Intermittent engine cranks but does not start?

1999 MERCURY GRAND MARQUIS
153,000 MILES • 2WD • AUTOMATIC
Avatar
CRISSYKNNY
  • MEMBER
  • 1 POST
Last week my car decided not to start. It turns over strong just won’t start. First, we replaced the fuel pump, which didn’t work! Second, we replaced the relay switch, which works great for a day but once in a while it won’t start! What am I missing?
Nov 25, 2023 at 5:46 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,244 POSTS
Hi,

Which relay switch was replaced? Was it for the fuel pump? Also, if it is presently not starting, check to see if there is an ignition spark to the plugs.

Here is a link that explains how to do it:

https://www.2carpros.com/articles/how-to-check-for-ignition-spark

Let me know what you find.

Joe
Nov 25, 2023 at 2:02 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
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 new question

Frequently Asked Problems for This Vehicle