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rpmdiag, Tech and Instructor
Category: Mitsubishi
Satisfied Customers: 7749
Experience:  Since 1975
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2001 Mitsubishi Galant starts then stalls after about 3

Customer Question

2001 Mitsubishi Galant starts then stalls after about 3 seconds. Replaced the Cam Position Sensor, Cleaned the MAS, IAC valve, and sprayed out the throttle body. Starts up and appears the system shuts the gas off and sounds/acts to me like a air problem. Can't find a leak anywhere and sprayed carb cleaner everywhere around the throttle and intake while someone it as running (someone inside kept starting it up) and that didn't seem to make any impact.
Submitted: 12 months ago.
Category: Mitsubishi
Expert:  rpmdiag replied 12 months ago.

Hi, welcome to Just Answer. I’m Ron and I’ll be helping you today.
Before we get started though, Please understand that I don't know
your skill level or tools you have to assist us. Also understand that
I can't see, smell, hear, or touch the vehicle either, so patience is
appreciated. JA is a great Q/A site, but it does NOT replace a
repair shop.
My goal is to make you happy and get a great rating in return for
my time. Sometimes I have to give you bad news that I know you
didn’t want to hear, so please don’t shoot the messenger.

Check the fuel pressure with a gauge and check for spark at the plugs with a spark tester. let me know your results.

Thanks, Ron

Customer: replied 12 months ago.
Sorry Ron don't have those tools. It fires right up and runs for a few seconds so assuming the spark and fuel is good would the Mass Air Flow Sensor create this reaction?
Expert:  rpmdiag replied 12 months ago.

rarely,but you can easily get these tools form the parts store,they will loan them to you for just a deposit. You can even get a code reader too to check for codes.

Thanks again, and please don't forget to rate me and keep this link in case you need me again later on.


Customer: replied 12 months ago.
OK Later today I'll get back to you
Expert:  rpmdiag replied 12 months ago.

Great, thanks,


Customer: replied 12 months ago.
Spark and fuel checks out fine. As long as I hold the starter on it continues to run.
Expert:  rpmdiag replied 12 months ago.

This sounds like a security issue then where it turns off the injectors. Check for power to injectors with a NOID light.'Ron