerate properly, it splutters and hesitates above about 2k rpm.
I noticed that a previous owner has fitted an alloy swirl pot in the fuel system with no pre-filter before the pump, I am wondering could it be a fuel supply problem made worse when under bonnet temps are high or am I on completely the wrong track?
Thanks
Robert.

[adam quantrill]

The engine temperature sensor sounds like the most likely starting point, and whatever you do, don't get an Intermotor one. They are about 12 quid.

[Brap_Brap]

Make sure you do put a filter before your pump. I've had swirl pot rust break mine. I put in a glass sided filter and sure enough you could see some rust accumulate in it.

[Pooh]

adam quantrill said:

The engine temperature sensor sounds like the most likely starting point, and whatever you do, don't get an Intermotor one. They are about 12 quid.

I have been trying to find a local supplier of engine temp sensors and they only seem to have Intermotor ones, could you please let me know which makes should I be looking for and where can I get them?
Thanks
Robert.

[350zwelgje]

Pooh said:

adam quantrill said:

The engine temperature sensor sounds like the most likely starting point, and whatever you do, don't get an Intermotor one. They are about 12 quid.

I have been trying to find a local supplier of engine temp sensors and they only seem to have Intermotor ones, could you please let me know which makes should I be looking for and where can I get them?
Thanks
Robert.

Range Rover dealers do have the right one. That is where I bought two, as even the new ones can be 'not working' right out of the box! Both are fine so have a spare now...

Rob

[Pooh]

350zwelgje said:

Pooh said:

adam quantrill said:

The engine temperature sensor sounds like the most likely starting point, and whatever you do, don't get an Intermotor one. They are about 12 quid.

I have been trying to find a local supplier of engine temp sensors and they only seem to have Intermotor ones, could you please let me know which makes should I be looking for and where can I get them?
Thanks
Robert.

Range Rover dealers do have the right one. That is where I bought two, as even the new ones can be 'not working' right out of the box! Both are fine so have a spare now...

Rob

Thanks, I will try the Range Rover dealer in Perth, I tried the dealer in Aberdeen but the parts guy did not even know that they dealt with Rover V8s. (he did sound about 12)

[grahamw48]

Also have the timing properly checked.

My 400 had the same symptoms when I first bought it.

Timing was way out, and distributor loose. Everything else was working fine.

Correcting the timing fixed it.