Q: My car sputter and dies, after replacing intake gaskets.

asked by on

On my mustang it worked fine. But I had a engine light on for intake manifold gaskets. Anyways I bought new gaskets and it came with fuel injector o-rings. I properly cleaned the intakes off good enough to eat off of it. I hooked everything back where I got it after replacing gaskets. But when I was done I went to start it and it now sputter and dies. Right as I start it. If I rev it up it'll stay on until I release. I don't know why it would by a aci or maf because the car worked perfectly before I took it apart. I even took it apart again to make sure it was clean and all connected right. Now I just wanna go crazy.

My car has 189000 miles.
My car has an automatic transmission.

It sounds like the idle air control valve or the mass air flow sensor may not be properly reading the air intake volume, resulting in the stalling as you describe. This may also suggest there may be a bit of a vacuum leak remaining resulting in the incorrect readings. You may need to perform an idle relearn process to allow the IAC valve to adjust. Try doing the following: 1. Remove battery power for one (1) minute. Restore battery power and place air conditioning controls (if equipped) in the "off" position. 2. Firmly apply the parking brake and block the drive wheels. Start the engine, shift the transmission to drive for automatics and neutral for manuals. 3. Allow the engine to run until the engine cooling fan has cycled once, or a maximum of 10 minutes. 4. Turn the ignition key to the "off" position for at least 5 seconds. 5. Repeat Step 2. 6. Allow the engine to run for at least five (5) minutes. If you need further help with this, please reach out to us here at YourMechanic as we are always here to help.

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. My car sputter and dies, after replacing intake gaskets.

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: Çv boot torn

Hi There, Unfortunately, there is no way to tell exactly how far your car will make it with a torn CV joint boot. Depending on how long this has been torn and how much damage has already occurred, this may...

Q: how to fix the cvt transmission

The parts required will depend on exactly what has failed and that, of course, is determined through both a diagnosis and an inspection upon disassembly if it turns out that the transmission has to be rebuilt. Your car has enough...

Q: Location of bank 2 sensor 1 on a 2014 Ford Mustang 3.7L V6

Hi There, This oxygen sensor is located on the passenger side of the vehicle in front of the catalytic converter. If you need additional help replacing this, please reach out to us here at YourMechanic as we are always here...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...