Q: Did intake gasket. Car now bogs and stalls when started. Maf and misfire codes

asked by on

So I got the car from the previous owner after he did the lower intake and appropriate gaskets. Car ran fine prior to changing the gaskets, now when you try to start it it bogs out and dies. Throwing a MAF low frequency code as well as a non specific misfire code. Vac lines have been checked, they are good. When I unplug the MAF sensor and fire the car it hesitates for a moment then jumps to 3k rpm. I'm rather stumped.

My car has 175000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. Simply pulling the mass airflow sensor is not a good enough test. You will want to test it with a multimeter to get an accurate reading on how it is working. The symptoms you are having are consistent with a vacuum leak. The leak may be coming from the gasket itself, as they are incredibly easy to over or under-torque when reassembling. If you did not clean the engine’s surface well enough before installing the gasket, it can also cause problems. Properly check the mass airflow sensor to rule it out, and then proceed to do a smoke test or similar vacuum leak test. For more help, contact our service department to schedule an appointment.

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. Did intake gasket. Car now bogs and stalls when started. Maf and misfire codes

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: When installing a new water pump and thermostat on my 1989 Pontiac grand Prix should I use gasket sealer or silicone grease

In your application, the new thermostat comes with a new rubber seal which is the entire gasketing solution for the thermostat housing. Nothing should be added as that may interfere with the seal. The water pump uses a paper/fiber gasket....

Q: Damaged radiator causing overheating

It is fairly normal for a blown head gasket to happen when there is a leak in the system. In addition to the repairs the mechanic has suggested, I would also recommend repairing the radiator support to address the original...

Q: Can I provide my own starter

Yes, you are welcome to buy your own parts and book a certified mechanic from YourMechanic to install those parts or perform associated repairs. When reviewing your quote online, open the “price breakdown” tab, and click on “parts options.” From...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...