Skip the auto shop - Our mechanics make house calls

Q: My vehicle does not want to stay on, I disconnected the TPS and it stays on but the rpm jumps up and down. I've recently replaced

asked by on

Like I mentioned before the vehicle stalls out almost immediately after the car starts. I disconnected the TPS and it stayed on, is there anything that I can do to fix this, it's been an on going problem for months now

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

If the RPM’s struggle to remain stable, this suggests you may have a vacuum leak or a fuel supply problem. I would recommend plugging the throttle position sensor back in in order to properly trace the problem. The car may run ok at idle without it, but it will not run well (or at all) when the RPM’s are elevated for an extended period of time. The idle air control valve is a unit that monitors air intake as it is mixed with fuel prior to being injected into the motor. When this is not working properly, the car will struggle to run or idle as you describe. I would recommend having an expert from YourMechanic come to your home to diagnose the stalling problem so that this can be corrected appropriately.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. My vehicle does not want to stay on, I disconnected the TPS and it stays on but the rpm jumps up and down. I've recently replaced

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: It starts, but takes a couple tries. Then if I stomp the gas pedal too hard on take off it will shut off.

With your elevated mileage, there are several suspect components: a dirty idle air control valve or throttle body will have poor "transition" behavior, loose hoses or other intake system leaks can cause hesitation and poor low-speed running. Low fuel pressure,...

Q: I have the obi II light on and the Service tire light, what do I need to do, I am out of town, and don't know who to take it to 2010 Chevrolet HHR

Hello - most any auto parts store will plug in an OBD II code reader for free on a "time-available" basis to get problem codes. Any codes they extract will be in a "Pxxxx" format. These problem codes will help...

Q: What does "Service Stabili Trak mean?"

The fault(s) that have caused the check engine light to illuminate should be investigated and resolved first because occasionally resolving those also removes the cause for the Stabilitrak warning light light. The recommended service is a check engine light diagnostic....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...