jaguar Classics x type 20 diesel 04 reg - losing power under 50 mph

Honest John Back Room » Motoring discussion
View Threaded
Wed 15 Sep 2010 10:28
jaguar Classics x type 20 diesel 04 reg - losing power under 50 mph - nigel 62

hello im at my wits end . my car seems to lose acceleration on build up to 50mph its like its going to ideling speed the engine just dies then builds back up again this happens only in gear . out of gear reving is ok no loss of power or revs , i have beeen told it could be either the injecters blocked or the fuel pump .to solve the problem the main dealer want to charge in excess of 1800 pounds (sod that) any information would greatly be appreicated

Reply | Report as offensive | Link
Wed 15 Sep 2010 11:17
jaguar Classics x type 20 diesel 04 reg - losing power under 50 mph - madf

"i have beeen told it could be either the injecters blocked or the fuel pump"

yeah right.

Has anyone checked the fault codes? Cos if they have not, they should. And if they have they should be able to be more specific.

It could be lots of other things like a blocked fuel filter (when was it last changed?) or carbonning up of the EGR or whatever sensors are involved - don't know the engine involved.

I would try a diesel specialist as the "main dealer" sounds iffy.

Reply | Report as offensive | Link
Wed 15 Sep 2010 11:30
jaguar Classics x type 20 diesel 04 reg - losing power under 50 mph - Collos25

There are known problems with the EGR and a also the turbo actuator there are also a number of pipes that split and cause the symptoms you describe.You need to check every hose around the EGR and manifold with great care,help can also be found on the Jaguar/Mondeo forums. EGR valves can be purchased for around £40 the actuator if its electronic can only be purchased with the turbo and are around £700 or much cheaper for a used one on ebay,pumps and injectors can be bought also on ebay pumps tend to be very expensive but injectors can be sourced at reasonable cost.Having run one of these excuses for a mondeo after many problems I got it running ok and sold it.

Reply | Report as offensive | Link
Wed 15 Sep 2010 12:56
jaguar Classics x type 20 diesel 04 reg - losing power under 50 mph - injection doc
has the fuel filter been changed ? check the fuelpipes under the o/s/r wheel arch for kinks! yes they are metal but I have seen them folded ! air flow meters can be suspect as are EGR valves. The wires in the air flow meters on the 2.0ltr D are prone to breaking just inside the plug. As already metioned find a good indy or diesel specialist. check the actuator linkage on turbo is free, only the 2.2 was fitted with the VVTurbo which was electronic.
Reply | Report as offensive | Link