Skip the auto shop - Our mechanics make house calls

Q: Car hard starts, rough idles , fan on all the time and stalls when accelerating.

asked by on

Car overheated and had the head gasket replaced. Car would not start after because coolant sensor was not jacked in. Jacked it in and car started but now the fan is on all the time, it hard starts , rough idles and stalls when accelerating. Did a compression test on all 4 cylinders got 130-150 and also checked for spark which was good as well. The car is a p11 primera with a sr18 engine
My car has an automatic transmission.

A: The symptoms you are experiencing can be ...

Hello.

The symptoms you are experiencing can be caused by many things. A few things I would look at are the fuel, ignition, and engine management systems.

If there is an issue with the components to any of these systems then they may cause performance problems. If there an issue with the fuel pump, ignition coil, or idle air control valve then the vehicle may experience all the symptoms you describe.

I would also take a close look at the temperature sensor, as in some vehicles it is responsible for powering on the fans, and can cause them to malfunction if it goes bad.

You're unable to pinpoint the issue yourself, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose your stalling issue and the other symptoms you've described firsthand.

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: it spitts and sputters when setting and does the same thing when shifting gears and drinks the gas

The engine needs the proper fuel and spark to operated correctly. You may want to see if you notice any lights illuminated on the dashboard. The possibilities of this condition are an engine misfire, which could be caused by a...

Q: The van stalls, jerks and hesitates

GM has a TSB out concerning clogged injectors that may cause all of the rough running/no start symptoms that you are experiencing. A professional fuel injector cleaning may help correct these various engine running issues. The procedure does require special...

Q: When I turn the key, the engine jumps and shakes the whole car but it won't start.

Hello there. You have several different issues going on with your 2003 Nissan Sentra. If the white smoke was seen immediately after the valve cover replacement, it is likely the oil burning off of the plugs. If the car is...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...