I need help BAD!!!!!

joe guldin · Post by **joe guldin** » Sun Nov 02, 2008 7:55 am

Ok I have a 2001 Lanos 1.6. Car was running fine then it started running rough stalling somtimes ,sometimes it would not crank. Had a code for the camshaft positioning sensor, fixed that. Now the car idles fine but if you stick your foot in the gas it boggs down and wants to stall. Changed out plugs and wires, No better. Changed out fuel filter, No better. Please if anyone knows what else it could be let me know. Where I live no mechanics will touch a daewoo.

Pir0 · Post by **Pir0** » Sun Nov 02, 2008 8:52 am

Check the timing. And the mechanics were you are are retards. Daewoo's are a gift to work on and are pretty much easy money for a mechanic.

Big Jeff · Post by **Big Jeff** » Wed Nov 05, 2008 12:19 am

some will charge over £600 just to do the timimg belt, just because there have to move some pipes out the way

you should ask your mechanic if they would touch a early astra (or what ever there are call where you are) if he says yes than he should do a lanos

Post by **PrecisionBoost** » Wed Nov 05, 2008 6:13 am

Daewoo is a GM product ( sorry guys )..... your engine may have been assembled in Korea but it's just a copy of a GM engine.

Same with the chassis.... it's the same as an Astra MkII everywhere else in the world..... in the USA it was the same as an 89 pontiac lemans.... in fact your 1.6L is simply a newer version of the old 8V TBI 1.6L in the Lemans.... technically the Pontiac Lemans is a Daewoo.... also assembled in Korea.

So..... lemans parts work.... lemans is a GM car.... Chevy Aveo has the same 1.6L engine... it's a Daewoo Kalos.... but again.... all GM parts.

As far as what could be wrong.... well..... there are lots of things.... many you have covered allready.

So you changed plugs wires and fuel filter.... definitly a good start.

Do you have any tools?

Ideally it would be nice to measure fuel pressure and engine compression... these are pretty cheap tools and a good investment.

Basicly in most cases it's either 1) Fuel 2) spark 3) Air

Low fuel pressure would point to a bad fuel pump.... or perhaps the filter on the pump that sucks the fuel from the tank.

Perhaps a bad batch of gasoline ( water contamination or perhaps debris in the fuel )

Another posibility is the injectors.... if debris got through it could have gummed them up.

So.... you could try a batch of premium gasoline with a fuel system cleaner ( additive )

What else.... well I guess the air filter should be obvious.

As far as spark.... you can buy a "spark tester" fairly cheap.... usually under $20.... they usually have an adjustable center which changes the distance the spark has to jump..... that way you can tell if the spark is strong or not.

If the spark is weak it could be the coil pack.

I suppose the IAT ( intake air temp ) sensor could give you problems..... if it's damaged it could be causing fueling issue.

Another posibility is the throttle position sensor

Does the car run better or worse on startup? ( does it run better after it's warmed up ? )

If you haven't reset your ECU I would do that right away...... just unplug one of the battery terminals over night to kill the ECU power..... that should get rid of any bad codes or situations where the ECU is running in a wierd "safe mode"

Hopefully this helps..... unfortunatly it's not allways easy to figure out what's happening..... sometimes you have to take it one step at a time

joe guldin · Post by **joe guldin** » Sat Nov 08, 2008 9:36 am

OK found out it's my fuel pump. Do i have to drop the tank to get to the pump. Also will I need any special tools for the job. I would like to thank everyone for the help on this.

daewoomofo · Post by **daewoomofo** » Sat Nov 08, 2008 10:52 am

to change your fuel pump you will need to remove the bottom part of your bach seat. there is a bolt in the center of the part where the back meets the lower part.

then there are 2 clips under the front part of the lower piece, you will need to just pull up on them. once the lower part of the back seat is out, ther is a access hole that you can get the fuel pump out of.

from there you "shouldnt" need any speacial tools, but i cant say for sure since ive never done a lanos fuel pump. good luck, keep us posted

joe guldin · Post by **joe guldin** » Tue Nov 11, 2008 8:32 am

Ok got my fuel pump in. But I'm not getting any fuel think I may of done something wrong. Does anyone have a diagram or a link where I can see how the fuel pump assm goes back togheter just to double check my work. Pump kicks on you can hear it just no fuel coming out. I would greatly appriciate the help. Thanks

Daniel · Post by **Daniel** » Tue Nov 11, 2008 10:43 am

Look in the FAQ section for manuals.
http://www.daewootech.com/forum/viewtopic.php?t=5085 .
Did you changed the whole assembly or just the "motor" inside? As you can hear the pump I would check for polarity on the motor.
Here is a bulletin that could be of some interest.
http://rapidshare.com/files/162703839/B ... S.zip.html .

Daniel