Hard start up in the morning

2009 GMC TERRAIN
70,000 MILES • 2.4L • 4 CYL • AWD • AUTOMATIC
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MOHAMAD KIBRIT
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Hello
In the morning it does not start up from first try and the next problem is the idle is too low and when I put it in drive the rpm's are jumping, but not always. I change the plugs and the coil cable and the distribution and still the same. I opened the throttle I could see oil inside, I cleaned it and after two days the the problem returned. I took it to the garage to have it scanned to see the misfire in all cylinders .
Any ideas?
Thank you
Apr 10, 2016 at 3:05 PM
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CAR-MAN145
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I would check the fuel pump make sure the fuel pressure is not leaking down over night.
Apr 11, 2016 at 11:43 PM
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MOHAMAD KIBRIT
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No leaking at all????
Apr 15, 2016 at 3:16 AM
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CAR-MAN145
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Maybe the coolant temp sensor is not reading that its cold. sound like you may have a bad idle control or maybe a bad throttle body. Its hard to diag something like this without seeing or hearing it.
Apr 16, 2016 at 1:22 AM
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MOHAMAD KIBRIT
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Thank you
But how can i fined the coolant temp sensor to fined if it good or not
Thanks for your info
Apr 19, 2016 at 5:08 AM
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STRAILER
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Hey, MOHAMAD KIBRIT

Have you thought of the mass air flow sensor? If this sensor is dirty with contamination it will give a false reading the computer, follow the guide below to clean and get back to us.

https://www.2carpros.com/articles/mass-air-flow-service
Apr 19, 2016 at 11:54 AM
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MOHAMAD KIBRIT
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Hello ken
If the the mass air flow not working it will show an error in the computer test or the light chek engin go ON but we dont have any error reading in the computer ????
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Apr 19, 2016 at 1:45 PM
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STRAILER
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No error will be recorded because the reading is simply off but not enough to set an error code. Please try to clean it to see how it does, the mileage is perfect for this kind of repair although replacement is the best way to fix this kind of problem, that's why the dealership has an advantage they just pull on off the shelf and then put it back if it doesn't work. let me know what you find.
Apr 19, 2016 at 2:42 PM
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MOHAMAD KIBRIT
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Thank you ken for your precious information. I will try this in the weekend
Thanks again :-)
Apr 20, 2016 at 10:31 AM
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STRAILER
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Please let us know what you find :-)
Apr 21, 2016 at 7:59 AM
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MOHAMAD KIBRIT
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Ken hello my friend
I tried in the morning to turn on and off 4 times and i start the car it turn on from the first time i think the pump pressure has a problem can you please send me the manual of my car and how can i repair or replace this pump.

Thank you for your support
King regards:))))
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Apr 25, 2016 at 11:44 AM
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STRAILER
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hey,

To change the fuel pump you must drop the tank, its best if you have it low on gas or drain the gas,

here is a leak on how

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump


and a pic once you get the tank out

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Apr 25, 2016 at 3:33 PM
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MOHAMAD KIBRIT
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Hi Ken
Please i need the manual of the gmc terrain 2009 it will be easy for me to make the installation because its under the rear seat
Thank you
Apr 26, 2016 at 1:36 PM
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STRAILER
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This must be an out of the country car because we don't have this model in our Mitchell1 software. It will be very close tot he same because there is not much difference.
Apr 26, 2016 at 4:57 PM
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MOHAMAD KIBRIT
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Hello ken
Sorry but its same like GM captiva 2010 same motor and body if u have please send to me i don't wand to go to garage again
Thanks for your fast replay and support
Apr 27, 2016 at 5:39 AM
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STRAILER
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Is the what you need a pic of the tank or?
Apr 27, 2016 at 8:51 AM