Car sometimes wont start;sometimes cuts off while idling;sometimes cuts off while riding at normal speed.
Observations:when attempting to start for the first time of the day ive noticed that the fuel pump isnt coming on when key is turned to on position.
-when driving it seems like it has run out of gas but it does sputter or anything it just goes off as if someone has killed power to the fuel pump.
-it used to restart within 10 to 15 minutes, the last few times its taken over an hour and in that time i have, attempted at various intervals,to restart each time pausing at the on position to listen for the fuel pump but it is always absent.but,finally when i try to restart,and i pause to listen for the sound of the fuel pump i hear it.......thats when the car starts.from what ive read theres a solenoid valve that acts as a backup to the wastegate on the turbocharger, and under certain conditions it "if boost pressure exceeds a specified level,then the solenoid valve stops the fuel pump circuit and the fuel supply to the injectors"
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hi I assume this is a fuel injection vehicle and if so it sounds a lot like you have a throttle body problem or throttle sensor problem ,have you also checked that the fuel filter is not blocked,remove the fuel filter and blow thru it in the direction of flow and if your cheeks blow up while blowing thru the filter it is blocked or restricted -replace.
hope that helps .
I don't have an answer for you, but I do have a similar or maybe even the same issue with mine. It usually starts up fine, and idles and runs fine when first started, however a few blocks or a few miles down the road it starts to cut out on me, sometimes dying completely... throwing it into neutral and pumping the gas usually will keep it running. This has gone on for a couple of months. When it does die, It normally will restart after sitting for a few minutes. Then a couple of weeks ago it died on me (normally this happens when slowing down and coming to a stop,) and would not restart even after a 1/2 hr, I had to have it towed. I periodically attempted to start it for over a week, it would turn over, but nothing more...then someone suggested that I disconnect the auto start box...It started right up. However, it still continues to cut out when slowing or stopping unless thrown into neutral and pumping the gas. It seems to run better on the open highway, than it does in town with all the slower speed and stop n go. I bought this car used about 6 mos. ago, and considering it's age and the 135K miles on it, I don't want to put any more money into it. I just read there is a recall on this vehicle for the fuel pump and additionally the fuel assembly, I'm not sure if this would be the answer to the whole problem or not.
You could have a number of problems. First do a complete tune up, proper timing, new plugs etc.
Turn the key and do not give it gas. If it starts slowly give it gas and let me know what it does. I suspect it will cut out. In that case, you might have bad injectors. Let me know if I can be of further help
if when running it runs well apart from idle problem i would suggest you have the throttle body and idle speed control valve cleaned out and add a fuel system cleaner to fuel tank also check wireing to idle speed control valve
The high idle speed at start up is normal. As the engine temperature increases, the engine idle should kick down automatically. Insofar as the emissions results, if there were a problem, the check engine light should be on. If it is, take the car to an autoparts store and have the fault codes read. Most parts stores will perform the scan for free. If the check engine light is not on, and the idle question was all you were worried about, you are good to go! Hope this helped and best wishes.