Question about 1999 Chevrolet Silverado 1500
This year of Chevy truck had problems with burnt fuel pump connectors caused by defective fuel pumps drawing excessive current as they aged. What needs to be done here is to drop the fuel tank out and replace the fuel pump module inside the tank and replace the fuel pump harness connector at the tank connection, both parts are sold at a very good price by a company called "Airtex" as well as many other brands, I have found Airtex to be the best quality of the aftermarket fuel pumps, the factory part is over $350.00
Posted on Nov 09, 2010
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Posted on Jan 02, 2017
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Here are the most common causes of idle surge, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake
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