Q: RPMs jumps at idle, & sometimes stalls when gas applied after a stop at alight or sign and won't restart for a minute or so

asked by on

At stops idle sometimes jumps to1600/1700 apply gas to continue thru it stalls and won't re-start for a minute or so.diagnostic shows no problems w/ dist.,ecm,or pump. have changed filter. dirty tank? heat & cold don't seem to be an issue.

My car has 200000 miles.
My car has an automatic transmission.

Hello. A stalling issue like this may take some time to figure out. If you suspect your fuel tank is dirty, you may want to drop it and inspect it. However, these symptoms are more likely to be related to the throttle or air intake systems. If the throttle position sensor has failed, the computer will not know how to regulated other engine functions. The throttle body and linkage could also be damaged or contaminated. You will want to check the airflow sensors with a multimeter and make sure they are testing within specifications. A vacuum leak can also cause these issues and should be taken into consideration. When diagnosing an issue like this on an older vehicle, it tends to be a process of elimination. Start with the simplest tests and work your way down the list of possibilities from there.

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. RPMs jumps at idle, & sometimes stalls when gas applied after a stop at alight or sign and won't restart for a minute or so

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: 2012 toyota corolla green circle with an arrow half way on in the car not on dashboard

The light on your dash that looks like a green circle with an arrow at about the 10 O'clock position is the cruise control turned on light. Check to see if your cruise control is turned on.

Q: Turns over but won't start, or starts for a few minutes and then dies. It dies while driving also.

Hi there. From the description you have provided, your vehicle's engine dying could be so many things causing the problem. Assuming the Check Engine Light is not coming on. It could be the fuel pump. A fuel pressure test could,...

Q: My car idles low and shakes inside.

Hi there. From the description you have provided this is most likely an idle control issue. Assuming, the Check Engine Light is not on, leads me to believe the ECM (engine control module) is not recognizing the fault. The throttle...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.