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99 Alero service engine light flashing

05-06-2010, 07:44 AM
I have a 1999 Olds Alero, 3.4L V6. Currently the service engine soon light flashes while I drive, I have had the codes checked and they are a P0440, P0302. The car runs just terribly; it doesn't seem to want to shift, it is turning more than 2000 rpms at ~55mph (used to turn ~1800 rpms at the same speed), it will BARELY pull itself up hills. Any suggestions besides setting it on fire?!?

05-06-2010, 09:54 AM
I looked up both codes for you, and I think that the first one, P0440 might just be a loose cap after filling up your tank? I have had the same problem, and when I retighten it, it will go off in a couple days. I looked the other code up however, and it says that one of the engine's cylinders are not firing is the link to where I found it. Hope that helps.

05-06-2010, 09:55 AM
There is also a few different solutions to that last code, so read the link. =)

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