starts and runs then it shuts off after engine has warmed up

2005 CHEVROLET COBALT
115,000 MILES • 2.2L • 4 CYL • FWD • AUTOMATIC
Avatar
NICK RASCHELLA
  • MEMBER
  • 2 POSTS
A friend jumped my daughters car, it started and ran, then she noticed the fuel gauge was not working correctly and the speedometer was stuck on 70 mph. so we replaced the speedometer and fuel gauge all is good with that now. the car will start and run then shut off it seems like after getting hot it will start after sitting. we replaced crank sensor then coil tower and control module, still nothing. Any ideas out there that could help me where to go next? we are going to get another computer brain Friday and check to see if it does anything. we are showing no codes also.
Help please!
Nov 23, 2016 at 9:05 AM
Avatar
FREEMBA
  • ✓Experienced Mechanic
  • 1,152 POSTS
Have the fuel pressure checked. Get a technician (or yourself) to drive the car with the fuel gauge attached to see if the fuel pressure drops after the engine gets hot (after driving thirty minutes or so). If this is the case then the fuel pump is weak and failing after it runs and heats up for a while.
Nov 23, 2016 at 10:31 AM
Avatar
NICK RASCHELLA
  • MEMBER
  • 2 POSTS
Thanks so much we will try that we did just put a brand new AC Delco fuel pump in the car two weeks before this started.
Nov 24, 2016 at 7:24 AM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,554 POSTS
Hey Nick,

Please start the engine, then open the power distribution center under the hood and wiggle each one of the fuses and relays, We are looking for a bad connection that presents itself once it gets hot.

Please let us know what you find so it will help others.

Best, Ken
Nov 26, 2016 at 12:49 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