Q: Ford Ranger idle roughly

asked by on

I have a 1990 Ford Ranger that idle roughly on starting up it takes 30 minutes to an hour who finally sitting and the engine goes in and out as if it wants to cut off I don't know if it's my IAC but i need help finding the problem
My car has an automatic transmission.

These engines were known to get a carbon build up on the intake valves and the excessive carbon buildup will soak up any fuel the injectors spray when it is first started until it gets warmed up. The buildup can cause low power, misfiring, rough idles, and hard starting. The carbon should be cleaned using an intake cleaner sucked into the intake and then cleaning the throttle body and IAC valve. You may even need to remove and clean the EGR valve if the engine has one. Some do and some don’t. If after cleaning the EGR you are still having problems, you may need to have the injectors cleaned out also. If you need assistance with any of this, a technician from YourMechanic can come to your home or office to inspect your rough idle and perform any needed services.

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. Ford Ranger idle roughly

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: 2004 Ford Ranger cranking, but not starting

A crank, but no start condition can be caused by many things. Depending on how strong or weak the vehicle is cranking, the no-start condition can be caused by a low battery, a problem with the fuel system, or even...

Q: Rough idle on car

Hello. The most common cause of a rough idle on this engine is a vacuum leak. Most of the time this is caused by a loose or broken vacuum hose. With the engine running you can listen for any hissing...

Q: My Jaguar XJ8 is running extremely rough

Being that your car is running better with the MAF disconnected, I say replace your MAF. Most cars would shut off without the MAF connected. If you need a technician to scope out the problem in person, a certified professional...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.