Why does Daewoo Nubira have trouble driving right away in cold high RPM no speed for about 10 minutes sometimes once stop at stop sign car will not go again?

Answer 1

There could be several causes for this problem. There are many things that can cause this but I can give you a list & you can at least check them off one buy one.

1. A faulty spark plug, only firing now & then

2. A small short in one or more of your spark plug leads

***3. A failing Fuel pump

4. The speedo sensor that sits on the gear box. This will affect the idle if faulty.

5. A faulty or weak battery

6. The throttle body sticking

7. A damaged exhaust manifold gasket caused by a loose manifold stud or something similar

8. Timing gear adjuster could be faulty. DAYCO sell the complete timing gear kit. They are the only company that do.

9. Dirty fuel or fuel filter. I run my Daewoo on E10 fuel only. It keeps the fuel system & injectors clean. I know this is not recommended but my engine prefers E10 to any other fuel. Most fuel cleaners have ethanol in them anyway. I see it as a fuel system cleaner each time I fill up. I have never had any problems with blocked or damaged injectors & I have had this Daewoo for over two years now. We always used E10 in the other 2 Daewoo Nubiras that we owned. Never had a problem.

10. O2 sensor playing up but not enough to light up the "check engine" light

If you are getting a check engine light, have your computer scanned. That's the quickest way to identify a fault because each time the check engine light comes on, depending on the problem, the computer will log a specific code for that problem. I have had all of these problems & each one caused the problem that you are having so it could be one or several things but I remember when my fuel pump failed, 3 days before Christmas last year & it behaved as if it had dirty fuel now & then but not all of the time. It had moments of sluggishness now & then. The pump will suddenly fail, without warning. A good sign is if your Nubira is suddenly using a little more fuel than it normally would, especially when driving around the town. Every now & then, the engine would splutter but it did start using more fuel than normal. Open road driving was pretty good although it was still using a little more than usual, but it was just the town driving where it really guzzled the fuel. After my mechanic changed the fuel pump, it was great. Then I noticed that it wasn't using enough fuel. It was literally running on the smell of an oily rag. I knew it was dangerous to allow the engine to run so lean so I went back to my trusty mechanic & he did a pressure test via the water reservoir. When it came back fine, he did another test. This was a piece of very clever equipment that looked like a turkey baster. Inside it was some green liquid. This liquid picks up exhaust fumes in the water. He sat it onto the water reservoir & pumped at the rubber hand piece. Sure enough, the green liquid turned yellow, showing that I had exhaust fumes flowing into the water. In other words, my head gasket had failed but in the form of allowing the exhaust to leak into the water & not the water leaking into the oil. I have been told that it is similar to a "water injection" engine but I do not know how true that is. So, I bought a complete VRS kit & had it fitted. My water reservoir had also perished at the lower hose connection so I changed that as well. The new bottles have a copper sleeve that sits in the hose connections & in turn, gives more strength to the connection. When my mechanic did the head gasket kit & water reservoir, I also bought a full set of water hoses & head bolts. If you are going to something that so big, you are better off to change all the extra parts to prevent any further problems. I would go to the fuel pump first. I know my Daewoo wasn't happy before it failed but we couldn't identify the problem until it did. I have had alot of work done to my Daewoo but I would never sell it. If I bought another car, I would probably go theough it all again. At least I know that my Nubira is running at it best possible peak & I always change the oil & filter at 5,000 kms. Each time I use an emgine flush too. This keeps the engine as clean as possible. The oil usually stays pretty clean throughout the 5,000 kms & it is still reasonably clean when my mechanic changes it. I can do it myself but a past bad experience with an insurance company has taught me to have my oil changes documented by my mechanic.

If you live in NSW, I have found a brilliant parts supplier who usually have whatever you need for your Daewoo. They can't get some of the parts because they are usually a genuine part only like hand brake cables etc. although apparently they can be made up for the car. They just aren't an "off the shelf" after market part. The staff at Bursons Auto Parts can usually get the parts you need. I have found the staff at Bursons to be the best. They can tell me on inquiry if the part I'm looking for is a genuine part or if I can get it after market. they really do look after you & your Daewoo. Well, Good Luck! I hope that this has helped you to find the problem. As I said, I would go to the fuel pump first.