Why does my fuel pump run hot when I shut off the engine?
This is due to the fact that when you shut off the engine with a low fuel level; the fuel can drain from the priming chamber designed into the fuel delivery system. So when you restart your car, the pump runs hot and un-primed until it can refill the fuel chamber. Over time this will burn out the pump motor.
Why does my car engine not start when hot?
So the ECU thinks the engine is not spinning and doesn’t fire the ignition; hence the engine does not start. If it is a crankshaft position sensor it will be located somewhere on the circumference of the freewheel; if it is a camshaft position sensor, it may very well be located inside the distributor.
What happens if you don’t shut off the engine?
The car drives smooth, good responses, idle RPM is stable. Car will keep running for long miles smoothly if don’t shut off the engine. just won’t start when hot, but will start when cool.
Why does my truck shut down when it gets hot?
Same exact problem on my 95 f-150 4.9L. Runs great first start but after 2 miles or if very hot outside, it heaves and misses and eventually shuts down. Starts after sitting for 45 minutes again. I did replace rotor, cap wires plugs and coolant temp sensor as well as the starter. No fix.
Why is my lawn mower engine not starting?
The engine won’t restart until the engine cools. The plastic housing can also collect dirt that will eventually lead to the engine shut off. So, solve the problem you have to clean the fins and plastic covers once it is cool. Some mower engines simply won’t start if the oil level is either low or high.
Why does my Ford truck not start when its hot?
I have an 89 f 250 mine wont restart when hot. I can move the distributer and it will start again. So weird. When its hot it sounds like the battery is dead and wont turn over till I retard the timing. 83 people found this helpful.
Why does my Harley Davidson hard start when hot?
Hard starting when HOT, but the engine spins up fine, means either lack of fuel or weak, no spark. If your Dyna is EFI, your fuel pump is losing prime/pressure due to fuel line leak…look here: http://www.hdtimeline.com/diagnosti…lated/979-engine_dies_and_runs_in_spurts.html
Why does my GMC Sierra suddenly stop running?
Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?
What causes a car to not start with no gas?
Problem may be at wiring connector on top of fuel tank (hard to reach!). No gas in fuel tank (Check the fuel gauge, and keep in mind the gauge may not be reading accurately). Bad gas (Contaminated with water or too much alcohol or diesel fuel). If you just filled up with gas and now your car won’t start, suspect bad gas.
What should I do if my fuel pump is not working?
Fuel pump breakers usually have a button on top that pops up when it trips. Simply push this button back in until it clicks. Check the owner’s manual for the exact location. Fuel Pump Testing – If the fuse is good and the circuit breaker is not tripped; then the engine is not getting fuel pressure.
Why does my Car start hard when it’s cold?
Hard to start when cold can be the mixture is too lean. Could be lean when hot too, but the engine is more forgiving of a lean mixture when hot. If your shop has the capability to measure real time fuel trim, that’s probably what I’d do if I had that problem.
Why does my car not start in the Cold?
The second possible issue is condensation, which happens normally inside your gas tank as the outside temperature fluctuates — and the lower your fuel level, the worse it gets. Water is heavier than gasoline, so the water will migrate to the bottom of the tank and into the fuel lines.
Can a bad coolant temperature sensor keep the car running?
Your symptoms are a dead ringer for a bad engine coolant temperature sensor (ECT). The computer is calculating an air/fuel mixture that is too lean. That’s why pumping the gas pedal keeps your engine running. You can have a bad sensor even without a “check engine” light or trouble code.
What does it mean when your car won’t start unless you give it gas?
The Car Won’t Start Unless I Give it Gas: Diagnose the Issue! Nothing can be more annoying than a car not starting at the beginning of a day! However, if it does start on pumping the gas pedal, you may get a sigh of relief. But this doesn’t mean an end to the problem.
Why does my computer say cold start is too lean?
The computer in every fuel-injected car must know two things before it can figure out the correct cold-start air/fuel mixture: the engine coolant temperature and the outside air temperature. Your symptoms are a dead ringer for a bad engine coolant temperature sensor (ECT). The computer is calculating an air/fuel mixture that is too lean.