Skip the auto shop - Our mechanics make house calls

Q: Why when i go to crank up my car i have to press the gas

asked by on

hi i have 2005 chevy malibu and the reader for the gas amount doesn't show the accurate amount which i was told was the floater but also when i start it i have to press on the gas for it to start up completely other than that its runs good no engine light on so what could it be?
My car has an automatic transmission.

A: If you have to hold the gas open to start t...

If you have to hold the gas open to start then you may have a throttle body and idle air control valve that has carbon deposits that need to be cleaned. The intake valves may also have carbon build up and combustion chambers need to be cleaned using GM approved cleaners. An inaccurate fuel sender may be faulty which will need to be replaced as well. If you'd like some assistance with this, have a certified technician, like one from YourMechanic, diagnose your starting issue for an accurate repair. Best of luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Truck cranks, fuel pump turns on but wont stay on for more than a couple seconds. Poured starter fluid in carburetor and it turns on for a few

Hey there. This may be some kind of fuel supply issue. When you turn the key on, the fuel pump should come on for a brief second pressurizing the system. When you turn the key, it should then maintain this...

Q: What causes an ignition relay to go bad?

Hi, thanks for your question. If the relay is not making a good contact inside the relay socket, I suggest inspecting the old relays that came out and see if one or more of the pins look like they got...

Q: Ignition not switching off and draining the battery.

Normally when this happens the problem is in the ignition lock cylinder itself and it must be replaced, its a common problem on these vehicles.

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.