Engine shakes only on first start of the day

1997 CHEVROLET S-10
211,985 MILES • 1.2L • 4 CYL • 2WD • AUTOMATIC
Avatar
MIZDAZEY
  • MEMBER
  • 1 POST
when I am going to start it up,it will shake then turn off,on third try it starts and then I have no more trouble. It happens only on first start to head out somewhere for the day. there is no engine light on rest of day as driving everything is fine.
Jul 19, 2021 at 10:09 AM
Advertisement
Avatar
SQM
  • ✓ASE Certified Mechanic
  • 6,383 POSTS
  • ASE Certified Mechanic
Hello,

Just to clarify, this only happens in the morning on a cold engine?
We can start with the basics. First of all you might need to do a tune up, if it has been a while.
It could be caused by a faulty sensor that does not provide accurate signal to the vehicle. It could be as simple as cleaning out few components like mass air flow sensor or throttle body.

Here are guides that will show how to clean these components:

https://www.2carpros.com/articles/throttle-actuator-service

https://www.2carpros.com/articles/mass-air-flow-service

Here is a guide to help you tune up your engine:

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Please let me know after you go thru the process and see how it drives.

Thank you.
Jul 19, 2021 at 10:17 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.