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Re: Periodic stalling after running for awhile . when...
The fuel pump only turns on for 2sec when key is turned on for a fuel pump prime. The fuel pump will turn back on during engine cranking. The most likely cause of stalling on this particular vehicle is a weak/bad crank sensor.
Testimonial: "had a mechanic tell us it is not a crankshaft position sensor problem, but something electrical because the fuel pump does not run when the key is turned on until it sets for several minutes."
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turn key and listen to fuel pump if will hum meaning its pressuring the line --if sounds erratic possible going bad may need replacement --check fuel pressure valve by fire wall if weak or sputter either fuel filter or pump---also need to check egr valve if it carboned up or has failed may need cleaning or replacement
Seems like the fuel line looses its fuel or something. ????? That would cause a no start or hard start problem . Your best bet , have it diagnosed by a repair shop . That is unless you want 20 different answers on here . Are you willing to replace parts your vehicle doesn't need . Testing is the only way find the problem , not guessing , that's all you'll get on here . Hooking up a professional type scan tool an checking sensor data parameters to see what is a miss . Doing fuel pressure testing ,hooking up a pressure gauge .
My 2001 Honda Odyssey would completely lose power, foot on the gas pedal and nothing there. There were no warning lights prior to the losing power. After letting the car set for a few minutes it would start and run okay. This happened intermittently over a couple of weeks until finally it didn't want to start at all. When turning the key the car sounded like it wanted to start but wouldn't. After a quick trip to the closest Honda dealership and asking a few questions we were told that it sounded like the main relay needed to be replaced. They showed us where it was located on the Honda, we bought a new one and we easily installed it ourselves. The old relay did have a slight burned smell. My Honda is working fine now and it has been over a week with no problems. I hope this helps someone else.
when it stalls, can you hear the fuel pump running when you turn the key back on? If you can, then the pump is good and the wiring is OK. If not, check the pump relay in the power distribution center. Did either of the mechanics that advised you actually do any testing? Did you do any testing? Have you tested the crankshaft position sensor? It can give identical symptoms. To do proper testing you will need a chiltons manual (better than haynes especially for electronics) and a digital multi-meter. Check the cps both when engine is working and when it has stalled. (cam sensor can do that as well as ignition coil but cps is most common.)
Your vehicle does have a computer BUT: Before blaming the computer or anything else for that matter, have a code test done (most larger parts stores do that free), Get yourself a chilton or haynes manual and do some sensor tests, and then do the appropriate repairs. Two items often can cause the problem you have. Your fuel pump can begin to overheat and bind ...after a few minutes of sitting it will cool down and work again. If you can't hear the pump running when you turn the key on after it stalls, I'd check that. Next, the crankshaft position sensor will also often react to heat and internally short, when cool it too can begin to work again. Test that cold and again after it stalls. Readings should be the same. If not, replace it. Sometimes it will register a fault in the computer, sometimes not. Fuel; pump will not show a code. Your fuel filter can also cause a similar problem so if pump works and cps checks good, replace the filter...or, if it has not been replaced in a long time, do it regardless to eliminate that variable. No good shop will replace parts without testing them you should not either. Doing that will cost more than a shop repair and often will not solve anything! Good luck
it is very possible and i can tell you a way to help you see if that is the issue. after your car has sit a while (as long as it usually takes before it acts up) jump in the vehicle and turn the key to the postion just before the vehicle begins to turn over when all the dash lights come on. when the key is put in this position the fuel pump runs for a few seconds and then stops until vehicle is cranked, allow the pump to run for 5 seconds then turn the key back off. then return the key to the "run" postion i mentioned before and wait a few seconds then try to start it. if it fires right up you have allowed the vehicle to build fuel pressure before you started it, indicating you have a fuel pressure issue and you are most likely looking at a weak fuel pump.
The car needs checked for codes the ingtion is more likly than fuel on this car Does it start right back up or do you have to wait awhile for it to start? The crank senser and the ingtion module and the coil are the causes and if it stalls adding fuel to the air intake should start it right back up. if its fuel or filter related how long does it run if less than a minute the filter is possible but if it has to run for awhile then the filter and the new fuel pump aren't whats wrong. if it starts right back up every time, wiggle the key switch as it tries to stall and if you can chatch it the switch can be bad and it happens alot.