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rough running ls1 when cold

pbl196

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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?
 

PaulSV6

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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........
 

Baldric

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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 :)
 

pbl196

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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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