1997 Bonneville won't start throws code po300..help

Lanie76
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Joined: Mon Apr 25, 2022 6:08 am

1997 Bonneville won't start throws code po300..help

Unread post by Lanie76 » Mon Apr 25, 2022 6:12 am

[image][/image]It be[image][/image]

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carriedi
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Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: 1997 Bonneville won't start throws code po300..help

Unread post by carriedi » Tue Apr 26, 2022 12:30 pm

(going off of the post's title because the body of the post just says 'image stuff but no image shows up)

P0300 is for misfires that aren't able to pin it to a particular cylinder. Usually not a reason for a no-start.

is that the only code stored?

If you can scan for engine codes, can you scan for other other codes? Can you see the data stream? can you see if you have an RPM signal while you are cranking the engine?

security light not showing a problem with the passlock system?

when you say won't start do you means the engine turns over but won't start of do you mean it doesn't crank over?

if it turns over but doesn't start you will need to check for spark, fuel (injector pulse and fuel pressure) and engine timing. (timing chain)

What tools and abilities do you have or another person to help you figure out what's going on with your vehicle? (Some parts of diagnosing your car will take more than just one person)

Let me know so we can go to a next step

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