Hello I was told to post here
I just got a 04 se disco 2
121k miles
Having some issue
Engine revs great has no milkshake
It doesn't seem down on power but struggles to accelerate to hwy speeds just revs up and almost like it being held back?

Got code for spark plugs misfire ,maf,02,fuel pump, the air injection appears to have been deleted , coolant throttle body bypassed has been done .

Also didn’t appear to be vacuum leak, I pulled some vacum lines off and wouldn’t hardly run.

I have ordered the full tune up kit plugs ,wire
new crank seal - old one leaks
cps sensor
All

02 sensors

 

A shot in the dark, I had a Dakota with a similar issue. The Cats were plugged. I’m sure there are a number of other things that could cause it.

 

I wonder how to check that ?

 

I don’t know if there’s a definitive way. Mine were rattling and I found out they were plugged when I removed them. (It had way more power after). To really test them you would need to disconnect the pipes and then try to blow air through them, but I have no idea how you would know what’s normal. Maybe a muffler shop could test them? But this is only one idea. I think some other people with more experience on this issue will chime in here.

 

nice dark grey disco!

 

Confirm your transmission fluid level is at full mark.

 

If you're doing plugs are wires, coils probably wouldn't be a bad either at the same time. Which usually means pulling off the upper intake, so you'll need a gasket set.
Fuel pump code is odd. You might want to get a Rover-specific code reader so you can get more detail on what's actually going on, as well as read transmission and body codes.

 

+1 on a proper code reader. Also, a Nanocom could tell you some specifics on running and such.

And a way to possibly test the cats is with a Ultragauge and setting up a page for pre and post cat O2 values.

 

I don’t think your O2 sensors can tell you if the Cats are plugged.

 

I thought they could. I’m almost sure I read it in the UG documentation. Also saw this thread:

https://landroverforums.com/forum/di...or-1-f-108338/