losing power juddering

2004 VAUXHALL ASTRA
104,000 MILES • 1.6L • V8 • FWD • MANUAL
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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
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HMAC300
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 48,601 POSTS
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
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