It will also trigger if there is an issue with the electronic throttle, the accelerator pedal or the throttle module. Can't afford to dump thousands into this thing for whatever mechanic of the day thinks may be the problem only for it to return later. One of the most popular triggers of limp-in mode is loose cables, harnesses, or clamps. Can anyone teach me or try to explain to me how to use my multi meter functions and how I can diagnose the problem so I'm able to get my cobalt back up an running! Watch this: 04-19-2015, 06:51 PM. I have a 2009 Chevy Cobalt bought used a year ago from a dealership near me. I notice this is a truck he's working on. The car suddenly slows to about 5 mph while going 40, lunging forward, the traction lights are blinking, check engine light still on, and screen switching back & forth between "service traction" & "engine power reduced! " Looks like the technician is a noob. Was the service engine light flashing before it quit? A failing or dirty sensor can put too much or too little fuel into the engine. Reduced engine power may cause one or more of the following conditions: * Acceleration limiting-The ECM will continue to use the accelerator pedal for throttle control, however, the vehicle acceleration is limited. Make sure your engine has enough oil. And finding these faults could be very expensive as well.
Ok, so I got the Engine Power Reduced code on my dash. The mass air flow sensor is a wearing part. Transmission now shifts smooth. At FIXD, our mission is to make car ownership as simple, easy, and affordable as possible. Replacing the air flow sensor is the best alternate when you discover it is dirty and enjoy a return to your standard engine power! Top speed capping at a lower-than-usual point. Faulty Wiring: Exposed or damaged wires can cause issues with the any of these components and will possibly trigger the Reduced Power light. If you are still receiving a reduced engine power message, you might have to fully replace your mass air flow sensor to resolve the issue. I turn the car off again & think GD these recalls! Oxygen sensors detect how much fuel the engine is burning, while mass air flow sensors measure the amount of air entering the engine.
I have another fuel tank n pump from a 2006, but I realized the 2006 is a fed emissions car, an with mine being a pzev cali car, I really can only swap a limited amount of sensors or parts in general. Recommended video: Note (MAP Sensor): If you can't find MAF sensor in your vehicle, it is possible your vehicle may not have one, especially if its an older vehicle. 2Loose cable connections. Pulled throttle body off, just 4 bolts, really easy. If possible, troubleshoot these problems or seek help from digital platforms. Solutions to Reduced Engine Power Light. Your driving accordingly. When driving fast in heavy rain, water can occasionally pass through the air filter, which can severely impair the function of the MAF sensor. Then this weekend i bought a new gas cap and my car started my car wouldn't do anything. Less common causes are faulty throttle position sensor (TPS), bad ignition coils, dirty fuel injectors, clogged engine oil filter, transmission problem, worn piston rings and blown head gasket. You could also check to make sure the PCM is connected, no loose connections. Transmission shifting.
Ideally, when these lights come on, they mean your vehicle's performance has been reduced to avoid damaging and wearing off the engine. 04-21-2015, 07:33 AM. With a noticeable loss of performance and high mileage, a defective MAF sensor should definitely be considered. The idea behind the reduced engine power condition is to allow you to limp your Cobalt into the shop or back home. It's the throttle body sensor which means you have to get a whole new throttle body since General Motors decided to be Geniuses and make the sensor and the throttle body one piece... More like one piece of crap nice work geniuses... If you are still wondering what causes this trend, read on. It's too dark outside right now for me to look at the battery, but i will try to disengage the black wire in the morning. Posts: 308. ok so my 05 (2. If you don't follow the maintenance schedule of your Cobalt and don't change the fuel filter on time, the permeability of the filter drops and so does the fuel pressure in the engine. Reduced power, service ESC... The engine runs too "lean" or too "rich". It may be necessary for the mechanic to test drive the car to verify the complaint and provide an accurate diagnosis. In days-gone-by of ancient vehicles, mere changing of the spark plugs, plug wires or even the carburetor would bring about a drastic change in the 'drag' movement. Normally, the problem is minor.
Called to make an appointment with the dealer for an hour later thinking I should be safe to at least make it there- 4 miles. The vehicle will identify the problem automatically, and even the smallest imbalance between sensors will trigger this mode. Rear of engine on drivers side) It started higher than normal, but hey!!! 06 Cobalt: "Engine Power Reduced/Engine Disabled". These are the most common problems that cause reduced engine power. Want an expert mechanic on speed dial who can walk you through DIY repairs and answer any questions?
OBDII scan tool and I checked the code P2135 and it says Throttle / Pedal Position Sensor/ switch A/B Voltage. Always make sure your car is off, in park, and has cooled down before touching or removing any parts. 22] X Research source Go to source. Any insight from all the Chevy savy/car brainiacs out there?
I'll park and turn off engine wait a while and turn it back on and I can drive again with coolant temps around 200F. As the mileage increases on your Cobalt, it can happen that increasingly inaccurate values are sent to the engine control unit. I have just installed a pretty high powered audio system (about 2800 watts RMS combined. The throttle blade is spring loaded in both directions, and the default position is slightly open.