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I have a 2001 Pontiac Sunfire GT. It will start, idle 5

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I have a 2001 Pontiac...
I have a 2001 Pontiac Sunfire GT. It will start, idle for about 5 seconds then sputters and dies.
In the last month I've had the ignition coils and car worked great. Now im having issues again. I cleaned and replaced the idle air control valve and same problem. I then replaced the idle air control valve with a new one and still won't stay running. No codes are are showing up.
Submitted: 2 years ago.Category: Pontiac
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Answered in 1 minute by:
12/6/2015
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago
Gary
Gary, Pontiac Technician
Category: Pontiac
Satisfied Customers: 17,486
Experience: 15 years GM master tech/15 years ASE master
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can you keep it running working the gas pedal ?

if not can you keep it running spraying carb cleaner or starting fluid into the throttle body butter fly ?

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Customer reply replied 2 years ago
As soon as I touch the gas pedal the engine dies.
Haven't tried starting flud.
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

usually these issues are low fuel pressure issues

see if you can keep it running on starting fluid to keep it from dying if you can then either the fuel filter is plugged or the fuel pumps are usually bad causing this issue

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Customer reply replied 2 years ago
Fuel pump and filter were both replaced 3 months ago (7k miles ago)
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

ok then lets see if adding fuel will keep it running

and at least narrow this down to a fuel issue or not

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Customer reply replied 2 years ago
Sprayed starting fluid in the intake and still won't run.
I'm thinking MAP sensor possibly?
Pontiac Mechanic: Gary, Pontiac Technician replied 2 years ago

it could be but usually adding fuel would compensate enough for a bad MAP reading

lets see if any other experts have any ideas

hang on another expert will reply back to you

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Pontiac Mechanic: Pete, Pontiac Technician replied 2 years ago
Pete
Pete, Pontiac Technician
Category: Pontiac
Satisfied Customers: 30,426
Experience: 17 Years Pontiac Technician and training.
Verified

Hi my name is ***** ***** I will be happy to assist with this here.If at any time you feel I cannot help let me know.

Is or has the check engine light come on with this issue at all here or have you had the fault codes checked at all?

Let me know so we can continue,thanks Pete.

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Customer reply replied 2 years ago
Only code that pops up is P440
Pontiac Mechanic: Pete, Pontiac Technician replied 2 years ago

O.k.,if this model uses the mass air flow sensor (I believe it does but my info shows two options) with the key off unplug the mass air flow sensor connector and then turn on the key and see if it starts then and let me know.

Thanks Pete

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Customer reply replied 2 years ago
I'll do that when I get home from work.
Thank you. I'll let you know.
Pontiac Mechanic: Pete, Pontiac Technician replied 2 years ago

O.k.,let me know if this does anything.

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Customer reply replied 2 years ago
OK so I don't see an MAF, only an MAP and air temp sensor. So I unplugged the air temp and same thing, runs a few seconds and dies. Starting fluid keeps it running a few seconds longer.
Pontiac Mechanic: Pete, Pontiac Technician replied 2 years ago

Can you test one one or more cylinders to see if spark is cutting out when this issue occurs or right before the engine stalls out and let me know?

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Pete
Pete
Pete, Pontiac Technician
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Satisfied Customers: 30,426
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