I have a 96 disco SD with 120000 on it just put magnacors and bosch 4 in lots more power but still losing 500 rpms when it gets warm about a third of the way on temp gauge I just seafomed and always run 92 should i check feul pump or ignition coil

Thanks
Jonas

 

So, are you loosing power or RPM's, do you have any fault codes, if so, what are they?

 

losing rpms but at freeway speeds it really lugs down It had P1316 and P1313 i just put the wire and plugs in and had the codes cleared it is still losing rpms but it hasnt thrown any codes yet

 

How about your fuel filter, when was it last changed?

 

I just got a new fuel filter but before i could put it in my cel started to flash so i ran the code and they were p1313 and p1316 i have the new filter in but hessitant to do any thing because this is the first time my cel flashed at me

Please anything will help
Jonas