Skip the auto shop - Our mechanics make house calls

Q: Car starts but dies in 2 seconds.

asked by on

The car starts and dies within 2 seconds, Or sooner if the throttle is touched. If i unplug the maf it will idle but rough. It will also rev with maf unplugged but not very well. I checked all vacuum hoses. I checked the harness that goes to the icm/cam sensor/cps and fixed any questionable spots (also added protective tubing to avoid problems later on.) i disconnected the battery and reconnected it but that didn't help. I can hear the fuel pump and it sounds normal. 4-6 months ago i replaced the icm, put in iridium plugs, replaced crank sensor (what fun it was). Not sure what to do next.
Update- with the maf and all sensors plugged in it idled smoothly for like 7 seconds then died. i found a sweet spot in the throttle and it revved. Couldn't get it to repeat this. But i noticed something, When i run it with the maf unplugged it gets hot fast. (Not overheating) but running hotter than it normally does with the maf plugged in. car has 86000 miles.
automatic transmission.

A: It sounds like you have a bad Mass Air Flow...

It sounds like you have a bad Mass Air Flow (MAF) sensor if you can disconnect the MAF sensor, having it running, and can drive it. Especially in this case of having some drive symptoms but it acting better disconnected. This was a common problem in the early 1990's with these parts on many cars. Try replacing it and see if problem goes away.

If you need some help with this, consider YourMechanic, since you can't get the car running well. A certified professional will be able to come to you to diagnose your starting issue firsthand and replace your MAF sensor if necessary. Good luck.

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Buick not shifting.

It is highly likely that you have a TH200-4R transmission in your Regal. The vacuum line to the modulator and the adjustment of the throttle cable can be checked. These will have the ability to prevent upshifts and downshifts of...

Q: Garage gave me a huge list of things to be able to fix my car, but I want to know if it's all necessary to get it running.

Hi, thanks for writing in. It's hard to definitively say what the problem is without inspecting the car and doing some testing. The condensation and liquid was most likely coolant. If the hoses or the connections where they engage the...

Q: Throttle body failing - 2004 Honda Accord

Hello. This may be related to a variety of things such as a vacuum leak (high idle is caused by this many times), a faulty mass air flow sensor, a failing throttle body sensor. The fact that it wants to...

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...
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...
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...