Daewoo lanos problem

SOURCE: Integra revs RPMs when idling

idle air control motor or just a plain old vacuum leak

SOURCE: Daewoo Lanos 1.4 1997 Idling really high - Idle Rev Valve?

hi there the problem describe is a common problem you need to take the car into your dawoo/chevrolet dealer as there was a reprogramme that need s to be downloaded to your ecu to fix the problem should only take about 30 mins so should not cost you to much i used to have around 10 to 15 a week to do

SOURCE: 2001 A4 TDI, 120000 miles, sometimes, maybe once a

In the most cases for Audi A4 1.9 TDI the turbocharger is responsible for engine losing power.
The car goes in "limp home" mode!!!
After scan the EDC-15P engine control unit with a VAG or KTS -BOSCH diagnosis tool you will find this: Fault code: P1557-Turbo Boost pressure control exceeded
1. Engine stopped and ignition switch off. Check all pneumatic connections and hoses between turbocharger actuator = pressure unit for boost-pressure control, boost-pressure control solenoid valve, vacuum reservoir, EGR control solenoid valve, intake-manifold flap solenoid valve, EGR valve with throttle - part of intake manifold. Also the vacuum connection between tandem pump and brake booster. If you find something wrong replace parts. If not go to step 2.
2. Extract the hose of the turbocharger actuator = pressure unit for boost-pressure control part of turbocharger. Instead of the original hose you must place another 1 meter long hose with the same inside diameter, and then you check to inspire yourself the air from the other one extremity of this hose. The mechanical connecting rod of the turbocharger actuator must have a smooth and whole motion. If you can do that with your mouth, then you must replace the boost-pressure control solenoid valve. If you can not reach this with your mouth, then you go to step 3.
3. This is the most difficult work. The problem is that the soot particles deposits inside the turbocharger plugging the variable nozzle geometry mechanism = adjustable vanes of the turbine. If the turbocharger actuator is not able to adjust the turbine vanes the charge air pressure increase too much and ECU (engine control unit) go in "limp mode" = engine protection software. As a result the "limp home" mode engine still running until you turn the engine off (ignition switch off) and back on when the "limp mode" is deactivated, but the fault still remain in ECU memory!
4. You must be able to extract the turbo from the engine and then to disassemble the turbocharger, clean inside adjustable vanes mechanism and refit all.

Lodhi Autos

• 992 Answers
• Posted on Feb 27, 2014

SOURCE: daewoo lanos crank

Please do the following.
- (Reset memory) Remove the negative battery terminal for 30 Seconds, reconnect and start the engine. If problem persists,
- Check the resistances of high tension cords (DMM Range = 100 K, Resistance - 10 K Ohms- 30 K Ohms).
- Check the distributor cap, rotor for any crack or corrosion, and module.
- TP position sensor, and MAP sensor.
- Check vacuum hoses and intake manifold for air leakage.
- Check Idle air control valve.
- Check spark plugs gaps.