Car runs great with no problems to temps of 25 degrees farenheit. anything less begins to stall and rpms eratic. Let sit for five minutes and usually starts and will run. Or if real cold will drive for 3 to 4 miles and just stall. Won't start. Has done this from the time I bought car new in 2007.
Is the air filter clean?
SOURCE: '99 chevy Silverado Z71,5.3 engine.....will not rev when hot.....
try replacing your EGR Valve, or your Oxygen Sensor
SOURCE: 1988 chev celebrity stalls when comming to a stop sign.
no timing belt on the particular vehicle. but yes probably something minor, check fuel pressure, fuel pressure regulator, MAF sensor and IAC motor. all these can cause intermitent stalls. The MAF is located somewhere between the air filter and the throttle body. it is a sensor that sometimes gets dirty with air particles and will affect fuel managment. the IAC motor is on the throttle body and if gets stuck with carbon will not be able to control idle. the fuel pressure regulator is on the fuel rail and if the vacuum line is filled with gas then the diaphram is bad. and the fuel pressure should be 35 to 50 PSI running.
SOURCE: I have a 572 crate motor 620hp. Car runs great on
A little secret i found was first setting the timing with the car in gear with the idle screw backed out once i had it set to where the car idled great i would then turn the idle screw in till it barely touched Hope this helps you [email protected]
Testimonial: "Thanks will give it a try "
SOURCE: suburban stalls while driving
a bad crank sensor can cause this. shuts off while going down road, and will start about 10 min, later with no problems runs fine until it quits again. hope this helps,
SOURCE: engine temp gage spikes to 260 degree when
are you sure the cooling fans are working?
Is the coolant temp gauge telling the truth?
have you lifted the hood and heard the coolant bubbling into the overflow?
Or heard the tinging sound of a red hot engine?
If he did a liquid test with the dye,and it changed colors it should have changed very fast,
Another thing to think about if he was to take the fan belt off,and pull the thermostat housing off,and removed the thermostat,Now pour coolant into the thermostat hole to almost the top,Now start the car and see which side the bubbles come from,left or right,that will be the gasket that is leaking not both.
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