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.

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car hard starts, rough idles , fan on all the time and stalls when accelerating.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Battery replaced and ABS light on

The vehicle needs to be inspected and diagnosed for intermittent connection issues at all the computer modules and the connections in between them. Have a mechanic check each pin and socket for any corrosion and pin fitment to make sure...

Q: Q: Engine bogs down

Hello there. Many common faults will cause your 1970 Chevrolet 350 engine to bog down. The most common faults are engine running to rich, improperly adjusted throttle linkage, fuel pressure to high, or a vacuum leak. A qualified technician, such...

Q: After driving awhile, when idling, RPM drops below 500 & car stalls. Happens rarely but RPM fluctuates, and drops suddenly.

If you are having a stalling problem then you may have a computer code stored in memory. I suggest having the computer scanned to see if there is any codes stored and diagnose them as needed. The intake hose and...

Related articles

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...