Q: Car doesn't hold idle, I tried changing the PCV valve, what else could be wrong?

asked by on

After driving fine came home park the car next morning car would not hold idle as if there was no gas. strater ans battery fine.

After disconnecting the IDLE AIR AND THROTTLE POSITION SENSOR I was able to start the car but the car would lazily drive around and I would not be able to accelerate.

I changed my IDLE AIR same symptoms. I changed my THROTTLE POSITION SENSOR same symptoms.

I changes PCV valve (after I found out I might have been driving around without a PCV valve hose for sometime but I'm assuming hose was there when I was able to drive normally.)

So I changed the PCV valve and got a hose for it, plugged the IAC and TPS back in, car was driving amazingly accelerating fast very responsive. parked car for 1 hr. it would not start back to square one.

Has my PCV original Mopar gone bad after a drive? I doubt it.

I am now only able to drive lazily in neutral around 20 miles an hour down with my PCV hose disconnected and throttle position sensor disconnected.

any ideas?

My car has 210000 miles.
My car has an automatic transmission.

Need advice from certified mechanic? Get help now!

Over 1,000 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. Car doesn't hold idle, I tried changing the PCV valve, what else could be wrong?

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: After changing leaky valve cover gaskets and oil, I'm getting a rattle under cover and oil light and buzzer is now on 2000 Chrysler Town and Country

Hello. If you are getting this light and noise then you have low oil pressure. I would drain the oil and change the filter as it is possible that you got a bad oil filter. If the problem persists then...

Q: The sleeve that goes on the harmonic balancer that the belt goes on popped off and the belt slipped can the sleeve be reused?

The short answer is no. The harmonic balancer is manufactured in three pieces: The hub, a rubber sleeve, and the outer sleeve. They are held together with adhesive and the reason your's fell apart is because the rubber has gotten...

Q: Brakes don't work very well when it's cold

You have two different issues here. The slow crank may be that the battery is getting weak. It may need to be replaced or the terminals cleaned. The other issue of the high idle and braking issue is probably due...

Related articles

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...
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...