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1993 GMC 350 1500 V8 Truck will not accept gas and idle when cold
Have a 1993 GMC 350 V8 Truck that many mechanics have worked on. When it is cold and you crank the truck it will not idle and when you pull off from a stop sign it is very slow about receiving gas and pulls off very slow. Everything possible has been replace but it is still not fixed.
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Have you checked the Engine Coolant Temperature (ECT) Sensor, which affects fuel injector pulse width. The ECT Sensor is a temperature dependent resistor (thermistor), whose resistance decreases as the engine coolant temperature increases. It provides a richer mixture when cold, leaner mixture when hot. They become corroded, due to not changing the coolant frequently enough, flood the engine, and waste a tremendous amount of fuel. If the problem persists, I would replace the Ignition Control Module (ICM)--AutoZone Part No. DR140, $38.99. This could easily be the culprit. |
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