Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: SteveT528 on 08 December 2009, 10:20:34

Title: 3.0 mv6 hard to start when cold
Post by: 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.

Title: Re: 3.0 mv6 hard to start when cold
Post by: Kevin Wood 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

Title: Re: 3.0 mv6 hard to start when cold
Post by: SteveT528 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? :-/

Title: Re: 3.0 mv6 hard to start when cold
Post by: andyc 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