Q: At idle, my car uncontrolably surges rpm up to 2500rpms.

asked by on

At idle, my car uncontrollably surges rpm up to 2500rpms. I can smell unburnt fuel. I check for vacuum leaks, Could not find any. I first cleaned out the Air Idle Control Senor, No luck,,, second I replaced it with one off a donor car from a salvage yard. I replaced some vac hoses, and the PCV valve. I replaced the valve cover gaskets (oil leaks), check and re-gaped the spark plugs. Disconnected the battery to reset the CPU... I checked the distributor. I cleaned some senor connections with electrical cleaner. I replaced the CPU about 1 1/2 yrs ago for a donor car from a salvage yard.

I am at a lost at figuring this out... unfortunately I do not have the money to have a "diagnostic" done on it. 1993 Honda Civic DX 5speed Manuel 1.5L

What else can I try.... I state (TX) inspection is due in two weeks.. I need to have this problem fix by that time.

Kate chillwill2230@hotmail.com

My car has 293400 miles.
My car has a manual transmission.

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. At idle, my car uncontrolably surges rpm up to 2500rpms.

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: Hi my belts squeels randomly when I turn my car on. Today for the first time while I was driving it started to squeel, what could

Noise of that type is often due to a failed or failing bearing in one of the pulleys or accessories (e.g., alternator, water pump, A/C compressor) that is driven by the serpentine belt, the belt is not properly tensioned, or...

Q: Brakes noise 2013 Honda Civic

You need to have the brakes checked before you drive the vehicle anywhere. It sounds like you have a leaking brake caliper on the right side and lost fluid. It would be best to have an expert scope this out...

Q: I have a honda accord ex 1999 4cyl..when i put the key in ignition to start my car.it wont start.power comes on but wont start.

Hi there. Usually this is an indication of an ignition relay or starter relay problem. Assuming the battery is fully charged (which appears to be the case since lights come on), it's probably one of the relays that is damaged....

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.
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.