1997 Chevy Astro Hard Start After Running

GMC
Avatar
MADMACS
  • MEMBER
  • 3 POSTS
i have a 1997 chevy astro awd with 146k,when cold starts right up,after run for an extended period,1 hour or more becomes hard to start.cranks for up to 15 seconds then starts,i noticed oil pressure gauge is at zero while cranking then shoots up to 60 lbs. and starts right up.fuel pump and filter was replaced [non oem] about a year ago.thanks joe mac.
Apr 4, 2006 at 5:44 AM
Advertisement
Avatar
LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
The fuel punp circuit goes through the oil pressure SW. Replace it and I think you problems will be over. It is located on the top rear back of the engine. Good luck
Apr 4, 2006 at 7:30 AM
Avatar
MADMACS
  • MEMBER
  • 3 POSTS
thanks,will try it,joe mac
Apr 5, 2006 at 5:33 AM
🔧 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.

Suggested Repair

Replace the oil pressure switch, which the fuel pump circuit passes through. It is located on the top rear of the engine.

Conversation Summary

The owner of a 1997 Chevy Astro AWD says it starts easily when cold but cranks for up to 15 seconds after running an hour or more. The oil pressure gauge stays at zero while cranking, then rises to about 60 psi as the engine starts. The fuel pump and filter were replaced about a year earlier. The expert says the fuel pump circuit runs through the oil pressure switch and recommends replacing the switch at the top rear of the engine. The owner agreed to try it.

Related Repair Questions

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