Q: 01 Chevy Impala v6 3.8L (3800 Series 2). Upper Intake Manifold exploded

asked by on

I went to the gas station the other day for gas and left my car running while I went inside to pay for $10 in gas. When I went to go drive off I heard a loud bang then smoke came out from under the hood. My Upper Intake Manifold exploded and i'm trying to fine out if it could have caused any other damage to my engine or my Lower Intake Manifold or if I only need to get a new Upper Intake Manifold and gasket. My car has been running hot too, I know I have been loosing antifreeze which I do believe its coming from my water pump. When I got in it to drive off I looked at my temp gauge and it wasn't running hot. Not sure if that could of caused my Upper Intake Manifold to explode like it did or if it could have been another reason it exploded. I really appreciate any help given. My car has an automatic transmission.

Before this question could be answered you will need a mechanic like one from YourMechanic to do a complete assessment of the damages to see if the upper manifold is the only thing that got damaged and why it exploded. You may have a fuel vapor leak that built up when you got fuel from a leak in the fuel tank vapor recovery system like a leaking purge valve. The may have let excess fumes into the intake that upon opening the throttle flooded engine with straight fumes that exploded. Have the system tested along with getting the cooling system tested and repaired.

Was this answer helpful?

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. 01 Chevy Impala v6 3.8L (3800 Series 2). Upper Intake Manifold exploded

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: Q: Car starts then dies

Hi There, It sounds like you may have a problem with the fuel system maintaining consistent fuel pressure once the motor starts. This may be a sign of a faulty fuel pump or fuel pressure regulator. As you know, when...

Q: My spider gears in the rear end keep busting. Chunk isn't harmed. What is the problem?

Hello there, thanks for writing in. The spider gears are only used when you are turning left or right, unless you have two differently-sized tires on the same axle, in which then the spider gears will turn all the time....

Q: Q: Misfire

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...