2003 Opel Astra engine management

2003 OPEL ASTRA
45,000 MILES • 4 CYL • FWD • MANUAL
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VINCENT MCDERMOTT
  • MEMBER
  • 1 POST
car lacking power and misfiring.coil pack is ok.when put on handheld diagnostics the only fault showing up misfire.i understand egr valve gives trouble but cant see it,any advice welcome.
Jul 4, 2009 at 9:22 PM
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DAVE H
  • ✓Experienced Mechanic
  • 13,383 POSTS
start by changing the spark plugs and leads and double check the coil pack !.. remove and clean or replace the CKP (crankshaft position) sensor .. after this you are looking at a possible injector fault on the missing cylinder .. add a good fuel cleaner to the tank to clean the injectors .... EGR valve does not generally cause a misfire fault !! hope this helps


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Jul 7, 2009 at 10:00 PM
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