On first start of the day engine shuts off when clutch pedal is pressed

SHAAN MUGHAL

MEMBER
2009 HONDA CITY
4 CYL
MANUAL
12 MILES

Car listed above has an ivtech engine. Whenever I start my car first time in the morning after the car not being used for more than 10 to 12 hours, the engine shuts off whenever I press clutch initially for the first 2 to 3 KM’s. Once I drive more than 2 KM’s the car functions well and the engine also does not shut off then. This happens only for the first 2 to 3 KM’s when I start the car after a long interval.
Mechanic checked the car and changed the air filter, ignition coils, all spark plugs, also got the fuel injectors serviced and tested.
Got the car checked on ODB device which showed errors; manifold absolute pressure (MAP) sensor circuit high voltage (p0108) temporary. But this error went away after getting all the above things done, the car runs well but at the start as mentioned it shuts off for initial km’s.
I need some expert comments.

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,772 POSTS

Hi,

When the vehicle is first started, temperature plays a role on air fuel mixture. If it correct mixture isn't controlled, it will cause drivability issues. The engine temperature sensor sends a temp signal to the computer and then at this point, the computer determines the correct mixture.

One of the first things I would check is that sensors reading when cold. If it is a good bit different than the ambient temperature, it can cause this and not set a code because the computer doesn't realize the reading is wrong. If you can access a live data scanner, simply go to live data and see what temp it being indicated.

Take a look through these links:

https://www.2carpros.com/articles/how-a-coolant-temperature-sensor-works

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

Now, there are other things that can cause this. Another common issue is an engine vacuum leak. If there is a leak, for example, on the intake manifold, when the engine warms up, the metal will expand and could stop the leak.

Now, here is a link that explains how to check for a leak, but this will need done during the time the engine is cold and the problem would happen.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know if any of this helps. Also, this problem can be several other things, but without a code, we need to start checking different things. The problem could be low fuel pressure resulting from a partially plugged fuel filter. However, since the codes are now gone, the only thing we can do is start checking.

Let me know what you find or if you have other questions.

Joe