1994 Chevy S-10 Engine running strange

MICHAELROBBINS

MEMBER
1994 CHEVROLET S-10

Engine Mechanical problem
1994 Chevy S-10 6 cyl Two Wheel Drive Automatic

My truck has been running great previously and then this morning while starting it for the first time today, I heard a loud "pop" under the hood, much like a pressure hose of some type popping off it's fitting. After that, the engine started and immediately went to a smooth, but high RPM in neutral for 15 seconds, then a gradual drop to normal idle but very rough for a few moments then it died. I have tried starting it several times with the same resulting sequence of events. I checked all gauges while running (temp/amps/oil press etc.) All normal.

What do you think? Thanks!

Michael

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Try cleaning out the idle air control valve and check the coolant temperature sensor

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Sunday, May 24th, 2009 AT 6:19 PM

MICHAELROBBINS

MEMBER
2 POSTS

I DISCONNECTED THE ENTIRE AIR INTAKE ASSEMBLY INCLUDING TWO ELECTRICAL SENSOR CONNECTIONS AND OTHER THAN RUNNING A LITTLE HIGH RPM AT IDLE, RUNS GOOD NOW. I THEN REPLACED ASSEMBLY WITH CONNECTION, PROBLEM COMES BACK. I THEN ONLY DISCONNECTED THE TWO SENSORS AND IT RUNS GOOD AGAIN, EXCEPT HIGH IDLE. WILL RUNNING MY TRUCK THIS WAY HURT ANYTHING UNTIL I CAN GET TO A MECHANIC?