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rough running ls1 when cold

Discussion in 'VY Holden Commodore (2002 - 2004)' started by pbl196, Apr 15, 2009.

  1. pbl196

    pbl196 New Member

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    Hi there my ls1 runs rough when cold but its fine when the engine is warm. Could the coolant temp sender be on its way out?
     
  2. PaulSV6

    PaulSV6 CHE Tuned 156.8rwkw

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    Running rough has nothing to do with coolant temp sender:thumbsup:
    When was the last time ur car had a service? Could be ur injectors are clogged up, bad batch of fuel etc........
     
  3. Baldric

    Baldric The BOSS

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    replace yoru fuel filter next to the tank. and clean your filter, but ls1's are common to run a little rough when they could but once they heat up they seem to go ok :)
     
  4. pbl196

    pbl196 New Member

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    Had the injectors cleaned only 10k ago and replaced the fuel filter at the same time, hopefully its only a bad batch of fuel. However when it runs rough when cold it also has a big flat spot down low once you get past that it drives ok.
     

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