2000 Nubira wont start when engine warm

walneybells · Post by **walneybells** » Thu Oct 11, 2007 6:22 pm

Hi hope someone can help. Have a Nubira 2.0CDX estate that runs fine except it will not restart when the engine is warm. It starts first time on a morning and I go to work, leave it sat all day and it starts again no problem at end of day but if I switch the engine off and try to restart it within a short time it will not fire up! It's driving me mad please help. (Have changed coolant temperature transmitter at suggestion of local guy)

Spider · Post by **Spider** » Thu Oct 11, 2007 6:48 pm

How many mile you have on this engine?

Dirty/sticking injector/s will behave this way.

When its cold? does it start at the first click of your starter ? or do you have to crank it over a few times ?
Have someone watch the tailpipe when you start it (cold) for black smoke and also check for a raw gas oder.

Welcome walneybells !

walneybells · Post by **walneybells** » Thu Oct 11, 2007 7:40 pm

Thanks for that - when engine cold starts on first try. No black smoke or gas mell. Have been looking and would appear not to be sparking - someone suggested crank sensor could this be it?

Spider wrote:How many mile you have on this engine?

Dirty/sticking injector/s will behave this way.

When its cold? does it start at the first click of your starter ? or do you have to crank it over a few times ?
Have someone watch the tailpipe when you start it (cold) for black smoke and also check for a raw gas oder.

Welcome walneybells !

Spider · Post by **Spider** » Thu Oct 11, 2007 8:18 pm

walneybells wrote:Thanks for that - when engine cold starts on first try. No black smoke or gas mell. Have been looking and would appear not to be sparking - someone suggested crank sensor could this be it?

Spider wrote:How many mile you have on this engine?

Dirty/sticking injector/s will behave this way.
When its cold? does it start at the first click of your starter ? or do you have to crank it over a few times ?
Have someone watch the tailpipe when you start it (cold) for black smoke and also check for a raw gas oder.

Welcome walneybells !

You didn't answer the mileage question.

With such little information, it's very difficult to diagnose your problem without knowing the service history of your vehicle and how much maintenance and or repairs have been done.

Please give us more service history/dealer recall history information.
Try searching this forum for similar problems and look in the "FAQ" and "How-To and Modifications" sections as well.

Were here to help.

P.S. Is your CEL (check engine light) coming on or flashing?

walneybells · Post by **walneybells** » Thu Oct 11, 2007 8:39 pm

Hi - sorry mileage is about 54,000. CEL light not flashing or staying on. Only had car a couple of weeks no service history passed onto us! Gonna replace crank shaft sensor 2moro and see how it is then. Thanks for your help so far.

Spider · Post by **Spider** » Fri Oct 12, 2007 3:01 am

Not high mileage, does your engine run well after it's started ? Are you getting good gas mileage ? Does it seem to have decent power ? You could eliminate questionable things like replacing the fuel filter. It may have never been replaced and is not allowing a good flow of fuel.
Spark plugs could be original.

For recall information for your vehicle:

1)...write down your "VIN" number (it's on the door frame, or your ownership papers)

2)...go here:
http://www.daewoous.com/Default.aspx (This is Daewoo of America, If you live in a country other than America? you may have another way of checking for dealer recalls. I don't know.) Hopefully, other Daewootech forum member will advise you.

3)...click "Owners" (and register)

4)... after your registered, go back to "Owners"

5)...click on "Recalls"

6)...submit your VIN number

keep us posted

GsiTurbo · Post by **GsiTurbo** » Fri Oct 12, 2007 3:06 am

There are two coolant temp sensors on the motor - one for the gauge (single pin), and one for the ECU. They are both located underneath the coilpack unit. Which one has been replaced?

walneybells · Post by **walneybells** » Fri Oct 12, 2007 9:26 pm

Replaced the one with two pins and have ordered crank shaft sensor. Can anyone tell me where the crank shaft sensor is on a 2.0CDX please? Am seeing a guy 2moro who has worked on Daewoos b4 so he should know but just in case??

Thanks

GsiTurbo wrote:There are two coolant temp sensors on the motor - one for the gauge (single pin), and one for the ECU. They are both located underneath the coilpack unit. Which one has been replaced?

walneybells · Post by **walneybells** » Sat Oct 13, 2007 10:01 pm

Engine runs extremely well with good power. No problems with car except that you can't restart it once it's been running a while. It's driving me mad and no local garage has software for diagnostics!!! Have tested for spark when it won't start and there's not one could it be immobiliser problem?

Spider wrote:Not high mileage, does your engine run well after it's started ? Are you getting good gas mileage ? Does it seem to have decent power ? You could eliminate questionable things like replacing the fuel filter. It may have never been replaced and is not allowing a good flow of fuel.
Spark plugs could be original.

For recall information for your vehicle:

1)...write down your "VIN" number (it's on the door frame, or your ownership papers)

2)...go here:
http://www.daewoous.com/Default.aspx (This is Daewoo of America, If you live in a country other than America? you may have another way of checking for dealer recalls. I don't know.) Hopefully, other Daewootech forum member will advise you.

3)...click "Owners" (and register)

4)... after your registered, go back to "Owners"

5)...click on "Recalls"

6)...submit your VIN number

keep us posted

daewoomofo · Post by **daewoomofo** » Sat Oct 13, 2007 11:24 pm

if there are local garages that have obd 2 diagnostic equiptment they can run diagnostic on it. if they say they cant tell them they are full of shit and to do it, lol