Topic: 3.0 mv6 hard to start when cold (Read 641 times)

SteveT528 · « **on:** 08 December 2009, 10:20:34 »

Hello, when trying to start my omega on these cold mornings it dont want to start it keeps trying but wont for 20 seconds then it starts and runs perfect. no engine light or anything.

Kevin Wood · « **Reply #1 on:** 08 December 2009, 10:39:47 »

Is it turning over at a reasonable speed on the starter?

Does it start if you turn it over with your foot flat on the accelerator for a few seconds and then start it normally?

Does it idle and run Ok once it is running? Idle speed control OK? No misfires?

It would be worth doing a paperclip test to see if there are any codes stored. Not all of them light the EML.

If the above all checks out OK I would be checking the coolant temperature sensor. perhaps the ECU is not seeing the true engine temperature so is not enriching the mixture enough when cold.

Kevin

SteveT528 · « **Reply #2 on:** 08 December 2009, 12:01:27 »

Thanks for the reply kevin. it is turning over fine it has a new battery.

it trys to start if i keep pressing the accelerator. , it has had an oil cooler recently aswell due to oil in coolant maybe the cts is full of mayo? :-/

andyc · « **Reply #3 on:** 08 December 2009, 15:28:12 »

My 2.5 was the same and turned out to be the crank sensor, no EML on either.
Andy

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Author Topic: 3.0 mv6 hard to start when cold (Read 641 times)

SteveT528

3.0 mv6 hard to start when cold

Kevin Wood

Re: 3.0 mv6 hard to start when cold

SteveT528

Re: 3.0 mv6 hard to start when cold

andyc

Re: 3.0 mv6 hard to start when cold