2003 olds alero 3.4l v6 symptoms include : loss of horse power, mass hesitation, surging, un responsive idle.

is this AFRICA KB240 , 2.4L petrol.?????????
we have no KB here in USA not a one. no parts, no books on it. (heck no WIKI on KB. ouch)
so it starts and drives ok/
but idle surges (up/down RPM) means PCM can not control IDLE RPM at all, and has many causes.
you can drive it fast and even up hills or at WOT.?

but only stopping at say a stop sign the engine surges.
well lets work that 1 problem if is just 1.
EGR struck open, is common. (if has one)
IAC stuck the idle air controls valve is stuck and needs cleaning, of gunk off it
thermostat not bad, 180F (82c) is good but 150 is bad. hot normal engine.
VVT failing . if has VVT. (cam timing variable)
VVT engine most times have no EGR valve.
spark wires bad, seen on new cars with no COPS.
seen with COIL packs and 4 HV logs and 4 HV wires
and HV wires bad, or just one.
as I said no books here on KB at all. zero.
as in service manuals.

There are a few possible reasons why your 2003 Mitsubishi Express van might be having a lack of power, losing throttle, and stalling. Bad spark plugs: Spark plugs are responsible for igniting the fuel in your van's engine. If the spark plugs are bad, they will not be able to ignite the fuel properly, which can lead to a loss of power, stalling, and other problems. Bad fuel filter: The fuel filter removes impurities from the fuel before it enters the engine. If the fuel filter is clogged, it will restrict the flow of fuel to the engine, which can also lead to a loss of power, stalling, and other problems. Low compression: Low compression can also cause a loss of power and stalling. Compression is the force that pushes the piston down in the cylinder, which is necessary for the engine to run properly. If the compression is low, it will be harder for the pistons to move, which can lead to a loss of power and stalling. Clogged injectors: Fuel injectors deliver fuel to the engine in a fine mist. If the injectors are clogged, they will not be able to deliver the fuel properly, which can lead to a loss of power, stalling, and other problems. Mass air flow sensor: The mass air flow sensor measures the amount of air entering the engine. If the mass air flow sensor is faulty, it can provide the wrong information to the engine's computer, which can lead to a loss of power, stalling, and other problems. Throttle body: The throttle body controls the amount of air that enters the engine. If the throttle body is dirty or malfunctioning, it can restrict the flow of air to the engine, which can lead to a loss of power, stalling, and other problems. If you are experiencing these symptoms, it is important to have your van diagnosed by a qualified mechanic to determine the root cause of the problem. Once the cause of the problem has been identified, the mechanic can recommend the necessary repairs. Here are some tips to help prevent these problems from happening in the future: Change your spark plugs and fuel filter according to the manufacturer's recommendations. Keep your van's engine clean and well-maintained. Avoid running your van on low fuel. If you notice any problems with your van's performance, have it checked out by a qualified mechanic as soon as possible.

There are a few possible reasons why your 4M41 2003 model might be cutting and idling high after 5 minutes. Clogged fuel filter: The fuel filter removes impurities from the fuel before it enters the engine. If the fuel filter is clogged, it will restrict the flow of fuel to the engine, which can lead to a variety of problems, including cutting and idling high. Bad spark plugs: Spark plugs are responsible for igniting the fuel in your engine. If the spark plugs are bad, they will not be able to ignite the fuel properly, which can lead to a variety of problems, including cutting and idling high. Low compression: Low compression can also cause a variety of problems, including cutting and idling high. Compression is the force that pushes the piston down in the cylinder, which is necessary for the engine to run properly. If the compression is low, it will be harder for the pistons to move, which can lead to a variety of problems, including cutting and idling high. Clogged injectors: Fuel injectors deliver fuel to the engine in a fine mist. If the injectors are clogged, they will not be able to deliver the fuel properly, which can lead to a variety of problems, including cutting and idling high. Mass air flow sensor: The mass air flow sensor measures the amount of air entering the engine. If the mass air flow sensor is faulty, it can provide the wrong information to the engine's computer, which can lead to a variety of problems, including cutting and idling high. Throttle body: The throttle body controls the amount of air that enters the engine. If the throttle body is dirty or malfunctioning, it can restrict the flow of air to the engine, which can lead to a variety of problems, including cutting and idling high. If you are experiencing these symptoms, it is important to have your vehicle diagnosed by a qualified mechanic to determine the root cause of the problem. Once the cause of the problem has been identified, the mechanic can recommend the necessary repairs. Here are some tips to help prevent these problems from happening in the future: Change your fuel filter according to the manufacturer's recommendations. Change your spark plugs according to the manufacturer's recommendations. Keep your engine clean and well-maintained. Avoid running your vehicle on low fuel. If you notice any problems with your vehicle's performance, have it checked out by a qualified mechanic as soon as possible.

1999 Oldsmobile Alero Stumble and Loss of Power 3000rpm

www.2carpros.com/.../oldsmobile-alero-1999-oldsmobile-alero-stumble-...
Sep 28, 2008 - Engine Performance problem 1999 Oldsmobile Alero 6 cyl Front ... Hey All, Had a very rough running Mazda 626 on LPG, engine code FP.

1999 Oldsmobile Alero High Idle Fix - YouTube

? 1:47
www.youtube.com/watch?v=xBV9BmjFZVs
Jul 4, 2010 - Uploaded by GrindTimeAuto
1999 Oldsmobile Alero High Idle Fix ... How To Fix Or Prevent Stalling, Surging Or Rough Idle, Cleaning Throttle Body and MAF Sensor ...

Hello, here are three of the most common causes for loss of horse power.

1. Idle air control valve. ( sometimes they can be removed and cleaned )
2. MAF, ( mass air flow ), sensor. ( sometimes they can be removed and cleaned )
3. O2, ( oxygen sensor ). ( needs to be replaced )

All three of these things are part of your emission system, and all three of these things, if faulty or dirty can prevent the EMC, ( electronic control module ), from determining the proper fuel/air mix ratio. The ratio should be 1 part fuel to 14.7 parts air. A bad fuel/air mix can cause the following.
a. Bad idle.
b. Loss of power/poor acceleration.
c. stalling/fake stalling.
d. Poor gas mileage.
e. Prevent engine from starting.

I hope this helps you.
Donnie

I would test the fuel pump.

P0171 - System Too Lean (Bank 1)
Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.

Symptoms: You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

Causes: A code P0171 may mean that one or more of the following has happened:
* The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
* There could be a vacuum leak downstream of the MAF sensor.

Possible solutions include:
* In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
* Inspect all vacuum and PCV hoses, replace if necessary
* Check for a dirty fuel filter and proper fuel pressure


Hope this helps (remember to rate this answer).

tsb remove dist cap ,clean out breather holes i replaced cap and rotor at the same time. chevy has the problem with the 4.3l astro,s and blazer i have both.fixed the problem when buying the cap and rotor the directions inside will also tell you how to fix

Check the timing and compression of the engine. It sounds like you either have a blown head gasket or a the timing jumped.

check mass air flow volt at idle