1995 Chevy S-10 "choking" at 2300-2500 RPM and c

DALE_1011990

MEMBER
1995 CHEVROLET S-10
6 CYL
4WD
AUTOMATIC
133,865 MILES

Hello, my 1995 chevorlet s10 blazer "chokes" itself at 2300-2500 rpms and will kill itself. When it dies, it will crank over, but wont start without starting fluid. I have replaced the fuel pump, filter, and both relays. Scaned the computer (obd2) and it wont throw any codes. The heated o2 bank 1 sensor 1 was faulty, is it was replaced as well. All sensors test fine. (Tps, map, ect.) I have fuel pressure all the way up to the fuel rail. I dont know where else to start. The spark is fine as well. I had a cold air intake on it as well, but replaced the air box and no luck. Any advice? It would be greatly appreciated.

1 Reply

KHLOW2008

MECHANIC
41,814 POSTS

Hi dale_1011990,

Thank you for the donation.

Symptoms indicates it is a fault with the injector or its controlling circuits.

Unplug the injector wire couplers and test for battery voltage with ignition switch turned ON. At least one of the terminals of the coupler must have battery voltage with igntion turned ON.

If battery voltage is available, attach a noid light across the terminal and crank engie. If the noid light pulses, the circuit is good.

To check the injectors, apply battery voltage in series across the terminals by tapping the terminal and if it click, the injector is working.