Has trouble starting and when started has no power when driving

Hi,

Have you checked to see if there are diagnostic trouble codes? Here is a quick video showing how it's done:

https://youtu.be/YV3TRZwer8k

I realize most people don't own a scanner, but most parts stores will do it free of charge or lend/rent a scanner to you. If the check engine light is staying on with the engine running, have this done.

Next, are there any other symptoms? For example any sounds or something noticeable other than the power loss? If not, then I would suggest checking a couple things.

The first thing I check when there is a power loss is for a plugged catalytic converter or restriction in the exhaust. Take a look through these links:

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://www.2carpros.com/articles/catalytic-converter-replacement

If there are no restrictions, check to see if there are an engine vacuum leaks.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

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One other thing, when you say it loses power, is there any misfiring from the engine, backfiring, black or white smoke from the exhaust, or anything you can think of that may help me diagnose the issue?

Let me know.
Joe

You are very welcome. Let me know if I can help and what you find. Once we do some checking, it should point us in the right direction.

Take care and have a good weekend.

Joe

If you look at pic 1, it shows possible causes for a P0383.

I read through several repair / pinpoint checks for you and the first thing that is suggested is to check the cam timing. That means checking the timing.

Before we jump the gun, is the engine oil clean and full? Has it been serviced on a regular basis or does is it possible that it could be sludged up inside? This could be a low oil pressure related issue, that's why I ask.

Let me know. Also, as far as testing the catalytic converters, yes to removal of the O2 sensor. It has to be one before the converter. I tell people that all the time. Here is a link that shows in general how to test one, but I believe it recommends removal. Keep in mind, the O2 sensor will only allow a small amount of air to exit, so it won't be perfect. However, if the converter is the issue, you should notice a difference.

Joe

Hi,

Here is a list of possible causes. Let me know if you have checked any of them.

Cam timing improperly set
VCT solenoid valve stuck open
Camshaft advance mechanism stuck

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Let me know.
Joe

Hi,

I need to confirm if you have a 2.0L or 2.5L 4 cylinder. They are different.