My Blazer is bucking and eventually stalling. However, it starts up right away again and then stalls a short time later but will start again right away. I had the gas line replaced but there was no fuel filter put back in the line. Could the injectors now be plugging due to junk in the line?

SOURCE: cannot get 1987 chevy van 20 to keep running... stalls out

Best do a fuel pressure test. Should have chg. fuel filter from the get go. The only other filter is on the end of the fuel pump in tank. Bad gas and dirty gas will plug up fuel filter, hense burn pump up.

SOURCE: I Have a 2002 blazer that starts but motor dies, surges when accelerating

If this engine is a VORTEC then you may have a problem with the internal fuel system. Under the top plenum there is a fuel reg and poppet valves that inject fuel into the cylinders. Sometimes the tubes that run fuel from the reg to the valves can leak and cause your problem. This cannot be found with pressure check because this occurrs after the reg. PS fuel mileage will go down. Let me know if this helps.Moe

SOURCE: wont keep idle, car stalls out

I had this same problem on my 2005 monte carlo, took mechanic a while to figure out it was the idle air control valve. They also replace the idle air control motor.

Jeff Barton

• 520 Answers
• Posted on Aug 15, 2009

SOURCE: 1992 Chevy S10 blazer 4wd (4.3 TBI engine code Z).

Replace ECM

Testimonial: "Thank you for your expert recommendation - right on the mark."

SOURCE: 1999 Chevrolet Cavalier, surging, stalling

Check the Alternator, Mine was doing something similar to it, was almost dieing constantly, at stops in drive, lights would flicker alot on bumps and up hills when rpm's would increase. Also yea mine also got worse after it warmed up, I replaced the alt. with a reman. but unless it was professionally rebuilt by a local electrical shop (which are kind of rare now a days) I would just get a new one from a local parts house, Also you pay for what you get. Do not have the shop get the part for you because they have anywhere from a 10%-25% mark up on local parts houses which is close or above what you would pay