Diagnose - Whats up now

[Sib]

Not sure what the problem is but here is a description:

first 2 gears, no issues - will go up the rev's no problems

the problem happens sometimes in 3rd but mostly in higher gears when going just over a tonne.

I get little patches of power loss, as if the petrol is blocked, not sure if this is linked to my exhaust which is making a load noise when I take my foot off the gas (normally 70 mph on motorway) but only seems to happen for a few seconds then goes away.

Any ideas?

 

[ditz]

any responses you get can and will only be based on guess work - it needs looking at.. but from what little information you have given im saying blocked cat.

 

[SkidMarx]

yea seen blocked cat on 182 before, but affected it in all gears... so cant be sure

 

[Sib]

its just had a second hand replacement, suppose this could be the issue

 

[SkidMarx]

non gen cats r useless n if its second hand its probly been threown on the floor.. hence f***ed