03 warrior 1700 low fuel light comes on with r.p.m.s up engine stumbles?? fuel filter location?fuel pump check?code retrieval? checked all fuses,gas tank full.checked plug ins,wireings for lose connections and bare wires,all check out o.k. disconected battery.....reconected battery,,engine starts..runs fine...low fuel light comes on when r.p.m.s are advanced???? engine stumbles.??? help.

Then your fuel pump is not working, or your fuel filter is blocked. You will probably have to check your fuel pump circuit if you have no fuel pressure in the fuel rail, where the injectors sit. There is a fuse for the pump, usually in the under hood fuse/relay block. That is probably also where the fuel pump relay is located. You should hear or feel this relay click when the ignition key is cycled from off to on. Also, when the key is turned to on, you should hear the fuel pump in the gas tank turn on for about 2 seconds. This will put the pressure in the gas in the fuel rail, for starting the engine. If you don't hear the pump turn on for that 2 second period, it is probably a bad fuel pump. But know the fuse is good first.

check alternator,check battery connection,fuel filter,air filter,check coils and module,spark plugs,last thing crankshaft sensor.

Check engine light does not have to come on unless the misfire monitor reaches a certain count.There it will pend a misfire code,and who know what code you get may just tell you P0300 random misfire,we know its misfiring .But we got the symptoms, The 2.2 is sensitive to water in the fuel system when you change the fuel filter were you able to get a sample of at least some.Where the ignition coil sits do you hear any arc at idle(in park) that can tell you you will need sparkplug wires. you can also use a spray bottle of water and spry it on the wire.see if that exposes any arc from the sparkplug wire. The fuel pressure on the 2.2 has to be 56-62 psi.This is the necessary pressure. Also the TPS can cause you to stumble intermittently and this is a common failure on the 2.2 engines

Stumble off idle,you have a misfire at idle the ignition system is of concern this will include plug wires sparkplugs cap and rotor,

Gabriel,

The first question I have is how many miles on the Lumina? If well over 100,000 Miles I strongly suspect a clogged Catalytic Converter. Before all the routine maintenance was the vehicle running normally? Another condition could be a worn out fuel pump. These are electric pumps in the fuel tank and typically will eventually fail to supply adequate fuel pressure and volume of fuel required for normal running conditions. Have an ASE Certified Technician check the Fuel Pressure and Flow Rate to determine if it is within manufacturers specifications. I had a 1994 Pontiac Transport with 175,000+ Miles and the Fuel Pump failed. I replaced it myself and then the Catalytic Converter clogged up. Both problems caused low power and stumble conditions.

Does the Check Engine Light come on when the Ignition switch is turned on before starting the engine? If not, you obviously have a bad bulb in the Instrument Cluster. This requires carefully removing the Instrument Cluster and partial dis-assembly to replace the bulb(s). I strongly suggest replacing ALL the Bulbs in the instrument cluster because of the age of the vehicle.

Is the 3.1L engine fuel injected or carburated? If FI see a professional.

Rapid Robert

Check for diagnostic trouble codes. Replace the fuel filter, and have the fuel pressure checked. Also check timing with a timing light.

PO193 ---Fuel Rail Pressure Sensor Circuit
High Input (FRP)

Check Fuel Pressure at Rail

When your vehicle has low power output it can mean several different things are occurring. You should know while your car has low performance it could be damaging components while you drive. Example: The emergency brake is on and you did not notice, this condition will burn up the rear brake pads or shoes and cause premature emergency brake failure. Or, the fuel filter is clogged causing thefuel pump to labor which can cause premature fuel pump failure. There are basically two kinds of low power conditions either the engine is running rough causing low power or the engine is running smoothly but still has low power. If the engine is running smoothly but has low power you are in the right place.
Step 1 - Scan for Trouble Codes - Check to see if the "service engine soon" light is on, if not continue to the next step. If the "check engine" (same thing as a service engine soon light, different manufacturers call it different things) light is illuminated you need to have the computer scanned for trouble codes. Use a simple scanner tool to retrieve trouble codes and check if they relate to the specific problem, like a fuel pump circuit failure code. If a trouble code is present but does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the engine is running properly. The reason we repair non-related codes after the engine is running properly is because sometime false codes can be triggered by a poorly running engine. Once the engine is running properly the code present might cycle and turn itself off. You might say "if the engine isn't running right shouldn't it have a check engine light and a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the intake or exhaust valve operation fails the computer cannot detect the failure because the problem is not sensor related, so the engine has no power and the computer thinks everything is ok with no codes. If the trouble code retrieved relates to a low power like a Mass Air Flow (MAF) sensor or ignition coil system failure repair these problems and re-test system. If no trouble codes are present proceed to the next step.
Step 2 - Check the Air Filter - A plugged air filter not allowing the proper amount of air into the engine. If air is not allowed to enter the engine's intake it will limit the engine power output. To check your engine air filter open the hood and remove the air filter from its housing and inspect, replace as needed and recheck.

• Step 3 - Check the Fuel Filter - Several conditions can cause low power, one of the most common reasons is a clogged fuel filter not allowing the proper amount of fuel pressure and volume into the fuel injection system. To check for this condition remove the fuel filter and drain excess fuel from the filter, next wipe any excess fuel from the filter. By blowing through the filter you can determine if the filter is clogged, you should be able to blow through it very easily. If you cannot blow through it or it is difficult replace the fuel filter with a new unit and recheck system. Some fuel filters utilize a special release tool available at our tool store: Fuel filter release tool, if the fuel filter is ok proceed to the next step.
  
• Step 4 - Check Fuel Pump Pressure and Pressure Regulator - Fuel pump is worn providing low fuel pressure to the fuel injection system. A fuel pump that is faltering providing low system fuel pressure/volume will cause low power. Your car's engine depends on constant fuel under pressure to supply the fuel injection system properly. Your car's fuel pump performs this action and is located in or near the gas tank. The injection system meters fuel through the injectors and into the engine. Many engine run drivability problems can be related to a weak or failing fuel pump. Problems can range from hard starting in the morning, low power and stalling while driving. Most vehicles have a fuel pressure test port somewhere on the fuel rail, use a flashlight to locate it on your engine or consult a repair manual. Also test the fuel pressure regulator performance; if the regulator is stuck or leaking the engine will not receive the additional fuel needed for power. If the fuel system pressure is ok proceed to the next step.
• Step 5 - This step is for adjustable distributor type ignition systems only. If your car has a DIS (distributor-less ignition system) skip this step. Ignition timing is very important in achieving maximum power from your engine. If the timing is adjusted too far advanced or retarded (in front or behind the timing mark) in relationship to the engine crankshaft it will have low power output. To check your engines timing adjustment a timing light is needed. Once the timing light is hooked up to the battery locate the under hood emissions sticker that has the engine timing specification and instructions. If you can't find the under hood sticker or it is illegible consult a car repair manual. If the engine timing is ok proceed to the next step. If the engine timing is way off (20 degrees or more) check the timing belt or timing chain, the crankshaft camshaft correlation might be o