Question about 2001 GMC Denali
1- get a can of mass air flow sensor cleaning solution and spray it on the sensor. The sensor is in line right after the air filter. It is in the tube that is directly connected to the box the air filter is in. You can see a wire connector going to it. Easy to open up, look inside and you will see some thin wires going across with a few nodes on them. Spray these clean. re-assemble.
2- get some fuel injector cleaner and remove the tube where it goes onto the manifold.Same tube air sensor is in, except at other end. Spray some cleaner in and run the engine. I am not a pro and I get scared there will be a fire so I reassemble the entire tube after spraying and before turning on the engine. I repeat it a few times.
#1 helps the most and you will be sooooo surprised how inexpensively you solved a seemingly major engine problem. I had the same thing when turning in a parking lot, slow turning. Problem gone in 10 minutes work!!!
Posted on Oct 13, 2008
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Posted on Jan 02, 2017
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