I travelled for two months while the was parked, on return started the car and allowed to run idle but later went off,also i tried to the car but wouldn't start.but it cranks but will not start.what do i do now
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Re: engine not starting
Try some dry gas in the fuel tank,it absorbs any moisture that might have accumulated.After that,check and see if you have spark at the plugs,and fuel at the engine.Sometimes components that are marginal will work great as long as they're being used everyday,then they sit for awhile,and start to malfunction,could be fuel pump,an ignition component,that's why im saying to check for spark,and check for fuel supply.Good luck.
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Try removing the idle speed motor on side of throttle body, and spray it clean, as well as the port it came out of, with throttle body spray cleaner. Don't pull and extend shaft of idle motor, just leave it in position it's in, and make sure you don't lose small "O" ring on idle motor. Re-install and try it. If it cures it for a while, then starts to do it again, replace the idle speed motor.
It sounds like there is a problem with the Idle Air Control (IAC) valve. Its job is to open and let air into the manifold when the throttle is closed at idle. If it does not open, the engine dies at idle. The IAC is mounted on the throttle body. Possibly the valve is clogged or stuck, in which case it could be ok again if it is removed and cleaned. Or it is broken, and needs to be replaced. Or, there is a problem with its electrical connection, that needs to be traced. Good luck, let me know if you have any questions.
You have 2 Problems, First problem batteries dying you have to make sure connections secure and alternator is charging your batteries (go to an Autozone or Discount advanced they will tell you). The Sputtering is either a bad SPARK PLUG or a damaged Cable going to the spark plug..Change them every 2 years.
you only set base timing to 15 degrees BTDC (before top dead center).
CAUTION: Parking brake control should be applied. Depress the parking brake pedal, and warm the engine to the normal operating temperature.
Turn off all electrical loads.
Rev the engine to 2000-3000 rpm two or three times and allow the engine to return to the idle.
Turn off the engine and disconnect the throttle position sensor electrical connector. (not really necessary)
Start the engine and rev it to 2000-3000 rpm two or three times and allow the engine to return to the idle.
Check the idle speed. The idle speed should be between 700-800 rpm in PARK (P) or NEUTRAL (N) position.
NOTE: Make sure that the timing pointer is pointing to the 15° Before Top Dead Center (BTDC) mark on the crankshaft pulley. Each notch on the crankshaft pulley represents 5 degrees. Check the ignition timing with a timing light.
If it's not sticking throttle linkage, and i assume it isn't because you have an engine light on, it's probably a faulty idle control sensor. You can get one at any parts store, and they aren't hard to remove and replace. The parts guy can show you exactly where it is on his screen.