losing power juddering

2004 VAUXHALL ASTRA
104,000 MILES • 1.6L • V8 • FWD • MANUAL
Avatar
CARMEILA STEVENS
  • MEMBER
  • 1 POST
Car idles perfect, turns over fine, but it is losing power after 40 mph and juddering we have already put on a new coil pack and front oxygen sensor. Do you think it could be math sensor or spark plugs?
May 4, 2016 at 3:15 PM
Advertisement
Avatar
HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
first you have to scan for codes and checkfuel pressure with a gauge in US auto parts rent it not sure about UK we do not have any specs on that as it is not sold in US, but read this link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
May 4, 2016 at 3:33 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.