BLAZER STARTS SOMETIMES

CHEVROLET BLAZER
Avatar
1FUN37
  • MEMBER
  • 1 POST
1995 BLAZER 4 DR V-6 WITH 140,000 MILES IT WILL START UP & RUN FOR A FEW SECONDS, THEN START TO SURGE UP AND DOWN, THEN DIE.
THE FUEL PUMP AND FILTER WAS REPLACED, FUEL PRESSURE IS 58-60# WITH GAUGE AT TEST PORT. IF IT SETS FOR SEVERAL HOURS THE FUEL PRESSURE BLEEDS OFF TO 0. iS THIS NORMAL?
YOU CAN SPRAY CARB CLEANER INTO THE THROTTLE BODY AND IT WILL START AND RUN. AFTER A FEW TIMES IT STAYS RUNNING AND OPERATES OK. THE NEXT DAY IT MAY OR MAY NOT RUN OK.
Nov 14, 2007 at 10:07 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Test the fuel pump relay and fuel pump/oil pressure sending unit. The computer energizes the relay for 2 secs. then when it fires up the fuel pump/oil pressure sending unit powers up the pump.

You need repair manual for your year/make/model see link below

https://www.2carpros.com/kpages/auto_repair_manuals.htm
Nov 14, 2007 at 10:26 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.
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