Skip the auto shop - Our mechanics make house calls

Q: Car will crank and run but won't idle and dies if you put it in gear

asked by on

I've replaced the plugs which were fouled... this got it to crank up and run but not well and not beyond the 3sec or so that it primed the fuel... I added octane booster and then it began to respond to the pedal... so I drained the tank and put 93 octane fuel and it now runs and responds to the gas pedal well and I can rev it as much as I like. However it still won't idle and dies when I put it in gear... I've currently pulled the fuel rail and soaking it, and changing the injectors and pressure regulator out... beyond this what should I try if this doesn't work?

My car has 140000 miles.
My car has an automatic transmission.

A: From what you've described it sounds li...

From what you've described it sounds like you are on the right path for replacing the correct parts to make it run better. I would also add the fuel filter to the list of parts you are going to change. Have the fuel pressure tested to see if the fuel pump is pumping the proper fuel pressure.

If you're unable to fix the issue, feel free to contact a certified mechanic who can diagnose your starting issue and make the necessary repairs to your vehicle.

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: The driver's seat will not move forward and backward. When I move it forward it makes a sound and then stops.

There is a small motor and worm gear inside the seat that moves to allow the adjustment of the angle of the back of the seat. The motor may have a malfunction or there may be an obstruction on the...

Q: AC stops blowing cold air

I have seen this before. It is not a very common issue but it does happen. Behind your dashboard there is a radiator like part that circulates refrigerant into your vehicle. The air blows through this radiator like part called...

Q: Poor idle, shuts off sometimes.

Anytime you have a performance or idle problem, a good place to start is to check for air leaks. The engine must have carefully monitored amounts of air to run correctly and any air that gets in without being measured...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.