Q: i have a 96 olds aurora and the car only have 59000 miles. When i start the car whe its cold the rpm jumpsup and down and stalls

asked by on November 27, 2017

when I start the car in the morning or when cold the car would idle high and struggle to keep the idle up. After a min or two it would stall out and restart fine. once it warm up the car's rpms would jump up and down between 500 and 1000 rpm it would never stop. lately the car would drive about ten min and then hesitate really bad and stall but will start right back in and drive fine. I have changed the mass airflow sensor, throttle sensor, and cleaned throttle body and changed spark plugs. I only had the car for a month and can't drive it more than a week. The previous owner that had the car and never drove it, only twice in the last year. NEED HELP.

My car has 59000 miles.
My car has an automatic transmission.

Idle Control Valve Replacement $162.54 - $1028.01 Get a Quote

It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate. The idle air control valve is a small valve on the engine’s intake system that reads the air intake as it comes into the motor. This is controlled by the car’s ECM which uses this information to make adjustments to the air/fuel ratio depending on various inputs such as outside air temperature, intake air temperature, load and various other things. As you accelerate, your car’s engine is receiving a much higher dose of fuel than when at idle and conversely, when you let off the gas pedal, there is a sudden change in this fuel supply as a result of your foot letting off the pedal. When this happens, the job of the idle air control valve is to bring this deceleration down to a slow and smooth idle rather than suddenly cutting off the fuel supply causing the motor to die. When the idle air control valve is not working properly, this cause a disruption in this process resulting in the engine not being able to idle properly. I would recommend having a professional come to your location to diagnose and inspect your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Air conditioning is pretty much useless
The A/C indicator light blinking is an indication that the system is low on refrigerant or a defective pressure sensor or wiring issue. The way you described your problem is that it is an intermittent one. The fact that your...
Reason for car continually stalling can't be found by dealerships
Hi. We will be happy to help you. I believe that you have a brake hardware component coming out of place at times and scraping against a moving surface. This is a common occurrence. Another common occurrence that could cause...
Engine problems.
Hello. From what you describe it would appear likely that the backfiring and performance issues are a result of the fuel problem. A rich fuel mixture can be caused by a wide variety of issues. A few things I would...
I can't drive at high speeds without the car shaking
Hi there. Your vehicle shaking over 60 km could be caused by several things. The possibilities include: tire separation and/or balance issues, bad shocks (https://www.yourmechanic.com/services/air-shocks-replacement), bad springs (https://www.yourmechanic.com/services/air-springs-replacement), and possible driveline issues (u-joints, etc.). Securing the ramp/tailgate may be in...
My vehicle stumbles and hesitates, and the RPM go crazy
This may be a sign of a dirty or failing mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement). The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being...
Car won't start - 2007 Pontiac G6
Hi there. You could have a bad battery (https://www.yourmechanic.com/services/battery-replacement), starter (https://www.yourmechanic.com/services/starter-replacement), or electrical problem. Perform a battery test (https://www.yourmechanic.com/article/how-to-check-a-car-battery) with a digital battery tester that provides cold cranking amps and state of health. Check all fuses/relays (https://www.yourmechanic.com/article/how-to-check-fuses-by-rocco-lovetere) and replace as...
Bolt on bottom of transfer case. 2001 Dodge Ram 2500
Hello - I would consult a service manual on your transfer case problem (https://www.yourmechanic.com/question/why-would-a-transfer-case-jump-gears-by-kyler-m) if possible, but basic guidance would be: the "bullet" would go back in first, followed by the spring, followed by the '"bolt". Examine the "bullet" -...
Overheating car no leaks
The cooling system, including the radiator pressure cap, should be pressure tested to determine if there is a leak. Leaks can be outwardly visible (external) as well as hidden (internal) in a circumstance for example where the cylinder head gasket(s)...
Air bags deployed - is it possible to repair, at what cost? 1999 Chevrolet Malibu
Hi there - yes, it is possible to get replacement air bags, and other damaged supplemental restraint system components for a 17-year old car. This is, however, very sensitive work, and should only be done by a qualified auto body...

Related articles

A Buyer’s Guide to the 2012 Jaguar XF
The The Jaguar name alone represents luxury, performance and prestige in the world of high-end vehicles. The XF was completely retooled in 2009, a sign of the premium carmaker’s efforts to draw in younger consumers and attract a whole new...
Oldsmobile Certified Pre-Owned (CPO) Car Program
If If you are in the market for a used Oldsmobile vehicle, it may be that you have considered a Certified Pre-Owned, or CPO, vehicle. CPO programs allow owners of used cars to drive with confidence, knowing that their vehicle...
Understanding the Oldsmobile Oil Life System and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Oldsmobile Oil Life System indicates when and what service your car needs.