Camaro This classic Pony Car, the Camaro left the lineup in 2002 and was thought to be gone forever, but is made its long-awaited return in the 2010 model year with a 300 HP V6 and a 426 HP V8 SS

2016 Camaro
Platform: F-Body & Zeta.

91 hard to start when cold

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Old December 15th, 2006, 12:29 PM
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Default 91 hard to start when cold

This is a RS 3.1 V6 that has had this problem but has gotten worse, always starts after being started till it gets cold. Entire distributor and cap, coil, map sensor, anti-knock sensor. plugs and wires have been replaced. No irregular ECM code, says all is fine. I installed a electric heater in the lower radiator hose that helps if the engine stays warm. The dealer has had and can not find the trouble. Is not equipped with a cold start valve so that is not it. Could the fuel pressure regulator be it, a lot of trouble to remove to find out.
Old December 16th, 2006, 6:52 AM
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Default RE: 91 hard to start when cold

When you start it turn the key forward and wait for 2 or 3 seconds. That will let the fuel system prime. It should help some. Other than that I don't know what to tell you without taking a wild guess.
Old December 16th, 2006, 12:16 PM
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Default RE: 91 hard to start when cold

Thanks but I have even left the key at on position for 10 minutes before cranking. The battery is fairly new and will crank until dead but no start, the old battery was the same way. Someone told my key chip may be bad but why would the heater keeping the engine warm help?
Old December 16th, 2006, 12:34 PM
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Default RE: 91 hard to start when cold

maybe the ect ecngine coolant temp sensor is bad
and is saying the car is to cold
this is just a guess based on what u said about the engine heater thing

good luck
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