Question about 1991 Chevrolet S-10 Blazer
A friend of mine with this model says the EGR valve is prone to carbon clogging. This can cause rough running and stalling. His fix was to remove the valve, scrape out the grosser carbon deposits, soak it in carburetor cleaner and get the rest of it clean, then replace the EGR gasket with an aftermarket product that has a screen to keep the junk out.
Other things to check are the vacuum hoses and fittings, the fuel injectors, spark plugs and cables to make sure it's firing on all cylinders.
Do you get a "Check Engine" light? If so, go to a car parts store and ask them to read out the error code for you. This will help narrow down the problem. There are several sensor problems that could contribute to rough running or stalling under load, especially in "closed loop" mode (the engine runs "open loop" until it warms up).
Posted on Dec 30, 2010
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Posted on Jan 02, 2017
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