Question about 1995 GMC Yukon
My yukon will stall when I stop at a red light. Not at first, but when I give it some gas. It also wants to stall when merging on to the interstate. It usually only does it for the first 5 or 10 minutes of driving, after that it doesn't happen. It almost seems like it's out of gas, but it isn't. Also, when I am driving at a higher rate of speed it doesn't happen, I think because it's under more pressure. I have changed the spark plugs, rotor, distributor cap, and wires. I have also replaced the fuel filter and ran some gas treatment through it. Nothing seems to work, and mechanic shops want to try this and that without actually fixing the problem. Any help would be greatly appreciated.
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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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