Misfiring when cold after installing a new alternator?

MURPHY963

MEMBER
2005 DAIHATSU TERIOS
1.3L
4 CYL
2WD
AUTOMATIC
100,000 MILES

I installed a new alternator after the bearings went bad. The car worked fine. The next day when the car was cold, it lacked power until it was running at normal temperature again. During normal temperatures the car does not misfire, but it does when cold. What could be the problem?

Thanks

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

Please understand, this vehicle isn't offered in the US, so I don't have the specifics or manuals. However, I will try my best to help.

Have you checked for engine vacuum leaks? That can cause a rough idle and stalling.

Here is a link that explains how to check:

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

Also, take a look at this link. You may find it helpful.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Let me know.

Joe

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Thursday, August 10th, 2023 AT 8:36 PM

MURPHY963