Why does my Subaru stall when it warms up?
Check them. Fuel pump could be running great and supplying sufficient fuel a for cold running engine and then as it heats up, with the engine, expansion of the metals in the pump or module reduces the pump output. Check the fuel pressure cold, then after the engine warms up and acts up.
What makes a car stall in warm weather?
The stalling may result from a fuel or a sensor related problem. The timing of a stall is never convenient, and can be dangerous. A vehicle can stall anywhere. Have the problem checked out after the first occurrence. The Hall Effect sensor can be the source of a stalling problem.
Why does intermittent stalling occur in a car?
One of the more unusual causes of intermittent stalling we’ve heard about is a defective vehicle speed sensor. When the vehicle stops moving, the PCM may not engage the idle speed motor (carbureted engines) or idle air bypass motor (fuel injected engines) so the engine will idle normally.
What causes cold stalling on a fuel injected engine?
On fuel injected engines, cold stalling can also be caused by conditions that upset the air/fuel mixture. This includes vacuum leaks or unmetered air entering the intake manifold downstream of the airflow sensor, a faulty throttle position, MAP or oxygen sensor, dirty fuel injectors,…
Why does my Subaru WRX keep stalling?
One of the most common issues your Subaru WRX is likely to develop is a stalling problem. The most challenging part of diagnosing a stalling problem is reproducing the conditions that led to the stall in the first place. Stalls can happen at any time, and it can be incredibly jarring when it does happen.
One of the more unusual causes of intermittent stalling we’ve heard about is a defective vehicle speed sensor. When the vehicle stops moving, the PCM may not engage the idle speed motor (carbureted engines) or idle air bypass motor (fuel injected engines) so the engine will idle normally.
Is there a way to diagnose intermittent stalling?
Diagnosing an intermittent stalling problem can be a challenge, especially if the engine only stalls occasionally (and at the least opportune time). And if there are no pending codes, hard codes or history codes in the vehicle’s computer to give you some direction, you may find yourself guessing at a diagnosis.
What causes intermittent stalling on a Ford Escape?
Ford has also issued a recall (04S13) for 2001-2003 Ford Escape sport utility vehicles with 3.0L V6 engines for an intermittent stalling problem. The stalling typically occurs while decelerating at speeds below 40 miles per hour. The problem is caused by the calibration of the idle air control valve and evaporative emissions system.
Check them. Fuel pump could be running great and supplying sufficient fuel a for cold running engine and then as it heats up, with the engine, expansion of the metals in the pump or module reduces the pump output. Check the fuel pressure cold, then after the engine warms up and acts up.
How can I tell if my Subaru is overheating?
You can get another fairly definitive test response by having a hydrocarbon sensor “sniff” the bubbles emanating from the coolant (rad cap or expansion tank if visible) to show exhaust gases present in the coolant. That nails the diagnosis.
Why does my Subaru Outlander have a bad coolant leak?
If it is loosing coolant and it is not a leak, it is most likely a head gasket issue. When having a bad head gasket coolant sometimes goes from the head gasket leak directly to the combustion chamber and the problem will not put oil in the coolant and vice versa. With the poor history Subaru has with head gaskets, this is the most likely cause.
What should I do if my Subaru water pump overheats?
Also note that Subaru water pumps are also ultra-reliable, so when you replace the HGs DO of course replace the t-belt (since it comes off!), and test its tensioners, but leave the water pump alone to save a few bucks. Sounds like heresy, but remember that Subies are unlike Hondas, Toyotas and VWs that eat water pumps for lunch.
How to get a temp light on a Subaru Forester?
Turn the ignition switch OFF (Went onto side of road – put it in park, turned off car, removed key) 3. Turn the ignition switch ON (Waited 5 seconds, then put key in and turned on ignition so dash lights up) 4. Start the engine (started car) 5. Drive the vehicle at speeds greater than 12 MPH (put car into D and drove for about 30 seconds at 40 mph)
Why does the ECM slow down a Subaru?
If the systems do not have enough electrical flow for use, you get a dumbed down car. Think in relationship to a laptop or cell phone with a low battery, it slows down. Same with the ECM. And if the electrical flow is low, solenoids and switches will either work poorly or not at all.
What causes a Subaru to run pig rich?
If the sensor is constantly telling the ecu that the coolant is too cold and placing the engine in “warm up mode” even when the engine is at operating temp, it will cause it to run pig rich when it is unnecessary, like driving an older car with the choke open constantly.