2003 mondeo tdci 130 bhp when stood still it will rev all the way round no problems when driving as soon as I hit 3rd gear between 2500 and 3000 it goes into limp mode fault code p0251 I have had the pump replaced and injectors reconditioned and recoded and it still does the same turn off and back on and all is well until it hits 2500 rpm any ideas please

 

thanks for all your help folks it was the diesel filter

 

Hadn't seen this post before, but suprisingly fuel filters do cause a lot of issues on TDCIs...

Seen pumps/injectors replaced for no reason, then car brought into main dealer, we fit a fuel filter - sorted.

Always do the cheap stuff first

 

Similar issue other day on a focus it run like a pig he'd be told pump and injectors needed doing. I fitted 11 quid off filter and run like a dream. People take fault codes too literally.

 

Same here, had a Focus 1.6 TDCI in, had been elsewhere, new MAF, new no3 injector (that was leaking) new EGR, kept going into limp after about 5 miles of driving.

Fixed the fuel leak, new fuel filter..sorted.

 

My mondeo had quite a bit of hesitation at 2500rpm, would be worse the more throttle you used. Full service, not had an issue since!

 

Had loads of trannys and connects at work doing this. Or they keep holding back and jurking. Change fuel filter job jobbed.