Why is my vehicle vibrating so much?

1998 MAZDA PROTEGE
239,631 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
Avatar
MALINA7
  • MEMBER
  • 22 POSTS
Like too much? When in park and drive but calms in neutral.
Oct 31, 2022 at 5:21 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

When it is in park, it should be the same as neutral. I just need to confirm there is a vibration in park. Also, is the check engine light staying on when the engine is running? If it is, then we likely have a misfire or other engine issue causing a rough idle.

When you drive the vehicle, is the vibration noticeable when the engine is under a load?

Let me know as much as you can.

Take care,

Joe
Oct 31, 2022 at 11:33 AM
Avatar
MALINA7
  • MEMBER
  • 22 POSTS
Okay. so, the idle is the same in park and in neutral. When I throw it in park though it feels as if it wants to shut off but doesn't. When it's in drive and I'm stopped the vibrations are bad. Yes, check the engine light is on.
Oct 31, 2022 at 5:51 PM
Avatar
JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

This can be caused by a few different things. First, it may need a tune-up. Also, things like engine vacuum leaks, fuel pressure-related issues, or even engine compression (239,000 miles) can cause it.

The easiest things to check for are vacuum leaks.

Here is a link that explains how to locate and repair one:

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

The other things will require a bit more time to check. So, what I suggest is to have the computer scanned for diagnostic trouble codes. Most parts stores will do it free of charge. I would recommend that regardless of what is found as far as vacuum leaks. That way, if there is a code, we will have a better understanding of the possible cause.

Let me know what you find.

Take care,

Joe
Nov 1, 2022 at 11:35 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.